Lighting system for intensification of facility visual appearance and intensification method

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. A lighting system for the intensification of the facility visual appearance comprises a lighting unit (5) in order to ensure intensifying lighting and a light register (1) intended for the registration of light reflection by the lighted facility. Reference lighting is mixed up (8) with intensifying lighting. Data on reflected light is filtered (9) in order to filter reflection data (1) from reference lighting. These data are used for the computation of intensified lighting in a processing unit (3).

EFFECT: high efficiency of the lighting system.

13 cl, 17 dwg

 

The technical field TO WHICH the INVENTION RELATES

The invention relates to a lighting system containing the device registration light to generate registered image data of the object, a lighting device and a processor for forming a data amplifying light from registered image data, and the data amplifying lighting provide a lighting device for illumination of the object enhancing lighting to enhance the appearance of the object.

The LEVEL of TECHNOLOGY

Publication WO 98/2683 discloses a device for projecting an image of an object. The projected image of the object overlaps the object so that the observer of the growing object perceives the bright parts brighter and dark elements remain the same. The device has a light source which illuminates the object, the means of creating a video that creates a video signal representing the image of the object, and a video projector that receives a video signal from a means of developing a video, and projects a visual image of the object. The filter prevents the light from the video projector from entering the means of creating a video, causing the elimination of positive feedback.

Lighting systems are becoming more complex. We are witnessing the development of ICU�eat lighting, moreover, the brightness and/or color of the light steel adaptable.

The system, which is described in the opening paragraph is known from the article "Real World Dynamic Appearance enhancement with Procam Feedback" authored by Toshiyuki Amano and Hirokazu Kato, seminar Procams 2008, Marina del Rey, California, August 10, 2008 This known system includes a camera to provide feedback from the illuminated scene. This feedback could be used to emphasize certain objects or scenes in the interior, as well as to perform the image enhancement of artwork, such as paintings. The system enhances the realism and provides a more clear and sharp image. Under the idea of the invention, the object is covered by any object. Examples of such objects are the exposure image, paintings, people, trees, alone or in a group, as a whole or part of a person, tree, etc.

The main problem of the lighting system to enhance the realism is to obtain sustainable results. The feedback loop between device reception of light and lighting device leads to an unstable system. To facilitate understanding, and not as a limitation, the data recorder further light will sometimes also be called a camera, and a lighting device with a projector.

The image projected by the projector onto the object �smenet the appearance of the object, which is visible by the camera, which leads to a further increase in the following projected image on the object, which leads to a further enhancement of the appearance of the object that is visible through the camera, etc. This can lead to the effect of rapid growth, in which the degree of amplification continues to grow.

Amano, suggest a solution, which they call "partial feedback". The gain of feedback is greatly reduced. The decrease of the gain of the feedback inhibits the effect of rapid growth. Although this undoubtedly leads to a fairly stable system for static scenes, this adds a significant delay of the system gain, which makes the system less suitable for dynamic scenes (operating headlights, etc.). Also known nervous system responds to changes in the General illumination due to moving objects in the environment and has trouble with boundaries of objects in the image.

Disclosure of the INVENTION

The task of the invention is to provide a lighting system and method of lighting, which reduced one or more of the aforementioned problems.

According to the first aspect of the proposed lighting system containing:

- processor to generate the data (4) enhancing lighting to enhance the appearance of the object;

- a means pornog� signal to provide reference data of light,

a mixer for mixing the reference data lighting data and amplifying light,

- General lighting device for illuminating the object with a mixture of the reference light and amplifying light,

device registration light to generate registered image data of the object, and

- a filter for selection of data from the registered image data of the reference image of the reflected object generated by using the reference light, as reflected from the object data and the reference image of the reflected object are input into the processor for forming a data amplifying lighting.

According to the second aspect of the invention a method of illuminating an object, in which:

- ensure mixing data of the reference light and amplifying data of lighting for General lighting device for illuminating the object with a mixture of the reference light and amplifying light,

- register the object image to generate registered image data of the object;

- filtered data of the registered image of the object to allocate data of the reference image of the reflected object generated by using the reference light, as reflected from the object

moreover, the data of the reference image of the reflected object used�t to form a data amplifying lighting.

It is very important that the lighting system can distinguish the original scene, i.e. the object under reference lighting without the feedback loop, from the scene with enhanced illumination when the object is illuminated by amplifying light. Information about the object under the reference illumination is used to provide amplifying lighting.

The lighting of the object reference mixture of lighting and enhancing lighting in combination with filtering of reflection of the reflected reference light due to lighting and the use of data reference light to form an amplifying lighting eliminates the effects of rapid growth in the feedback loop. Light amplifying is based on data for the lighting of the object.

The lighting system includes a reference signal to provide data to support lighting and a mixer for mixing the reference data lighting data amplifying light, and a mixture of reference data coverage and data enhancing lighting provides General lighting device. The use of a common lighting device for forming a supporting and reinforcing illumination reduces the complexity of the system. The system comprises a filter for filtering data of a reference image of the reflected object from the data of the registered image, preach�m data of the reference image of the reflected object are input into the processor for forming a data amplifying lighting.

In all embodiments, it is possible to avoid or at least to curb the effects of rapid growth in the feedback loop, still having the ability to enhance lighting, which is of particular importance in dynamic scenes. Under the idea of the invention, the mix contains all the methods for mixing signals in the electric field, i.e. by mixing the electrical signals before they are sent to a General lighting device. Such methods of mixing include temporal and spatial modulation, the addition of alternating signals, and time multiplexing of signals. These methods allow the filter to apply to the registrant, whether it is a filter based on a time period temporal frequency or spatial frequency, in electrical or electronic field to filter the reference light from a mixture of supporting and enhancing lighting.

In an embodiment of the mixer comprises a multiplexer for TDM reinforcing illumination with the reference illumination and the filter includes a demultiplexer for temporary demultiplexing data of the registered image.

Demultiplexing is equivalent to applying a temporal filter to the data of the registered image. For some lying�nnyh intervals of the recorded data correspond to the reference illumination of the object, and for other time intervals - enhancing lighting.

Alternatively, the mixer comprises a modulator for modulating and amplifying light in the time domain with the reference illumination and the filter contains a time demodulator for temporal demodulation data of the registered image to provide data to the reference image of the reflected object. This allows you to control the lighting of the object, for example, the difference between odd and even frames if modulation is performed by addition and subtraction of the control data from odd and even frames, respectively, or Vice versa. Temporal demodulation is a form of filtering.

In another implementation, the mixer comprises a modulator for spatially modulating and amplifying illumination with the reference illumination and the filter includes a demodulator for spatial demodulation image emphatic scenes to provide data to the reference image of the reflected object.

Spatial demodulation is a form of filtering.

The reference light is preferably uniform illumination.

The projection image can be done in a manner that simultaneously projected the full image, or a scanning method in which pixels deploy or deploy line image�.

You can also combine the variants of the implementation.

In preferred embodiments, the illumination system being configured to permit alignment dependent on the lighting object with the object.

Although the use of the reference-light treatment eliminates the problem of fluctuations due to the effect of rapid growth in the feedback loop, completely uniform reference lighting also achieves success in the circumstances, and it is impossible to find a match between the pixels of the projected image and the pixels of the registered image. In other words, it is difficult to combine the pixels of the light and the pixels of the registered image. By performing the lighting system with the ability to match this limitation is eliminated.

In embodiments, the common optical system is used for the lighting device and the recording device. The use of a common optical system reduces the risk of a mismatch.

In preferred embodiments, in the reference light are spatially markers, and one or more images are recorded, and the image is analyzed to find the spatial markers. The inclusion of spatial markers in the reference illumination is possible to analyze the corresponding�s between the pixels and lighting of the registered image, what can be used to align the projection with the object.

Spatially modulated structure can be used to provide markers matches for reception of the coincidence of light, recording light amplifying.

In the alternative, the pixels of the lighting device can be supplied with a distinctive signal.

In the alternative, the pixels of the lighting device can be made to emit light that is invisible to the human eye, but detectable by the device registration light.

Some of the pixels can be made to emit infrared light. This light would be invisible to the human eye, but would be visible to the camera if the camera has the ability to detect infrared radiation. This ensures alignment of the light with the object.

The higher the density of the markers match, the better can be performed combination.

In embodiments, the system includes one recording device and several lighting devices, and the reference light from the lighting devices are visible.

In such embodiments, one recording device can be used to control the illumination of more than one object or lighting different sides of the same object.

In preferred embodiments of�of westline mixture of the reference light and amplifying the light is like this, average full coverage almost equal to the average enhancing lighting. In such embodiments, the average of the reference light is practically zero. The average may be based on time or on the image. This reduces the visibility of the reference light to the human eye.

BRIEF description of the DRAWINGS

These and additional features of the invention will be explained more in the way of example and with reference to the attached drawings, in which

Fig. 1 illustrates a lighting system;

Fig. 2 illustrates a known lighting system;

Fig. 3 illustrates a variant implementation of the lighting system in accordance with the invention;

Fig. 4 and 5 illustrate a variant implementation of the lighting system in accordance with the invention;

Fig. 6 illustrates an implementation option using the temporal modulation;

Fig. 7 schematically illustrates the signals in the odd frame and the even-numbered frames using the temporal modulation;

Fig. 8 illustrates the advantage of using two-dimensional spatial structure;

Fig. 9 schematically illustrates an implementation option, in which the image is created by scanning;

Fig. 10 illustrates an implementation option, in which the recording device and a lighting device share a common optical�th system;

Fig. 11 illustrates an additional preferred variant implementation;

Fig. 12 and 13 illustrate an implementation option, in which the system contains more than one lighting device;

Fig. 14 and 15 illustrate an implementation option, in which spatial modulation is used;

Fig. 16 illustrates an implementation option, in which the device registration light contains a certain amount of photosensors.

Figures are not shown to scale. Generally, in the figures the same components are denoted by the same numbers of links.

The IMPLEMENTATION of the INVENTION

Fig. 1 shows a lighting system. The lighting system comprises a light reception, in this example, the camera 1 for capturing a reflected image of the object. In this example, the object is the image of the mountain. The recorded signal 2 is sent to the processor 3. The CPU 3 generates signal 4 for controlling the amplifying device 5 lighting. This lighting device allows for projecting an image on the object. Lighting device 5 displays the image of the painting on the picture. Thus it is possible to stress (increase) the image of the painting. The imposition of the original pattern and the projected pattern enhances the contrast and range images. The light spots you can do lighter in appearance.

Fig. 2 illustrates a system known from Amano et Correction curve of the gamma distribution γ is introduced in the sequence. The figure does not show that the gain of the feedback G is also entered in the system. The gain of the feedback is selected to improve the speed of convergence of the feedback loop and avoid exceeding the power output. The line on the right side of the figure very schematically illustrates the shape of the surface, the light which is emitted and on which the projected light. Although not shown in the figures, the use of the correction curve of the gamma distribution can also be used in one or more or in any of the embodiments of the invention.

This known system is expected to lead to a fairly stable system for static scenes. However, it introduces significant latency in the system gain, which makes the system less suitable for dynamic scenes (operating headlights, etc.). The specified response time is 0.44 seconds. The system also saw the author of the invention, nervously responds to changes in the General illumination due to moving objects in the environment and has trouble with boundaries of objects in the object. Even small fluctuations lead to jitters about the boundaries of the object.

Fig. 3 illustrates a system in accordance with the op� of the invention.

To the signal gain 4 containing the data amplifying lighting, added a reference signal 7, containing the data of the reference light. The system comprises a generator 6 and a reference signal to generate this reference signal 7. The mixer 8 mixes this reference signal with the signal gain 4. The mixed signal is injected into the projector 5 and the image is projected. The image, taken by camera 1, respectively is the result of mixing two signals, the amplification signal 4 and the reference signal 7 generated by the generator 6 and a reference signal, i.e. the lighting of the object is a mixture of the reference light and amplifies light. The system comprises a filter 9 for filtering the video data 10, due to the reference signal 7 because of the reflection of the reference light object. This signal containing video data 10 is entered into the processor 3.

The inventor realized that the feedback loop between the camera and the projector leads to an unstable system, since the projector changes the appearance of the object visible by the camera, leading to another increase following the projected image on the object, etc. the Gain in the feedback loop can cause oscillation in the coverage, leading to an unstable situation.

In an embodiment, from Fig. 3, the projector is used for the formation of�ornago lighting, for example, uniform illumination with white light. Signal to generate the reference light is generated by the generator 6 and a reference signal and is mixed with the signal to create amplifying the light coming from the CPU 3. By filtering the response to the reference light from the signal received by the camera, the result is a sustainable situation. The signal 10 of the reference image of the reflected object is used to signal 4 gain. Since the signal 10 of the reference image of the reflected object is known and stable signal, the oscillations are absent or at least greatly reduced.

One embodiment of the mixing is illustrated in Fig. 4 and 5. In this embodiment of the signal after the mixer 7 multiplexed in time. A relatively short period of time is assigned to the reference light, whereas in the remaining time of the amplification signal 4 is sent to the projector 5. The mixer comprises a multiplexer MUX, and the filter in the receiving part of the system contains the corresponding demultiplexer DEMUX.

In the camera image also builds up in time intervals, and there is a time interval that corresponds to the reference light. Signal 4' image, which is taken by the camera 4 corresponds to the signal amplifiers; signal 7 corresponds with reference�gnlu 7. 7 is a signal time interval, which is used in the processor 3. This figure is a schematically illustrated step-by-line. Part of the signal corresponding to the signal 4 the gain is multiplied by zero, the portion corresponding to the reference signal 7, by a factor of 1. This means a temporary signal demultiplexing registered image on the side of the camera. It is noted that the camera also takes the image originating from the signal amplification, and using more complex temporal demultiplexing the signal also can be separated. In embodiments, the signal amplification can also be sent and analyzed by the processor 3, for example, to fine tune or verify the results of image enhancement. In this embodiment, the implementation of one time interval temporal multiplexing is used for a reference signal, the remaining part is used for signal amplification.

Fig. 6 illustrates another embodiment of the invention. In this embodiment, the implementation of the gain is modulated in the time domain by adding/subtracting a reference signal to odd-numbered/even-numbered images. Even image then show the image caused by a signal formed as a signal gain 4 + reference signal 7, whereas nötsch�tnye images show the image caused by a signal formed as a signal 4 gain - reference signal 7.

This is shown schematically in Fig. 6. The mixer 8 adds and subtracts from the signal gain 4 respectively to odd and even frames of reference signal 7 representing the even lighting. The filter 9 in this variant implementation contains a time delay 11 and the subtraction unit 12. In block 12 subtracting the two signals are subtracted subsequent frames. One of the image signals is formed as the signal gain 4 plus reference signal 7, the other image signal as a signal amplification minus reference signal 7, or only the signal gain.

Subtraction of two signals of odd and even frames makes to fall the signal gain 4, leaving only the reference signal 7, or, more precisely, a doubled reference signal 7. It is noted that the difference signal actually provides two values, namely plus or minus twice the reference signal, whichever is deducted if the odd from the even or odd and even frames. The absolute value of the difference signal can be fed into the processor 3. The subtraction unit has a function of temporal demodulation data of the registered image, to provide data of the reference image of the reflected object. Generalizing the scheme of Fig. 6, the circuit comprises a modulator in which the signal gain is modulated by �straps with a reference signal. On the recording side of the temporary demodulator is applied for the temporal demodulation of the recorded signal, providing a control signal of the image, i.e. the image is due to a known reference light. This reference signal 10 is then used in the processor 3.

In more complex embodiments, the motion compensation can be applied to compensate for the temporary movement of parts of the image between odd and even frames.

It is noted that the image signal due solely to the 4 gain can be obtained by adding odd and even frames. This reflected from the object signal amplification can also be sent to the processor 3 for further analysis.

In both embodiments of Fig. 4 and 5 generates a control signal 10 of the image, and this signal is sent to the processor 3 to provide signal gain 4.

The advantage of the embodiment of figs. 6, in which the reference signal is alternately added and subtracted, is that the average intensity and color of little or no change. Preferably, the reference light was only a small part of amplifying light. In embodiments in which signal amplification is alternately added and subtracted the reference signal, the signal gain will have to m�minimum value, equal to the control value. Option would be not to add in the odd frames of the reference signal and the even-numbered frames to add reference signal. That would remove restrictions on the minimum value in the signal amplification. However, this would affect the average intensity and color.

A slightly more complex system includes means for superimposing on the signal gain for a frame structure with spatially alternating areas of positive and negative sign, and with a negative and a positive sign for the subsequent frame. An example of this structure is a staggered structure. This will reduce the visibility of adding a reference signal to the signal amplification. Visibility may be further reduced by shifting the position of the structures in time or by using different structures sequentially. Can also be used the honeycomb structure or any other recurring structure. In a simple embodiment of the neighbouring pixels of the lighting device to form a staggered structure.

By subtracting successive image signals, the signal gain falls again, leaving only the reference signal.

The use of patterns, such as checkerboard patterns, has an additional advantage in that the influence of a pixel of the projected image is traced on registered�created the image. The use of the system in which the reference illumination is a simple uniform lighting throughout the projector does not allow tracking of correspondence between pixels in the projected image and in the image, the visible recording device. Then the problem of overlap between the projected image and the registered images cannot be tracked and corrected. The use of patterns, such as checkerboard patterns, enables alignment of the projected image on the image.

Any type of marker matches can be used for this purpose, however, the spatial structure projected in the reference signal is a useful and simple means to accomplish this, because the structure offers a number of markers at known relative positions.

Another option of providing markers in the reference signal could cause some of the pixels to emit light that is invisible to the human eye, but detectable by the camera, such as infrared or ultraviolet.

Fig. 7 schematically illustrates the signal in the odd frame, which is a model structure chess plus 4 signal amplification, and in the even frame (or Vice versa), which is the negative value of the reference signal, the odd frame plus 4 signal amplification. Subtraction of the two signal�, as schematically shown in Fig. 5, will provide the reference signal. This signal can then be sent to the processor 3. Fig. 7 schematically illustrates that the intensity is modulated using checkerboard patterns. The absolute value of the difference of the two signals provides a control signal of the image.

In preferred embodiments, it is possible to decrease/increase some color (e.g., green), increasing/reducing the other colors (e.g. blue and red) in the reference structures of the odd/even frames. The increase can be selected so that the brightness does not change throughout the frame, while color variations are balanced by some number of frames.

People are less sensitive to changes in color than to changes in brightness. Again, this implementation option can be used in any spatial structure, or even if no structure is not used for a reference signal, and may also be used in the variant of implementation with time multiplexing. A further reduction in visibility can be achieved by shifting the spatial structure. For example, you could use odd and even frame with the specified structure, and then to shift the structure of a half unit for the following pairs of odd and even frames. This would reduce the Luba� the visibility of the structures. However, this would also reduce possible measurement reference signal, since not all pairs of odd and even frames could then be used for such measurements.

Fig. 8 illustrates the advantage of using two-dimensional spatial patterns. The advantage of using structural modulation is that the structure can be used to register the image from the camera and the projected image. The observed (using the camera) of the projected structure usually will not look like a chess structure due to changes in depth to the projection plane and a possible different angle of the camera and projector. Using techniques of motion estimation, it is possible to set the bias and deform the image of the camera to combine the projection from the projector to the object on which the image is projected. The markers in the image, which in this case are formed by the boundaries between the areas of the spatial structure, provide such a fit. As explained above, the difference signal will provide a staggered structure with twice the amplitude of the reference signal, and this will give the opportunity to distinguish the boundaries between regions and thereby to ensure a match. More advanced alignment possible through the provision of more complex structures,such as four structures, moreover, the amount of structures is equal to the illuminance. It might require a bit more of a long series of structures, but enables more advanced alignment.

Implementation options above illustrate the temporal multiplexing or combining of the signals.

The invention is not limited to these examples.

A mixture of the two above embodiments is, for example, the following schema, which is also included in the invention, and temporal multiplexing is used in a slightly different pattern:

in the first time interval or a certain number of time intervals is emitted only signal amplification and

in the second time interval or a certain number of time intervals is radiated signal amplification plus reference signal.

Two time interval equal in length to the integral intensity of the signal amplification was the same, and/or recorded signals are multiplied so that the integral intensity of the signal amplification was the same. On the registrant signals demultiplexed and deducted from each other, leaving only the reference signal. If two time intervals are not equal, for example, the period of time t1for a first time interval and t2for the second time interval, the reference signal can�about getting by subtracting t 1/t2times of the second signal from the first signal.

The advantage of this embodiment in comparison with a variant implementation of Fig. 4 that would provide a stronger reference signal. The advantage compared with the subtraction of subsequent frames, as in Fig. 6, is that no time delay and no problem (or less) with the motion of objects in the image in an extended time frame. Two signals which are subtracted to originate from the same frame, respectively, there is no difference, which must be considered, or motion compensation.

Another example of TDM is the following:

in the first time interval with length t1a signal is emitted reference light derived from the control data,

in the second time interval with length t2emitted light amplifying minus t1/t2-multiple of the reference signal lighting. This can be achieved by providing a lighting device within this time interval, the data equivalent to the data of the light t1/t2-multiples of the control data.

Full coverage of the object is then equal to:

t1*(reference light) + t2*(light amplifying - t1/t2*(reference light)) = t2 *light amplifying

Reference lighting on average has no effect on the illumination of the object. The human eye, which is not able to track rapid fluctuations, does not see the reference illumination.

The invention can be used in several technical fields.

Application areas include, but are not limited to, such applications as interior lighting, lighting shop, lighting and operating headlights.

Bright colors, contrast and color enhance, for example, paintings, posters or figurines in the living room, a Museum or gallery. In General, every object in the interior can be emphasized with the invention, which can also be represented as low (green) because the light energy is not dissipated unintentional on the part of the scene. In embodiments, the system being configured to radiation of those colors, which are less absorbed in the location of the object, respectively, by increasing the efficiency of the lighting effect. In this case the target is an economical lighting, and visual reinforcement.

In the environment of the store increases the lighting can be used to increase the attractiveness or appeal of certain products. It is noted that can be used not only square areas, but the spots of illumination PR�arbitrary shapes. System in the embodiment of the implementation in the environment of the store can track the person when he/she goes in the direction of the display, and accordingly to adjust the projected image.

In operating light amplifying can be used to improve vision surgeon.

In a car headlamp in embodiments, the mosaic light source with feedback on the camera uses to improve vision of the driver in bad weather conditions. In such conditions, stable increased lighting is essential. Lights then illuminate, for example, objects such as trees or road signs on the roadside.

Another application is possible in theaters and musical performances. The object that you want to highlight is the singer or the actor who moves on stage. In such applications, the signal gain 4, meaning that the algorithm, which is amplifying the lighting should not be immutable, and should have a dependency, for example, from time to time, the provisions on the stage or musical piece that is performed. Could also be used treatment for the allocation of an actor (generally, each of noteworthy object) and emission of light only to important areas of the scene (floodlight with adjustable spot or followspot).

Average values�e device can belong to different types if the device allows the projection of the image and light control. The projection should not have the same detail as the object itself. A rather coarse-grained projected image can act with the same success. If the lighting device has a very low resolution compared to the resolution of the observer, it can be advantageous, for example, optical blur amplifying the image. A lighting device may belong to the type that projects the image as a whole, for example, an LCD projector, or the type that projects images by scanning pixels or scan lines of the image.

Lighting device, in embodiments, includes a light modulator (LCD, DMD) for spatially modulating light from a light source.

Lighting device, in embodiments, contains a generator of scanning the modulated light beam (led or laser diode) for spatial modulation of light emitted to the object.

Lighting device, in embodiments, contains a scanning linear array of oscillators modulated light beam (LEDs or laser diodes) for spatial modulation of light emitted to the object.

The recording device may PR�to nantiat to one of many types; in embodiments, the recording device includes an imaging unit, such as CCD, CMOS. In another embodiment of the recording device comprises a photosensor, for example a photodiode, for detecting the amount of light reflected at some point of time from the scanned scene, or a linear array of photosensors for detecting the amount of light reflected at some point of time from the scanned scene.

Specific preferential variant implementation is formed by a projector containing a mosaic lamp. Lighting systems have become adaptable in terms of intensity, and, most recently, with the introduction of led lamps, also in the color indices. LED can be driven very quickly in terms of brightness and color, using mosaic lamps, which allow the projection of the image/atmosphere (low resolution). In mosaic lamps lamps consist of a large number of miniature lamps, such as LED and lamp projecting image.

Fig. 9 illustrates such an image. The image consists of a certain number of rows of pixels that are deployed sequentially, schematically indicated in Fig. 9 lines extending from left to right. For example, a laser device with a moving mirror can be used to form the image by constructing�Noah scan. Mosaic lamp that uses LED lighting, also could be used for this purpose. Alternatively, the image can show line by line, and lines are deployed in a top-down image.

When deployed the individual pixels of the projected image, the individual pixels are discernible in the registered image, which is an advantage for the purposes of alignment. The drawback is that most of the pixels at any time repaid.

Temporal multiplexing can be performed by pixel or scan line of the image signal gain to provide a reinforcing lighting with the subsequent scan of the same pixel or line by using a reference signal for providing a reference light and register the image in a separate time intervals to demultiplex the signals and extract the reference signal, i.e. reflecting the reference light to the object from the signal registered image.

Also you can use a temporary modulation of the signal gain of the reference signal, as schematically shown in Fig. 6, and extract the reference signal from the recorded signal by subtracting the recorded signals from different frames.

In the above figures, a lighting device 5 and the recording device 1 shown as separate blocks. In the pre�Occitania embodiment of the lighting device 5 and the recording device 1 share a common optical system. Fig. 10 schematically shows a variant of the implementation. The projected light through the mirror M1 and a partially reflecting, partially transmitting mirror M2 is transmitted through the common lens L. the Image is recorded through the same lens L and a partially transmitting mirror M2. The use of a common optical system has the advantage of more compact design and smaller problems concerning the convergence of the projected image and the registered image.

Fig. 11 illustrates an additional preferred variant implementation. In this embodiment, the implementation of three distinct signal

reference signal (7a, 7a')

signal amplification (4, 4)

the signal is not due to lighting devices and, for example, due to sunlight (7b, 7b').

In embodiments, the signal light is modulated by time-lapse with the reference signal, any signal from other light, such as incoming sunlight, will not (or only very limited) influence on the signal 10, as incoming sunlight will affect all the frames are almost equal extent, and accordingly at the time of subtracting the influence of the incoming solar light is lost. However, in a variant implementation with a time multiplexing of the additional light coming from a light mouth�STS, could be perceived as part of the control image. Thus, a bright spot in the picture because of the reflection of sunlight in the window, falling on the picture, will be seen as a part of the picture and will be underlined. For car headlights lighting due to street lighting or sunlight creates a similar problem. Fig. 11 illustrates an implementation option to overcome or at least reduce this problem. For TDM, there are at least three time intervals, one for the amplification signal 4, a single time interval 7a for reference signal 7a and the time interval 7b for the lack of signal at all, there is no light coming from the lighting device. The control signal of the image can then be found by subtracting the signals corresponding time slots 7a and 7b.

Alternative method that does not require additional time interval in the scheme of multiplexing is the modulation reference signal at time intervals of 7, for example, in odd-numbered frames is 0.8 times the reference signal and the even-numbered frames 1,2 and the reference signal, and then subtracting the odd from the even-numbered images or Vice versa. The signal due to sunlight then neutralized, leaving only 0.4 from the lighting due to the reference signal�.

Fig. 12 illustrates an implementation option, in which you use one recording device 1, but more than one (in this example, two) of the lighting device 5 and 5'. In this embodiment, the implementation of the two multiplexed reference signal, and, for example, time intervals for the lights to two lighting devices are different and preferably do not overlap.

The demultiplexer DEMUX is then able to analyze the recorded data and to separate the reference light both lighting devices. Preferably, in order to avoid difficulties, the signal gain of the lighting device 5 is set to zero to avoid interference between two control lights.

Fig. 13 schematically illustrates such a layout: a lighting device 5 sends a signal that is zero 0 during the first time interval, the signal gain 4 for an additional time interval and the reference signal 7 during the final time interval.

A lighting device 5' is sent a signal that contains control data 7' during the first time interval, the signal gain 4 for an additional time interval and zero during the final time interval.

The demultiplexer DEMUX then can distinguish the reference signal �of svedeniya from both lighting devices. The lighting device 5 and 5' will have to work synchronously to operate this variant implementation.

The use of a single recording device along with the use of two or more lighting devices has at least two advantages: it is more efficient and eliminates any problem with the synchronization of the two recording devices, compared with the use of two recording devices.

Of course, the number of lighting devices is not limited to two; you can use more than two lighting devices. When the reference light is performed on the structure, patterns for the two lighting devices are preferably different, to provide an additional distinction between the two.

Another variant implementation of the invention is schematically illustrated in Fig. 14.

The graph in the upper part of Fig. 14 illustrates light amplifying. The vertical axis specifies the intensity I. the Horizontal axis specifies the location of the x series or row of pixels. The reflected image will show a similar spatial structure.

The graph in the lower part of Fig. 14 shows the sum of amplifying light and reference light. In this example of the invention spatial light amplifying modulated on the reference light. When�'erom this spatial modulation is the addition and subtraction of a fixed value of the intensity gain in the neighboring pixels. Assuming that the light amplifying changes relatively slowly from pixel to pixel, it becomes possible, by applying a spatial filter to the data of the registered image, the spatial filter the reflection due to the reference light from the data of the registered image.

This is an example of a variant of implementation, which increases the spatial coverage is modulated with the reference light.

Fig. 15 illustrates a more complex example of the spatial modulation amplifying light with the reference light.

In this example, self supporting lighting also provides additional spatial structure. In this example, the value of the reference illumination shows two different lifting height. When the height difference is applied in two directions, there will be a staggered structure, equivalent to that shown in Fig. 7.

In the above examples of common lighting sources were used to provide supporting and enhancing lighting. Mixing of supporting and enhancing the lighting was carried out by mixing the data signals before sending mix signals data General to a lighting device. The combined light from one light source comprises at least two distinguishable components, alausi�Xia reference light and amplifying light. On the recording side of the system is the reverse process to that performed on the radiating side, demolishing the two component lighting or retrieves at least one of the components of lights, namely the reference light.

This idea can be generalized:

As a formula of the emitted light can be described as:

The I of the emitted light depending on the spatial position (x, y) and time t. The emitted light depends on the intensity of the reference light, which is a function of space (x, y) and/or time t, but also depends on enhancing lighting, which are also a function of space and/or time.

The reflected light from the object will also depend on the reflection object reference light and amplifying light:

The reflected image is filtered to obtain a reflected image by the reference light.

Data on indirect reference image due to the lighting used to provide information for enhancing lighting.

There are a number of methods of the invention.

Filtering on the receiving side are performed on the recorded (registered) data, since it also facilitates and�Aliz data when the reflection enhancing lighting.

Device registration images can be camera, and in many preferred embodiments is the camera, but in some embodiments, the recording device can have only a limited number of pixels, only one pixel in the limit covers the entire image.

An example of such embodiment is illustrated in Fig. 16.

Fig. 16 shows a car with headlights. Lights 51, 51' are arranged to provide amplifying light and reference light to illuminate the road ahead. In the front of the machine provided with the device 52, 52' reception of light containing a matrix of n×m photo-sensors, in this example, one device of the Desk light for each of the headlamps, and n and m are numbers between 1 and, for example, 8. In the very exceptional case, the recording device is a single photosensor. Temporal multiplexing allows each photosensor to measure the effect on the corresponding area of the respective lights, a possible scheme see, e.g., Fig. 13. In the most basic form of single photosensor is used as the matrix, in other words, n and m are equal to 1.

Photosensors measure the effect of the spotlight upon irradiation of the reference light, and the headlamp is segmented into areas corresponding matrix fotobatch�cov.

Device registration light respectively is a device for reception of the reflected image, the number of pixels can be anything. In preferred embodiments, the device for registration is the camera, as it gives greater clarity.

Briefly the invention can be described as follows.

System to enhance the appearance of the object includes an illumination device for enhancing the illumination device and reception of light to reception of the reflection of the object of illumination on the object. The reference light is mixed with the reinforcing lighting. Information in the reflected light is filtered to filter data reflection due to the reference illumination. These data are used to calculate amplifying light in the processor.

In the claims, any signs of the references placed in parentheses should not be interpreted as limiting the claims.

The word "contains" does not exclude other elements or steps than those listed in the claims. The invention may be implemented by any combination of features of various preferred embodiments described above.

1. Lighting system, comprising:
- a processor (3) for data generation (4) enhancing lighting for pileni� appearance of the object;
- means (6) reference signal for providing data (7) of the reference light,
mixer (8) for mixed data (7) reference illumination data and (4) enhancing lighting,
- General lighting device (5) for illuminating the object with a mixture of the reference light and amplifying light,
device (1) registration of light to generate data (2) registered image of the object,
filter (9) for discharge data (2) registered image data (10) reference image of the reflected object generated by using the reference light, as reflected from the object, and the data is (10) the reference image of the reflected object are input into the processor (3) for data generation (4) enhancing lighting.

2. Lighting system according to claim 1, wherein the mixer (8) comprises a multiplexer (MUX) for TDM reinforcing illumination with the reference illumination and the filter (9) comprises a demultiplexer (DEMUX) for demultiplexing data of the registered image, to provide the data (10) reference image of the reflected object.

3. Lighting system according to claim 2, in which the multiplexer is capable of multiplexing the reference light amplifying lighting and without lighting from the lighting device (s).

4. The lighting system�in termination according to claim 1, in which the mixer (8) comprises a modulator (mod) to temporarily modulate the reinforcing illumination with the reference illumination and the filter (9) contains a time demodulator (demod) for temporal demodulation data of the registered image to provide data (10) reference image of the reflected object.

5. Lighting system according to claim 1, in which the mixer (8) comprises a modulator (mod) for spatially modulating and amplifying illumination with the reference illumination and the filter (9) contains a spatial demodulator (demod) for spatial demodulation data of the registered image to provide data (10) reference image of the reflected object.

6. Lighting system according to one of claims. 1-5, in which the reference light are spatially markers.

7. Lighting system according to claim 6, in which the spatial markers are formed spatial structure.

8. Lighting system according to claim 7, in which the spatial structure is a staggered structure.

9. Lighting system according to claim 4 or 5, in which the mixer (8) is made with the possibility of mixing in such a way that the average value of the reference lighting time, and/or image is essentially equal to zero.

10. Lighting system according to one of claims. 1-5, in which the total lighting device (5) arranged to the UK�design image.

11. Lighting system according to one of claims. 1-5, in which the total lighting device(5) and a device (1) registration share a common optical system.

12. Lighting system according to one of claims. 1-5, the system contains more than one shared lighting device (5, 5').

13. Method of illuminating an object, in which:
- ensure mixing data (7) reference illumination data and (4) enhancing lighting for General lighting device (5) for illuminating the object with a mixture of the reference light and amplifying light,
- register the image of the object to generate data (2) a registered object image;
- filter data (2) registered image of the object to highlight data (10) reference image of the reflected object generated by using the reference light, as reflected from the object,
moreover, these (10) the reference image of the reflected object is used to generate the data (4) enhancing lighting.



 

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1 dwg

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