Devices and methods for image graduations analyzing

FIELD: image processing means.

SUBSTANCE: invention relates to image gradations analyzing techniques. Disclosed is method of, at least two image graduations difference analyzing. Method includes stage, at which obtaining first vertical graduated LDR frame with first dynamic range of brightness. Then according to method receiving data coding second graduated HDR frame graduation with second dynamic range of brightness. At that, first and second dynamic brightness ranges are low and high dynamic brightness ranges. Further, according to method determining graduation difference data structure containing characteristic of, at least one area, in which there is difference in graduation between first and second graduated frames.

EFFECT: technical result is enabling of depicted scenes encoding adaptation, providing high-quality images visualization.

8 cl, 8 dwg

 



 

Same patents:

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image signal processing systems. An image signal processing device is disclosed. The device includes a receiving unit for receiving an image signal and setting information for each given segment of the image signal including image type setting information to define whether the image signal represents a stereoscopic image. The device also includes gamma correction setting information to define a gamma correction value for the image signal. The device also includes a gamma correcting unit for performing gamma correction for the image signal based on the gamma correction setting information included in the setting information received by the receiving unit. The device also includes a stereoscopic image processing unit for selectively performing a process to display the stereoscopic image for the image signal corrected by the gamma correcting unit based on the image type setting information included in the setting information received by the receiving unit.

EFFECT: high quality of the displayed image owing to gamma correction of the image depending on the type of image.

9 cl, 16 dwg

FIELD: physics.

SUBSTANCE: disclosed is a method of selecting the display source light illumination level involving the following sequence of actions. Calculating a luminance channel from three-colour-channel image data for an input image. Calculating a compound colour channel from the three-colour-channel image data. Generating a two-dimensional histogram from the luminance channel and the compound colour channel. Converting the two-dimensional histogram to a one-dimensional histogram. Determining a performance factor using the one-dimensional histogram. Selecting the display source light illumination level based on the performance factor.

EFFECT: higher source light intensity or higher image quality at a fixed source light illumination level, improved dynamic range of specific image frequency bands, gray gradations and other parts of the image.

20 cl, 119 dwg

FIELD: information technology.

SUBSTANCE: to bring separate single-pixel indicators and separate logic pixels into conformity, a control table is used, which determines the order of displaying image data on the screen of a display device. One single-pixel indicator and one logic pixel correspond to an arbitrary element of the control table. An indicator of a defined colour is activated to generate light flux according to data of the same colour selected from the logic pixel. Selection of these data from the logic pixel and activation of that single-pixel indicator are repeated at high speed. The order of arrangement on the image data plane of geometric centres of non-overlapping or partially overlapping groups from the plurality of logic pixels coincides with the order of arrangement on the surface of the screen of the display device of conditional geometric centres of non-overlapping groups from the plurality of single-pixel indicators, which (groups from a plurality of single-pixel indicators) correspond to those groups from the plurality of logic pixels. Each group from the plurality of logic pixels mutually explicitly corresponds to a group from the plurality of single-pixel indicators. To increase brightness of the image displayed on the screen of the display device, that screen contains white-colour single-pixel indicators which are activated to generate light flux according to data calculated based on data contained in logic pixels which correspond to those white-colour single-pixel indicators.

EFFECT: broader functional capabilities, particularly display of raster data of a colour image on the screen of a display device, higher brightness of the image displayed on that screen.

16 cl, 21 dwg

FIELD: physics.

SUBSTANCE: distortion module reduces brightness of a backlight source according to the video signal histogram so that contrast can be a predetermined target contrast. A configuration projecting unit sets the gain according to the brightness level of the backlight source selected by the distortion module. During setup, the gain is attached to the control brightness level of the backlight source preset according to the video parameter value. If the video parameter value satisfies a preset condition, the input video signal is always amplified with the gain, otherwise the input video signal is amplified or not.

EFFECT: broader functional capabilities of the video display device, particularly preventing limitation of the white level, possibility of display with a sensation of lightness, for which the limitation of the white level is controlled, possibility of presenting lightness without full white filling and achieving a video image with an improved black level.

16 cl, 36 dwg

FIELD: selective lighting of electronic device displays.

SUBSTANCE: effect is achieved due to ensured detection of an event which causes renewal of display, and activation of lighting elements for lighting the display, and determining whether information that should be displayed is going to occupy a display area. If so, that display area is selectively lit by one or more lighting elements. Predetermined lighting period may depend on selected combination of area size, position of aforementioned area and/or priority, connected to the event.

EFFECT: reduced consumption of energy of batteries.

2 cl, 9 dwg

The invention relates to lighting and can be used as a power supply for an electroluminescent light panels

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image generation. A method of generating a three-dimensional (3D) representation of an object, comprising steps of: acquiring 3D topographic data representative of at least one portion of the object having a macroscopic form and microscopic features of marks from application on the surface of the object; separating the 3D topographic data into microscopic data representative of the microscopic features and macroscopic data representative of the macroscopic form; independently scaling the microscopic data or the macroscopic data in order to enhance the microscopic features with respect to the macroscopic form, thereby obtaining scaled topographic data; and generating 3D image using the scaled topographic data, thereby obtaining a modified representation having enhanced microscopic features for the at least one portion of the object.

EFFECT: simple method of comparing objects when there is need to simultaneously compare the macroscopic form of the objects and microscopic features thereof.

19 cl, 10 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to visualisation systems of medical data. The invention proposes a method for shaping a medical image of an object using a medical visualisation device containing a detector. The method involves a step, at which the detector is offset during collection of visualisation data, starting from the first offset position, in which the detector is offset from the centre of rotation and covers approximately the first half of the object width so that the detector can be located in the second offset position at the end of collection of data; with that, the second offset position differs from the first offset position. When in the second offset position, the detector is offset from the centre of rotation and covers mainly the rest half of the object width, which was not covered by the detector in the first offset position. Further, according to the method, visualisation data is collected by means of the detector and reconstructed to obtain the reconstructed object image.

EFFECT: improvement of accurate reconstruction of an image of the whole visualised object due to reconstruction of the object image obtained by collection of visualisation data from the detector offset from the centre of rotation.

8 cl, 22 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to means of processing digital images. The method includes obtaining a series of images of a three-dimensional object with a given scene depth pitch and converting said images into a spatial spectrum using two-dimensional Fourier transform, processing the obtained spatial spectra of images in the series by spatial-frequency filtering, performing coordination of scales of the images in the series, summing the filtered and scaled spatial spectra of the images, performing reconstruction of a sharp image of the object using inverse two-dimensional Fourier transform of the summed spatial spectrum of the image.

EFFECT: obtaining a sharp image of a three-dimensional object with an unlimited depth of field.

4 cl, 4 dwg

FIELD: physics.

SUBSTANCE: method includes steps of obtaining source images and determining the most informative image. Further, the method includes integrating images based on combination of the most informative image and distinctive features of a second image, and levelling the brightness range of the resultant image. Image integration includes determining an estimate of linear regression coefficients of brightness values of the second image from brightness values of the most informative image. Further, the method includes forming an intermediate image as a result of linear transformation of the most informative image with the found coefficients and finding an integrated image by adding to the most informative image the difference between the second and intermediate images, multiplied by an adjusting factor.

EFFECT: high quality of an image containing information-bearing elements of images of the same scene.

13 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image processing, computer vision and video analysis. The method includes obtaining a series of images or a sequence of video frames of an object; selecting an image or accumulator video frame and evaluating movement of elements of the object relative to the selected image or accumulator video frame for at least one obtained series of images or sequence of video frames; based on said evaluation of movement, performing movement compensation and accumulating a signal of elements of the object based on the selected image or accumulator video frame for at least one series of images or video frames; forming a compensated high-resolution image of the object, obtained based on compensation and accumulation of the signal; and recognising the object in the obtained compensated high-resolution image.

EFFECT: improved object recognition quality.

27 cl, 6 dwg

FIELD: physics.

SUBSTANCE: system comprises the following: the system contains: input device (14) for reception of radionuclide image and morphological images of an object, processing unit (15) configured for: processing of morphological images for obtaining the information on rare movements of an object, obtaining of reduced series of measurements from fast detection of signals along the parallel bundle of rays, parametrisation and adaptation of the motion model for calculation of motion of a patient from the reduced series of measurements, use of the information on rare motions and the motion model for obtaining the information on estimated motion of an object, generation of the time-dependent attenuation scale, on the basis of the information on the estimated movement, generation of the radionuclide image with the movement correction on the basis of the obtained radionuclide image and the time-dependent attenuation scale, and the output device (17) for output of reconstructed radionuclide image.

EFFECT: providing of obtaining of high-quality radionuclide image of a moving object.

10 cl, 2 dwg

FIELD: information technologies.

SUBSTANCE: images are produced in a multi-level codec of the first flow with the first dynamic range and the first colour space, and the second flow of the image with the second dynamic range. The first flow of the image is produced by performance of a local tonal display on the second flow of the image, using the functional form that displays a family of curves of the tonal image, parametrised by means of one parameter, besides, the first dynamic range is less than the second dynamic range, and the first flow of the image is in the base layer, and the second flow of the image is in the expansion layer. The multi-level codec includes a decoder and a coder. The first flow of the image is coded in the base layer using a coder to produce the coded first flow of the image. The coded first flow of the image is decoded using a decoder to produce a decoded first flow of the image. The decoded first flow of the image is converted from the first colour space into the second colour space of the second flow of the image to produce the colour first flow of the image. Parameters of the reverse tonal image are generated on the basis of the converted colour flow of the image and the second flow of the image, where parameters of the reverse tonal image approximate the second flow of the image when applied to the converted colour flow of the image.

EFFECT: increased efficiency of coding.

20 cl, 15 dwg

FIELD: information technology.

SUBSTANCE: device has an image sensor which includes an array of a plurality of image forming pixels and a plurality of focus determining pixels which receive light rays passing through exit pupils of image forming lenses while they are partially shielded, a vertical output line, a vertical summation unit which sums, in the vertical direction of the image sensor, signals from a plurality of pixels, aligned in one column, and a control unit which performs control so that the vertical summation unit is always off when the focus determining pixel is included among pixels having signals to be summed, when summing signals from a plurality of pixels in the vertical direction and reading said signals through the vertical summation unit.

EFFECT: enabling mixing of signals of image forming pixels and focus determining pixels.

7 cl, 32 dwg

FIELD: information technology.

SUBSTANCE: disclosed is a method of forming a composite image based on a separate image, wherein a separate image is obtained, the separate image is compared with a composite image, a mismatch value is obtained based on pixel-by-pixel comparison of the separate image and the composite image, and the mismatch value is decreased by changing at least the combined image or the separate image.

EFFECT: high accuracy and speed of forming a composite image based on a separate image.

44 cl, 6 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a technique of obtaining digital images of an object, primarily for aerographic and reconnaissance purposes. An image with a large dynamic range is formed by summing images of an object obtained at different exposures, which are modified to the real brightness. The value of the parameter which determines capturing efficiency is determined for each pixel of each image. The most informative elements of each image are assigned the maximum weight coefficient during summation.

EFFECT: high quality of the resultant image.

FIELD: video image processing.

SUBSTANCE: unit for pixel depth increasing is implemented with the possibility to scale colour pixel depth of video image frame, an area subdividing unit is implemented with the possibility to divide a video image frame producing areas of equal size for each colour and ensuring successive switching-over between areas and colours; at that, each conveyor is implemented with the possibility to delete false contours in two areas in four directions simultaneously, and an averaging unit is implemented with the possibility to calculate an average sum of data from outputs of four conveyors for each colour.

EFFECT: increase of image colour pixel depth along with deletion of false contours in real time.

16 cl, 3 dwg

FIELD: physics.

SUBSTANCE: invention is related to system and method for generating of image with expanded dynamic range (EDR) from grouped sequence of scene images, even with motion of scene or camera between images. Technical result consists in creation of better method for fixation of full radiation of static scene to create of EDR map. The said result is achieved due to the fact that one of images is selected as a reference image, every non-reference image is matched with one of the other images, as well as with reference image, which shows exposition, which is closer to this reference image than the one of considered image, and is closest among other images to exposition of considered image, generating field of flux. Fields of flux, which are generated for non-reference images, that are not any longer matched with reference image, are fixed for matching each of them with reference image, and every non-reference image later is changed with the help of flux field connected with it. Reference image and altered images are combined to create of luminosity chart that represents EDR image.

EFFECT: creation of better method for fixation of full radiation of static scene to create expanded dynamic range chart.

20 cl, 15 dwg

FIELD: physics, image processing.

SUBSTANCE: invention is related to the field of image processing and may be used to edit image, when dimensions, proportions and mutual location of most important objects are not violated. In method and system for adaptive reformatting of digital photos and images of documents, rule is selected for calculation of cost function for pixel depending on results of image analysis; cost and history maps are generated; image dimensions are varied by addition / removal of at least one found path with application of interpolation, using both horizontal and vertical paths. Horizontal path is the chain of connected pixels, in which initial pixel of path is located on the left border of image, the final pixel of path - on the right border of image. Number of pixels in path is equal to width of image in pixels. Vertical path is the chain of connected pixels, in which initial pixel is located at upper border of image, the final pixel of path - at lower border of image. Number of pixels in path is equal to height of image in pixels. Searching of path is carried out by minimisation of total cost of path pixels. Generation of cost and history maps is repeated, as well as stages of image size variation, until one of two results is achieved: required image size is obtained; total cost of path exceeds preset threshold.

EFFECT: higher quality of reformatted images.

9 cl, 23 dwg

FIELD: physics.

SUBSTANCE: sufficient light is obtained through several first exposures together with one second exposure in quick succession. The first exposures are combined to provide sufficient brightness and sharpness. The second exposure is meant for collecting colour information. The first exposures are combined with the first exposures to provide an improved image.

EFFECT: creation of images with a high dynamic range from multiple exposures.

30 cl, 3 dwg

FIELD: physics.

SUBSTANCE: device comprises a module (101) for detection of a movement vector, which detects a vector of movement in each earlier specified area between frames of the introduced image signal, and a module (2) for identification of circuits, which emphasizes a high-frequency component of the introduced image and a signal of an interpolated image, formed by means of a module (100) for conversion of frame frequency (FRC-module), according to the value of movement of the introduced image signal detected by means of the module (101) for detection of a movement vector. This is compensated by a high-frequency component weakened by means of an image sensor effect of integration in time, to reduce visible blur of moving object images to increase sharpness of a displayed image. By setting an extent (a level) of the interpolated image signal circuits as a lower extent of the signal of the introduced image, the sharpness of the displayed message increases without isolation of the interpolated image signal image deterioration.

EFFECT: displaying video of high sharpness by means of reducing blur of images of moving objects of the displayed video as a result of the image sensor effect of integration in time.

12 cl, 16 dwg

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