Method and device for generating image filter

FIELD: physics.

SUBSTANCE: method for generating an image filter is proposed. The method comprises the step of obtaining a selected image with a filter effect. Further, according to the method, a group of similar images is obtained by using an image with a filter effect, wherein the group of similar images contains, at least, one similar image with a similar structure, as in the image with the filter effect, but without the filter effect. Further, according to the method, the display ratio for converting the group of similar images to the image with the filter effect is calculated and the display ratio is used as an image filter.

EFFECT: increasing the accuracy of the self-defined image filter by converting the group of similar images into the image with the filter effect.

7 cl, 6 dwg

 



 

Same patents:

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: physics, video.

SUBSTANCE: invention relates to video encoding/decoding techniques which employ a loop filter which reduces blocking noise. The technical result is achieved due to that a video encoding/decoding device, which encodes or decodes video using a loop filter, includes a deviation calculating unit which calculates deviation between a target noise cancellation pixel and a neighbouring pixel of the target pixel using a decoded image. A pattern form establishing unit limits the pattern form such that the less the deviation from the maximum deviation in the decoded image, the smaller the pattern form. When removing target pixel noise, using a weight coefficient in accordance with the degree of similarity between the pattern of the target pixel and the pattern of each search point in the form of a search and a weighted sum of pixel values at search points, the loop filter compares patterns using the limited pattern form and removes the target pixel noise.

EFFECT: reduced computational complexity of the noise cancellation filter, thereby preventing deterioration of encoding efficiency.

5 cl, 19 dwg

FIELD: information technology.

SUBSTANCE: device includes an input lens, a memory unit, a bus, a video sensor, a movement estimation unit, a frequency divider and video sensor resolution selection unit, a unit for single-step enhancement of the whole frame, a clock frequency generator unit, a unit for selecting faces of people, a unit for iterative enhancement faces of people, an image combining unit and a conflict resolver.

EFFECT: high quality of facial images contained in frames of an input video sequence, high quality of moving and fixed regions of the image by increasing spatial resolution of the image and reducing the blurring effect arising from relative movement of the imaging device and the captured scene.

2 dwg

FIELD: information technologies.

SUBSTANCE: method includes performance of the following operations: digital copy of initial printed document is produced in colour space of RGB, brightness difference is detected, and direction of maximum gradient is determined, current count of image is classified for its affiliation to area of brightness difference or uniform area without sharp changes of brightness, Gauss smoothening of current count is made, if it is classified as belonging to uniform area without sharp changes of brightness, current count is smoothened in anisotropic manner, if it is classified as belonging to the area of brightness difference.

EFFECT: invention makes it possible to carry out fast single-stage descreening of screen-type pattern images with preservation of contour differences and increased accuracy.

5 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: first band pass (BP) is determined based on initial image data; a matrix of filter coefficients (FC) is calculated to obtain frequency characteristics corresponding to limitation of frequency band (FB) using the first BP; data of the first filtered image are generated by filtering data of the initial image using the matrix of first FC; an estimate value of the objective image quality of data of the first filtered image is obtained and the distribution coefficient (DC) is calculated, which is used to determine the optimum BP based on the estimate value of objective image quality; the optimum BP corresponding to the calculated DC is determined using a table in which the corresponding relationship between DC and optimum BP is defined; a matrix of optimum FC is calculated to obtain frequency characteristics corresponding to limitation of FB using the optimum BP; and data of the optimally filtered image is generated by filtering data of the initial image using the matrix of optimum FC.

EFFECT: adaptive image filtering process for providing high-quality image.

3 cl, 11 dwg

FIELD: physics; image processing.

SUBSTANCE: present invention can be used, for instance, in resolution transformation. In the device and method for processing images, gradient direction v1 of the edges with the largest gradient of pixel values is detected, as well as direction v2 of the edges, orthogonal to the gradient direction v1 of the edges. Processing is done for improving and smoothing out in the gradient direction v1 and direction v2 of the edges, respectively, so as to generate image output data D2.

EFFECT: prevention of loss of high-frequency components and appearance of stepped images.

10 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: pixels data of the current video sequence frame is recorded to the buffer of current frame, and the pixels data of the previous video sequence frame is recorded to the buffer of previous frame; motion between current and previous video sequence frames is determined in the differences calculation block; the calculated motion between previous and current frames is recorded to the motion data buffer; the data from the current frame buffer is recorded to the previous frame buffer; partial derivatives for every channel of the current frame are determined in the partial derivative calculation blocks for X-direction and Y-direction; spatial averaging of directional derivatives for each channel of the current frame, as well as channels smoothing in the first and the second smoothing blocks are performed; direction of the edge for every pixel position of the current frame is calculated in the arctangent calculator; anisotropic filter for every pixel position of the current frame is formed and recorded to the memory of filter values; anisotropic filtering of all pixels of the current frame, their motion exceeding predefined limit in the anisotropic filtering block, is done.

EFFECT: increased quality of dynamic video picture due to changes in anisotropic filtering with adaptive mask.

7 cl, 2 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image processing means. The device comprises an image acquiring unit, an image information acquiring unit which indicates image content, a correction factor determining unit for eliminating a horizontal direction component or a vertical direction component of image deformation based on the image information, a unit for correcting image deformation according to the determined correction factor, which determines the correction factor of the horizontal direction component or vertical direction component, which indicates a coefficient for leaving part of deformation.

EFFECT: maintaining balance of distortion and possibility of imaging.

10 cl, 18 dwg

FIELD: physics.

SUBSTANCE: in the method, each odd-numbered line corresponds to an infrared image and each even-numbered line corresponds to a television image with further interlinear exchange of parts of opposite pixels based on an algorithm, in which each pixel is divided in proportion into three parts, after which two parts of the i-th pixel of the k-th line is summed with the remaining portions of the i-th pixels of the (k-1)-th and (k+1)-th lines.

EFFECT: high information value of the resultant image.

4 dwg

FIELD: physics.

SUBSTANCE: invention relates to means of compensating for image jitter on a mobile computing device. The system comprises memory for storing profiles describing human gait, which include model data and compensation data, the model data including a sequence of anticipated movements of the mobile device, including the direction and value of the anticipated movements, the compensation data describing a sequence of image data adjustments, a processor which is programmed to continually receive data from an accelerometer, compare the received data to the model data from the profiles, identify a profile based on the comparison, receive image data for display on the mobile computing device, adjust the received image data based on the compensation data.

EFFECT: providing image jitter compensation on a mobile computing device by modifying display data based on compensation data associated with the gait profile of a user.

20 cl, 7 dwg

FIELD: information technology.

SUBSTANCE: method for alphabetical representation of images includes a step for primary conversion of an input image to a multi-centre scanning (MCS) format, constructed according to rules of a plane-filling curve (PFC). The initial MSC cell is a discrete square consisting of nine cells (33=9), having its own centre and its own four faces (sides). Scanning of the initial MSC cell is performed from the centre to the edge of the square while bypassing the other cells on a circle. The path with a bypass direction to the left from the centre of the square and then on a circle, clockwise, is the priority path for scanning and displaying images.

EFFECT: high efficiency of encoding images.

3 cl, 5 dwg

FIELD: physics, computer technology.

SUBSTANCE: invention relates to display devices. The device has a mechanism for obtaining graphic data, which generates frame data from input graphic data, a frame buffer control unit which determines if the connected display device has a frame buffer. If the connected display device has a frame buffer, said control unit bypasses the operation of storing frame data in a local frame buffer and transmits the frame data to the connected display device.

EFFECT: high efficiency of the device for processing graphic data owing to use of a remote frame buffer.

20 cl, 8 dwg

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