Abstract: A method, system, and computer-readable storage medium are disclosed for color conversion of a digital image. The digital image comprises a source set of pixels. A perceptual distance may be determined between the source set of pixels and a respective destination set of pixels for each of a plurality of rendering intents. A rendering intent corresponding to the smallest perceptual distance may be selected automatically. The source set of pixels may be converted to an output set of pixels using the selected rendering intent.

Abstract: In accordance with the disclosure, a method is provided for processing color images for rendering on a color image. The method comprises receiving a plurality of device color separations for an image intended for rendering on a color image device; forming at least one intermediate image by interleaving pixels from at least two of the device color separations, compressing the at least one intermediate image in a compression module; decompressing the at least one intermediate image in a decompression module; processing the at least one decompressed intermediate image through a multidimensional calibration transform to output a calibrated device color separation; and, the device color separations include at least three colors.

Abstract: A display color-correcting system is provided. Color response values are measured that go into the vertices of polyhedra in a cubic color output space of the display. A set of corresponding values for the display is built from intermediate values determined between the measured color response values. The intermediate values are determined by decomposition and interpolation of interpolation volumes in the cubic color output space. Each of the interpolation volumes is the combined volume of a selected polyhedron within the cubic color output space and a predetermined volume of space between the selected polyhedron and the next polyhedron within the cubic color output space. The set of corresponding values is converted into decoupled RGB adjustment values that specify the RGB signals independently for the display to produce corrected colors. The RGB adjustment values are saved into one or more look-up tables.

Abstract: A circuit and method for reducing artifacts in decoded color video and images are disclosed. The circuit includes a buffer for receiving an input pixel in a first color-space, and a detector for determining after transformation into a second color-space, if at least one component of the transformed pixel would fall outside a predetermined range. The determination may be made by comparing components of the input pixel, to corresponding ranges in the first color-space. Upon determining that at least one component of the transformed pixel would be outside a corresponding predetermined bound in the second color-space, the detector causes the circuit to output a pixel in the first color-space, with at least one predetermined component. The output of the circuit may subsequently be converted to the second color-space by an external color-space converter and displayed onto a color display. The method reduces visible artifacts caused by clipping during color-space conversion.

Abstract: An integrated circuit includes display processing components to process pixel data of digital video. The integrated circuit also includes mask-programmable logic integrated with one or more of the display processing components to receive the pixel data in a first color space and at least a second color space, where the mask-programmable logic can further process the pixel data to enhance the digital video.

Abstract: Embodiments of the present invention generally provide m Methods and apparatus for reducing power consumption of backlit displays are described. Power consumption is reduced by dimming backlighting by a first scale factor and boosting pixel values by a second scale factor to compensate for the dimming. The scale factors may be constant values. Alternately, one or both of the scale factors may be determined based on pixel values for one or more frames to be displayed and/or one or more frames that have been displayed. For example, scale factors may be calculated based on an average linear amplitude of one or more frames of pixel values or from a maximum pixel value of one or more frames of pixel values. A graphical processing system is described including an integrated circuit capable of transforming a pixel value from a gamma-compensated space to a linear space.

Abstract: A technique that can contribute to improvement of processing efficiency in performing image processing employing an SIMD command is provided.

Abstract: In one embodiment, the present invention includes a method to convert a pixel tuple in a red, green, blue (RGB) color space having R, G, and B color values into a human recognizable color name corresponding to a range of numerical values of a linear color palette scale based on application of the RGB color values to a predetermined set of hierarchical rules. Other embodiments are described and claimed.

Abstract: A method for color conversion includes calculating distances between color coordinates in a conversion palette and a color coordinate for a pixel and assigning the pixel a color coordinate of the closest color coordinates in the conversion palette. The color coordinates in the conversion palette include a first point and a second point in an RGB color cube on a neutral axis of said RGB color cube and on opposite surfaces of a first sphere, a third point and a fourth point on the neutral axis and on opposite surfaces of a second sphere and on the neutral axis, and a plurality of other points distributed over a surface of the first sphere and around the neutral axis, where a volume of the second sphere is twice the volume of the first sphere, and a center of the first and second spheres is a center of the RGB color cube.

Abstract: Conventionally, a user interface used to change the color of a digital image has a configuration in which three elements, i.e., hue, chroma, and brightness are independent from each other, and the relationship among the three elements are difficult to be recognized, resulting in poor usability. This invention provides a user interface which movably displays a color object that represents an original color on a chromaticity diagram that expresses an arbitrary color system. The user can designate a destination color by moving the color object on the chromaticity diagram. For this reason, the user can easily select and designate a practical color.

Abstract: In a method of mapping data from a source space to a target space, a space transformation look-up table (LUT) that contains a plurality of locations storing information is maintained, wherein each of the plurality of locations includes information specifying a function to be evaluated. First data defined according to a multi-dimensional source space is input, and second data defined according to a multi-dimensional target space is generated, by applying information contained in the LUT to the first data.

Abstract: A video receiver for SCART input includes an input configured to receive a composite video signal, RGB signals, and a switch-indicating signal, a first digitizer module coupled to the input and including a one-bit slicer configured to receive and convert the switch-indicating signal to a one-bit digital signal, the first digitizer further including a downconverter configured to convert the one-bit signal to a multi-bit digital signal with non-abrupt transitions between a logical zero and a logical one, and a combiner module configured to receive and combine indicia of the composite video signal and the RGB signals to produce a total video output signal as a function of the indicia of the multi-bit digital signal.

Abstract: This invention can reduce the circuit scale by synthesizing OSD data to be superposed on a picture of each resolution by using common OSD data. According to this invention, a video resolution converter converts an HD (High Definition) video signal into an SD (Standard Definition) video signal such as an NTSC or PAL video signal. A memory controller receives a sync signal identical to an SD picture obtained by frequency-dividing an HD video signal, and a sync signal based on an SD video signal, and reads out OSD data (4 bits per pixel) from the memory on the basis of these sync signals. The OSD data read out on the basis of the SD video signal is synthesized with the SD video signal by an SD_OSD_MIX unit, and then output. The OSD data read out on the basis of the SD sync signal synchronized with the HD is multiplied by an integer by an OSD resolution converter, synthesized with an HD video signal by an HD_OSD_MIX unit, and then output.

Abstract: The disclosed embodiments relate to a system and method for modifying video signals. The system may comprise at least one decoder that decodes a video signal that comprises embedded picture setting data, and a video processor that is adapted to detect whether the system is operating in an on-screen display (“OSD”) mode, apply the embedded picture setting data if the system is not in the OSD mode, and withhold the embedded picture setting data if the system is in the OSD mode. The method may comprise the acts of decoding a video signal that comprises embedded picture setting data, detecting whether a system is operating in the OSD mode, applying the embedded picture setting data if the system is not in the OSD mode, and withholding the embedded picture setting data if the system is in the OSD mode.

Abstract: A display color-correcting system is provided. Color response values are measured that go into the vertices of polyhedra in a cubic color output space of the display. A set of corresponding values for the display is built from intermediate values determined between the measured color response values. The intermediate values are determined by decomposition and interpolation of interpolation volumes in the cubic color output space. Each of the interpolation volumes is the combined volume of a selected polyhedron within the cubic color output space and a predetermined volume of space between the selected polyhedron and the next polyhedron within the cubic color output space. The set of corresponding values is converted into decoupled RGB adjustment values that specify the RGB signals independently for the display to produce corrected colors. The RGB adjustment values are saved into one or more look-up tables.

Abstract: The invention relates to a method for displaying an autostereoscopic image having N viewpoints on at least a portion of a screen containing display pixels arranged in lines and columns, each display pixel containing a first, a second and a third color point aligned on the same line and each being of a different color (R.V.B.). The first display pixel of one line is constituted of color points of row 1 to 3, the second display pixel of one line is constituted of color points of row 4 to 6, the display pixel of row q of a line is constituted of color points of row (3q 2) to 3q. According to the inventive method, N is greater than 1 and the pixels of an autostereoscopic image to be displayed are displayed in such a manner that the 3 color points of each display pixel display 3 homologous color component color points of pixels of the autostereoscopic image coming from at least two pixels of the same row of at least two different viewpoints.

Abstract: There is provided an image processing apparatus capable of preventing colors from changing while being displayed when images are combined. The image processing apparatus according to an embodiment includes a video graphic processor 12 that combines a plurality of image signals to generate a combined image signal and an HDMI Tx 14 that transmits, when the combined image signal is transmitted, an identification flag of one of a first color space standard and a second color space standard having a color gamut wider than a color gamut of the first color space standard as the color space standard of the combined image signal and a host CPU 13 decides the first or second color space standard so as to prevent change in color while being displayed.

Abstract: A method (300) of converting interlaced Moving Picture Experts Group (MPEG) video signals to progressive video signals can include receiving an interlaced video signal representing a luma component specifying luma lines and a chroma component specifying chroma lines (310) wherein the chroma component can specify approximately one-half the number of lines of the luma component. The interlaced video signal can be decoded and the number of the chroma lines can be increased to approximately the same as the number of the luma lines (320). The number of chroma lines of the interlaced video signal then can be decreased (340), to substantially reverse the previous increase. The interlaced video signal then can be deinterlaced to produce a progressive video signal (350), which can be processed further (360) as needed.

Abstract: In a method and system for performing color correction for an image signal, a first set of matrix coefficients for color correction of the image signal in a 3-dimensional RGB color space is transformed to a first set of points of a two-dimensional XY plane. In addition, the first set of points is modified to a second set of points in the XY plane for tuning image quality. Furthermore, the first and second sets of points in the two-dimensional XY plane are displayed such as on a graphical user interface of a computer system.

Abstract: It is an object to provide a semiconductor device in which a correct video signal is inputted into a display regardless of whether a luminance signal and a color-difference signal, or a three-primary color signal of R, G, and B is inputted as a video signal and which is also applied to the case of a digital video signal, and a driving method thereof. The display device includes a display panel, and a video format conversion circuit.

Abstract: A method, graphics card, system, and data stream for generating a deep pixel display on a display device are provided. A first set of data relating to a region associated with a display is provided. The first set of data is processed to define a pixel definition. A second set of data relating to the first pixel is determined. At least one portion of the first set of data is rearranged to form at least a portion of the second set of data. A deep pixel is defined based upon the second set of data. The present invention also includes a system that includes a display controller that is adapted to define a deep pixel based upon rearranging the portion of the first set of data.

Abstract: The invention discloses a hue dividing and judging device including a memory unit, a calculation module, and a judgment module. The memory unit is used for storing a look-up table, and the look-up table records N boundaries, wherein the N boundaries includes j+1 operative boundaries for defining j color areas. The calculation module is used for calculating the hue of each pixel of an input image. According to the look-up table, the judgment module is used for judging where the hue of each pixel falls within two of the operative boundaries, so as to judge that the hue of the pixel of the input image falls into which one of the color areas. Accordingly, if there are more operative boundaries recorded in the look-up table, the hue will be divided into more color areas, and the user will have more choices for adjusting the color of the input image.

Abstract: A method of displaying color objects for the screen control display is provided. First, a plurality of elements and son elements on a screen control display respectively to a first level list and a plurality of second level lists is provided. Each of said elements of said first level list includes said son elements each of which composed of a foreground object and a background object in said second level lists. Then, a color mapping table having a plurality of group indexes is provided. Each of said group indexes is mapped into a corresponding palette having a plurality of color indexes. Finally, each of said elements with said group index and said color index is mapped for displaying colors of said foreground object and said background object of said element composed of said group index and said color index respectively.

Abstract: Aspects of the invention may include a method updating a color look-up table (CLUT) for a next line of graphics before a current line of graphics has been completely read out of a graphics FIFO and assigned color pixel values. The method may include the step of formatting or arranging the CLUT into a plurality of sub-CLUTs. Each one of the sub-CLUTs may include pixel color values for each one of a plurality of pixels which may include a line of the graphics image data. Pixel color values may be read from within a first selected sub-CLUT, the first selected sub-CLUT comprising pixel color values for a first line of the graphics image data. The read pixel color value may be applied to the current first line of the graphics image data. While the read pixel color value is being applied to the current first line, pixel color values for a second selected sub-CLUT may be updated. The second selected sub-CLUT may include color pixel values for a second line of the graphics image data.

Abstract: There is provided a color evaluating method of an image display device, which evaluates colors displayed by the image display device, including: displaying an image evaluation image, in which a plurality of color regions corresponding to a pixel or a plurality of pixels of the image display device and each having one of a plurality of colors is included and, among the plurality of color regions, at least one color region and at least one other color region having a color similar to that of the one color region are arranged to be adjacent to each other, on the image display device; and evaluating the colors displayed by the image display device based on picked-up image data obtained by picking up the color evaluation image displayed by the image display device.

Abstract: An image processing device is comprised of a parameter storing unit (i) storing a plurality of inverse gamma correction parameters, color conversion parameters, gamma correction parameters and the like, and (ii) selecting one parameter from each of a plurality of such parameters according to an inputted image signal. Further, the image processing device includes an image signal processing unit performing image signal processes such as inverse gamma correction, color conversion, gamma correction and the like, on the basis of the parameters selected by the parameter storing unit.

Abstract: The conversion of Mobile Display information used in a wide variety of Mobile Devices into Unified Image Formats is disclosed to enable viewing on a desktop computer system in addition to manual and automated testing of Mobile Content. In order to support the variety of Mobile Displays available, and to process the Mobile Display information in real-time, a configurable emulation system may be employed to model the Image Commands being used for each type of available Mobile Display. This emulation system can then provide a representative view of the image as it would be displayed on the Mobile Display, but in a format that can be utilized by other manual or automated systems.

Abstract: An integrated circuit has a substantially non-customizable hardware portion and a mask-programmable logic portion. An image processing function common to many different makes and models of a type of electronic consumer device (for example, an image display device) is performed by the substantially non-customizable hardware portion. The substantially non-customizable hardware portion also outputs pixel data in both a first color space format and a second color space format. The mask-programmble logic portion can be mask-programmed for an individual manufacturer of electronic consumer devices such that the mask-programmable logic portion performs an additional special function specific to the electronic consumer devices of the individual manufacturer. Certain functions are better or more easily performed on pixel data in one color space format than another.

Abstract: A method, apparatus, and system for generating a deep pixel display on a display device are provided. A first set of data relating to a first pixel is provided. The first set of data is stored. A second set of data relating to the first pixel is provided. At least one portion of the first set of data is combined with at least a portion of the second set of data. A deep pixel is defined based upon combining the portion of the first and second sets of data. The present invention also includes a system that includes a display controller that is adapted to define a deep pixel based upon combining the portion of the first and second sets of data.

Abstract: A user provides a plurality of video frames for processing, and selects a cartoon color palette. The color of all selected pixels within all selected video frames is changed to that of the closest match in color within the cartoon color palette and is stored in a memory. Optionally, the user may create a custom cartoon color palette, and may select less than all of the pixels in any given video frame for processing.

Abstract: In a method and system for controlling rotation of a color image stored as sub-sampled image data in a memory, a controller includes a finite state machine (FSM) operable to fetch the sub-sampled image data and provide the sub-sampled data as a plurality of pixels to form the color image having a predefined angle of rotation. The FSM provides a predefined address of sub-sampled image data describing the color image stored in the memory to an addressing unit. The addressing unit is operable to read twice the sub-sampled image data located at the predefined address. A memory device is operable to push each read instance of the sub-sampled image data. A pipeline controlled by the FSM is operable to pull and selectively read the sub-sampled image data from the memory device for generating the plurality of pixels.

Abstract: Methods and apparatus for generating images, compressing image data, decompressing image data, and processing the decompressed image data so that it can be used by a rendering circuit of a device, e.g., a set top box, are described. Images are generated in the native format used by the rendering circuit of the device which will ultimately control the display of the image avoiding the need to perform processing associated with converting color component information from one format to another. Uncompressed image data is arranged in a file with color component values being grouped separately from alpha values to facilitate compression by a standard file compression technique. The file is compressed using a conventional file compression operation. The compressed image file is decompressed when needed and the alpha data and color component data is reorganized so that the color component values and alpha value(s) corresponding to individual pixels are grouped together.

Abstract: A multiplexer of a transmission section generates a clock signal by multiplying a reference clock signal of a digital image signal by a predetermined number ‘K’. A parallel digital image signal is converted into a serial digital signal on the basis of the clock signal, and the serial digital signal is converted into an optical signal in an optical transmission section for transmitting. A demultiplexer extracts a reception clock signal from a serial digital reception signal which is converted into an electric signal in an optical reception section of a reception section, the serial digital reception signal is converted into a parallel signal and a signal corresponding to the parallel digital image signal on the basis of the reception clock signal, and a clock signal corresponding to the reference clock signal is recovered by multiplying the reception clock signal by ‘1/K’.

Abstract: A method for processing a detected eye of an image to provide visual enhancement. The method includes determining whether an eye exists within an image. The eye includes an eye color. If the eye exists within the image, the method also includes determining the location of the eye within the image. Furthermore, the method includes processing the eye to provide visual enhancement to the eye without substantially changing the hue of the eye color of the eye.

Abstract: A video output device which converts image data into a YUV system video signal composed of a brightness signal Y and a chrominance signal UV and outputs the video signal obtained by the conversion through a predetermined interface is disclosed.

Abstract: A satellite signal receiver includes a downconverter, a GPS chip and a transmission controller. The downconverter downconverts satellite signal of digital television into baseband signal for output to the transmission controller. The GPS chip scrambles and encrypts GPS signal into address data and outputs address data to the transmission controller for enabling the transmission controller to convert address data into analog signal for output with the baseband signal to a set-top-box, which converts analog address data into digital GPS signal and compares it with an authorization address carried in the satellite signal and then outputs authorized digital television satellite signal when the comparison is matched.

Abstract: The present invention provides a method for rotating YUV4:2:0 image in a digital display device, such as TV image system. A YUV4:2:0 image is separated to a Y division matrix and a U and V division matrix. Then the Y division is performed a rotation matrix calculation. And the U and V division matrix is performed a reverse rotation matrix calculation. A rotated YUV4:2:0 image is obtained by combining the processed Y division matrix and the processed U and V division matrix.

Abstract: The procedure of the invention acquires a maximum RB value, which is a largest value of an R signal component and a B signal component, on the assumption that the signal format of an input video signal is an RGB signal, and obtains an RGB probability corresponding to a degree of largeness of the maximum RB value. The procedure also acquires a minimum color difference value, which is a smallest value of a color difference signal component, on the assumption that the signal format of the input video signal is a Y/color difference signal, and obtains a color difference probability corresponding to a degree of smallness of the minimum color difference value. The procedure compares the RGB probability with the color difference probability and thereby determines whether the signal format of the input video signal is the RGB signal or the Y/color difference signal. This arrangement effectively enhances the haccuracy of discrimination between the RGB signal and the Y/color difference signal.

Abstract: Methods for choosing and combining colors from a color palette to render an image color tone are disclosed. A set of up to four palette colors are chosen and the weighted factors for combining the chosen palette to render the image color are determined. The weighted factors of the chosen palette colors are ordered according to an ordering criterion or criteria. The color output of a display pixel is the chosen palette color associated with the interval in which the threshold value falls. Color data compression may also be achieved by eliminating at least one color from the set of chosen palette colors used to render an image color that fails to exceed a specified threshold value. Also disclosed are methods for designing uniform and non-uniform color palettes.

Abstract: In a color correcting parameter calculator, a color correcting unit 11 calculates a target color by executing color correction processing of an input color on a reference side while a reference side color perception value calculator unit 13 calculates color perception values of the input color and its target color on the reference side. An object side color perception value calculator unit 15 calculates color perception values of an input color on an object side. A color difference searching unit 16 detects that input color on the reference side which has a minimum color difference with the input color on the object side, by accessing a color perception storage unit 14 for input and target colors for the reference side. A device dependent color unit 17 on the object side calculates device dependent color data of a target color on the object side with reference to perception values of the target color on the reference side while a color correcting parameter calculator 18 calculates color correcting parameters.

Abstract: An optimal pen color is automatically selected for a given background color based upon a predetermined relative distance in the Munsell color-order system. The predetermined distance is defined in terms of saturation, hue and or lightness. In general, sufficient visual distinction is observed when the color representations of the pen and the background are separated by the predetermined relative distance in the Munsell color-order system.

Abstract: A system which utilizes the processing capabilities of the graphics processing unit (GPU) in the graphics controller. Each frame of each video stream or track is decoded into a buffer and a color profile indicating parameters of the color space of the video source is associated with the buffer. The compositor uses the color profile to convert each buffer to a defined working color space from the source color space. This conversion and rendering of the buffer is performed using the fragment processing capabilities of the GPU. The compositor then instructs the GPU to convert the buffer to the final color space of the display device and the frame is rendered to the frame buffer for final display. Each of these operations is done in real time for each frame of the video.

Abstract: This invention presents a YUV to RGB conversion method which preserves high precision of luminance information in an original YUV image signal when converting it to RGB signal. The method can be used to convert the original YUV signal to arbitrary quantization levels in RGB space. In addition, this invention presents methods of pre-quantization and re-quantization as to compensate conventional YUV to RGB color conversion.

Abstract: A video output apparatus including: a video output unit which outputs a video signal while switching the format of the video signal between a first format and a second format for expressing color differently; a mute signal generation unit which generates, as a muting video signal, a specialized video signal expressing a color in which the difference between the color displayed when the specialized video signal is interpreted in its own format and the color displayed when the specialized video signal is interpreted in a different format is a minimum; a selection unit which selects one of the video signal outputted by said video output unit and the mute signal generated by said mute signal generation unit, and outputs the selected signal; and a control unit which causes the selection unit to select the mute signal in a period including the switch performed by the video output unit.

Abstract: An apparatus and a method for adjusting the colors of the on-screen display graphics to match the colors of the video with which the OSD graphics are to be combined. In one aspect, a selected one of a plurality of OSD color palettes (103, 105) is used to produce graphics for a selected one of a plurality of signal sources. As such, the appropriately formatted palette is used to produce graphics for a similarly formatted input signal, i.e., an analog source would be combined with graphics produced from a palette having Y, PI, PQ formatted signals. Consequently, the color compensation matrices would properly compensate both the graphics and the video from each source. In another aspect, a desired one of a plurality of matrices (107, 109) operates on the OSD signal source to match the OSD colorimetry with the input signal colorimetry.

Abstract: A video output device adds a blank on both left and right sides or both upper and lower sides of an input video to produce a video having the same aspect ratio as that of the display screen of the display device, when an aspect ratio of the input video and an aspect ratio of a display device for displaying the video are different. At this time, the brightness of the blank to be added to the input video is adjusted in accordance with the brightness near the boundary between the input video and the blank to suppress a difference in brightness near the boundary.

Abstract: Device and method for converting a format of a video signal in a digital TV receiver is provided. Format conversion can be carried out at one chip of a format converting device, inclusive of conversion of resolution, frame rate, scanning method, aspect ratio, color space, chroma format, and gamma correction. Therefore, the digital TV receiver is made to convert a wide range of video signals inclusive of, not only a digital TV broadcasting signal, but also analog TV broadcasting signal, and computer video signal, at one chip of system block. Moreover, the digital TV receiver is made to provide a variety of standards of format converted video signals, not only to the connected display, but also to other general video signal processing devices.

Abstract: A video input processor is provided to process different input video format, including RGB, RGB Bayer, YUV 4:2:2 interlaced and progressive video data. The video input processor also uses an advanced algorithm to efficiently convert video data in RGB color space to YUV color space. The video input processor further enables multi-functions such as video image scaling, video image filtering before the video data are output for further video compression.

Abstract: A frame memory 105 stores the original image data received from a higher-level device 102 via an interface 103. Color reduction processing means receives color reduction rate data through a transfer from an upper-level device 102 or manual setting means such as a switch or jumper settings. Based on this color reduction rate data, the number of colors in the gradation data of the original image is reduced, and the color count of the original image is simulated using the reduced color count. Also included are a timing generating circuit 106 and a gradation voltage generating circuit 107. A gradation voltage selector 108 performs a partial halting of driver operations based on the color reduction rate.

Abstract: A multiple-format video encoder stores values of the sine and cosine functions in a ROM. According to the externally specified video format, an address calculating circuit calculates the addresses at which to access the ROM. In the multiple-format video encoder, a luminance/color-difference signal generating circuit generates color-difference signals B-Y and R-Y from digital RGB signals. A first multiplying circuit multiplies the color-difference signal B-Y by the values of the sine function stored in the ROM at the addresses specified by the address calculating circuit and multiplies the color-difference signal R-Y by the values of the cosine function stored at the same addresses.