Abstract: Several embodiments of display systems that have wide color gamut performance are disclosed herein. In one embodiment, a display system comprises a plurality of emitters, said emitters emanating light into an optical path; a first modulator, said first modulator comprising a plurality of colored subpixels and wherein said first modulator transmitting light emanating from said emitters in said optical path; and a color notch filter, said color notch filter placed in said optical path for conditioning or convolving light together with said first modulator.

Abstract: A display pipe may include a video pipe outputting pixels of a video stream in a first color space, e.g. YCbCr color space. The display pipe may also include a first color space converter to convert the output pixels to a second color space, e.g. to RGB color space, producing a conversion output in which some of the converted output pixels have values that are invalid pixel values in the second color space. The display pipe may also include a blend unit that performs blending operations in the second color space on the converted output pixels to produce a blended conversion output that includes blended pixels in the second color space. A second color space converter in the display pipe may convert the blended pixels from the second color space to the first color space, and correctly display the converted blended pixels on a display screen.

Abstract: A gamut mapping method and system for implementing out-of-gamut spot color reproduction, including a memory for electronically storing information related to at least one color gamut and a gamut mapping editor including a processor communicating with the memory, the processor of the gamut mapping editor (i) causing a user to be apprised that a target spot color is outside the at least one color gamut and (ii) facilitating the user's employment of one or more of a plurality of gamut mapping methodologies to select a preferred color from a plurality of mapped colors when the target spot color is outside the at least one color gamut.

Abstract: Output image data for display on a target display having a target gamut is generated from first and second input image data. The first and second input image data may be color timed for display on different types of display. Chromaticity values in the output image data may be generated by interpolation using an interpolation parameter derived from the target gamut and gamuts associated with the first and second image data.

Abstract: System and methods are provided for performing saturation adjustment of one or more pixels. In one embodiment, an input color value of a pixel is received. The input color value includes an input saturation component. An adjusted color value is extracted from a predetermined look-up table that maps the input color value to the adjusted color value, the adjusted color value having an adjusted saturation component that is different from the input saturation component. The adjusted color value is output.

Abstract: A method of producing a color image comprising providing input image data from an image source such as a camera; generating an at least three-dimensional look-up table of values of input colors and output colors, wherein the values in the lookup table convert the input image color data to output image color data in an image rendering unit; loading the at least three-dimensional look-up table into an image color rendering controller; loading the input image data into the imaging color rendering controller; processing the input image data through the at least three-dimensional look-up table to produce output color values stored at the addresses in the at least three-dimensional look-up table; and outputting the output color values to the image rendering unit to produce an output image that is perceived to have at least one of enhanced brightness, enhanced contrast, or enhanced colorfulness compared to the input image.

Abstract: An adjusting method includes steps of providing a display apparatus, transforming a first value in a first color space of a color displayed by the display apparatus into a second value in a second color space, adjusting the second value to a third value in the second color space, and transforming the third value into a fourth value in the first color space. By adjusting the second value to the third value in the second color space intuitively, the present invention achieves the advantages of providing an intuitive operation, simplifying the adjustment, saving time and enhancing the user experiences.

Abstract: A image processing method converts an input signal to a first image signal of a first color gamut, converts a second color gamut to a second image signal for expression in an image output device having the first color gamut, determines a blend coefficient for defining a synthesis ratio of the first and second image signals, and synthesizes the first and second image signals using a ratio based on the blend coefficient to generate a synthesis image signal. The blend coefficient may be based on a value V and a saturation S obtained from the input signal. A color synthesis unit synthesizes the first and second image signals using a ratio according to the determined blend coefficient.

Abstract: Methods, chips, systems, computer program products and data structures are described for conducting modification of color video signals from a first color format associated with an originating format to a second format compatible with a display media of a display device.

Abstract: A method that incorporates teachings of the present disclosure may include, for example, the steps of transmitting media content to a group of set top boxes for presentation with an overlay superimposed onto the media content, receiving a first comment from a first set top box of the group of set top boxes where the first comment is presentable with the overlay and the media content by the group of set top boxes, determining a first advertisement based on the first comment, and transmitting the first advertisement to the first set top box for presentation with the overlay and the media content. Other embodiments are disclosed.

Abstract: Various system embodiments comprise a substrate of high thermal conductivity, a solid state light emitting device, an electric circuit, and an electric dielectric. The device has a die and a connection point to the die with a low thermal resistance. The connection point is in contact with the substrate. The electric circuit is electrically connected to the light emitting device, and separated from the substrate by the electrical dielectric. Various system embodiments comprise at least four color sources; and a controller configured to calculate a solution to form a target color using the color sources when the target is outside of a gamut formed by the color sources. The controller is configured to find an equivalent target color with reduced saturation.

Abstract: A method and apparatus for color matching during compositing. In one embodiment of the invention, a set of one or more un-color matched pixels are stored and associated with a first color profile. A fragment program is generated based on the first color profile and a second color profile associated with a display. During compositing of the set of un-color matched pixels, the fragment program is applied to the set of un-color matched pixels to match colors of those pixels with the display. The color matched pixels are written to the display. Other methods and apparatuses are also described.

Abstract: This invention is a universal gamut mapping and color management method and relates to color digital image processing technical field. It involves high-accuracy image coordinates conversion in device color space, high fidelity chroma transmission between input and output devices, cross-media gamut mapping technologies and color management system built based on these technologies. This invention is accurate, efficient and versatile. It can be widely used in image processing hardware manufacture and software design for image transmission and receiving devices such as computer, digital TV, digital image displays, digital video camera and television camera, etc.

Abstract: A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.

Abstract: The present invention provides a color adjustment device, a method of adjusting color and a display device for the same. It measures a plurality of tristimulus sets at various white grayscales on a LCD panel, converts the multiple tristimulus sets into a plurality of chromatic sets (xn, yn). Among the plurality of chromatic sets (xn, yn), it recognizes the Pth chromatic set (xp, yp), the break point, and based on the pth chromatic set (xp, yp), determines a plurality of target chromatic sets (Nxn, Nyn) at from the grayscale 0 to the grayscale p, where Nx n = x 0 + ( x 255 - x 0 ) · [ 1 - exp ? ( 1 - p n ) ] , ? Ny n = y 0 + ( y 255 - y 0 ) · [ 1 - exp ? ( 1 - p n ) ] . By this method, an exponential function instead of a linear function is adopted to depict the chromatic variation at low grayscales. Thus the grayscale variation appears more smooth and without any obvious break point in human's perception.

Abstract: The invention relates to color selection input, for example by means of a color selection wheel or pad, particularly for a lighting system. The invention provides color selection means (10) representing selectable colors in terms of hue gradation (12) along a direction thereof, wherein the hue gradation is adapted to user preferences in that the hue gradation is divided into non-equal segments (20, 22) with segments of user preferred hue (20) larger than segments of non user preferred hue (22). The invention has the main advantage that the input of a color selection may be better adapted to user preferences.

Abstract: The disclosed embodiments provide a system that drives a first display and a second display mirrored to the first display from a computer system. During operation, the system obtains a framebuffer update for a first framebuffer associated with the first display. Next, the system performs a color-correction operation on the framebuffer update to obtain a color-corrected framebuffer update that enables color output from the second display to substantially match color output from the first display. Finally, the system uses the framebuffer update to drive the first display, and uses the color-corrected framebuffer update to drive the second display.

Abstract: A color image enhancement method, for enhancing the color of a color image comprising a plurality of pixels. The method comprises: mapping a color saturation value of each pixel to a normalized saturation value, wherein the range of values of normalized saturation is the same independent of the luminance value of the pixel; estimating a probability distribution of the normalized saturation values; defining a transfer function for modifying the normalized saturation values, based on the estimated probability distribution; and applying the transfer function to the normalized saturation values to generate modified values.

Abstract: A color conversion table creating device for creating a color conversion table for converting first color data defined in a first color space to second color data defined in a second color space different from the first color space, includes a first data acquiring unit, a reference value determining unit, a lightness judging unit, a third data determining unit, and a creating unit. The first data acquiring unit is configured to acquire a plurality of sets of first data defined in the first color space. The first data sets are determined by measuring test patches each corresponding to a set of second data defined in the second color space. The first data sets include a set of black color data corresponding to data representing black in the second color space. Each first data set has a lightness value. The reference value determining unit is configured to determine a reference value based on a lightness value of the black color data set.

Abstract: A color gamut converting device includes a target display processor converting an RGB signal of a target display into a tristimulus value XYZ according to a color gamut of the target display, and a reference display processor calculating an R?G?B? signal of a reference display representing the same tristimulus value XYZ as the tristimulus value XYZ, wherein the reference display is a display reproducing a color to be displayed according to the RGB signal in the target display according to the R?G?B? signal.

Abstract: The color gamut of display devices like digital projectors and digital displays is expanded by incorporating additional passband filters into the optical path of the devices to produce presentations of color components in two different color gamuts. The composite visual effect of the two presentations is a presentation in an expanded color gamut. Special considerations in the modulation of color components of the image can reduce variations in color and brightness, which can otherwise manifest themselves as flicker.

Abstract: Systems, apparatus, articles, and methods are described including operations for color enhancement via gamut expansion.

Abstract: An exemplary embodiment of method of establishing a gamma table using a system includes following steps. Providing a signal generator, a display device, and a color analyzer, consists of measuring luminance values of the images corresponding to a plurality of reference sampling points. Obtaining a luminance characteristic curve based on the reference sampling points and luminance values using Bezier curve interpolation. Locating the gray scales on the luminance characteristic curve with the same luminance values as the gray scales of a standard gamma table. And establishing a gamma table by comparing the gray scales of the standard gamma curve and the luminance characteristic curve.

Abstract: According to one embodiment, a video processing device includes: an operator configured to accept a gain adjustment value with respect to at least any one of an R signal, a G signal, and a B signal of a video signal from a user; a gain adjuster configured to obtain a gain by using a white balance adjustment value and the gain adjustment value with respect to each of the R, G, and B signals; a determiner configured to determine whether any of the gain of the R signal, the gain of the G signal, and the gain of the B signal is equal to or greater than 1; and a processor configured to decrease the gain when any of the gain of the R signal, the gain of the G signal, and the gain of the B signal is equal to or greater than 1.

Abstract: An information processing device, configured to perform color gamut conversion for compressing or enlarging the color gamut of image data, includes: a selecting unit configured to select a plurality of coordinate movement directions to be synthesized for determining the coordinate movement destination of a pixel to be processed during the color gamut conversion; a coordinate moving unit configured to move the coordinates of the pixel to be processed in each of the selected plurality of directions; and a synthesizing unit configured to synthesize coordinate movement in the selected plurality of directions.

Abstract: A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel.

Abstract: This invention provides an image processing device and an image processing method capable of generating synthetic image data containing effective image information without being influenced by the variation of the photographing environment. A correcting portion updates (shifts) a “brightness” upper and lower limit range according to a deviation ?E received from a deviation calculating portion. The correcting portion accepts an initial value Emax0 of the “brightness” upper limit and an initial value Emin0 of the lower limit in advance, so that the “brightness” upper limit and lower limit after update is (Emax0+?E) and (Emin0+?E), respectively. The “brightness” upper and lower limit range after the update calculated by the correcting portion is provided to a tone mapping unit.

Abstract: Disclosed is a method and system for automatically testing a raster image processor. The method may identify the correctness of the bitmap output by the raster image processor to be tested by comparing an abstract code of a bitmap generated by the RIP to be tested with that generated by a reference RIP to determine whether they are consistent with each other, so as to identify the correctness and stability of the RIP to be tested. Furthermore, the test samples can be submitted automatically. Thus, the convenience and efficiency are improved with respect to the manual submitting.

Abstract: A method, apparatus and system for assessing color characterization quality includes a characterization unit configured for determining at least one of a forward and inverse transform from a first set of device dependent input color values and measured output display values of the first set of device dependent input color values on the display and transforming a second set of device dependent input color values using the determined at least one of a forward and inverse transform to provide an intermediate set of device dependent input color values. The method, apparatus and system further includes a verification unit for performing at least one of a forward transform quality evaluation and an inverse transform quality evaluation.

Abstract: An image display device is disclosed. The image display includes a quantizer, a halftone processing module, and a gamut mapping module. The quantizer is configured for executing a quantization process to an input image to generate a quantized image. The halftone processing module is configured for executing a halftone process for operating a quantization error between the input image and the quantized image to generate a dithering matrix. The gamut mapping module is configured for executing a gamut mapping process for operating the quantized image and the dithering matrix to generate an output image.

Abstract: A method includes querying, through a processor, a database of color profiles to determine a secondary color profile therefrom, and comparing, through the processor, the determined secondary color profile to a primary color profile of a primary display communicatively coupled to the processor. The method also includes selecting, through the processor, the determined secondary color profile to be applied to a secondary display also communicatively coupled to the processor upon determining that multimedia content displayed on the primary display with the primary color profile matches with the same multimedia content displayed on the secondary display with the determined secondary color profile. Further, the method includes reducing a color discrepancy between the same multimedia content on the primary display and the secondary display based on rendering the same multimedia content on the primary display with the primary color profile and the secondary display with the selected secondary color profile.

Abstract: Color management which converts source device colors into counterpart colors in a destination device color space. Device independent source and destination device gamut boundaries are obtained. A color image is generated in the source device color space. The color image is transformed into an image in a device independent color space. A gamut boundary for the device independent image is generated, based on the content of the device independent image. The source device gamut boundary is shrunk in a hue symmetric manner, such that color hues do not change, until it touches the image gamut boundary. Colors of the device independent image are mapped onto a gamut of the destination device by invoking a compression-type gamut mapping algorithm that uses the modified source device gamut boundary and the destination device gamut boundary to perform gamut mapping. The gamut mapped colors are converted into colors in destination device dependent color space.

Abstract: Improved methods are provided for calibrating color on a color display coupled to a computer, which are useful for obtaining calibrated data in a virtual proof network for enabling different color devices to render consistent color. Methods involve user interactions with screens on the display to set color display parameters. An apparatus is also provided for calibrating a sensor which may be used for measuring color of a display in one or more of these methods.

Abstract: A color gamut boundary information generating device includes a mapping unit, a triangulating unit, and a generating unit. The mapping unit maps boundary points existing at plural coordinates in a color space that is independent of an output device to corresponding points in a two-dimensional region while maintaining respective phases of the boundary points. The triangulating unit performs triangulation on the inside of a convex hull including plural points in the two-dimensional region obtained by the mapping unit, thereby generating triangulation information, which is a result of the triangulation. The generating unit generates color gamut boundary information on the basis of the triangulation information generated by the triangulating unit. The color gamut boundary information is information that specifies a three-dimensional shape in the color space, the three-dimensional shape having a boundary including the boundary points.

Abstract: Respective video feeds are provided to at least two viewers using a common display. The display is controlled to simultaneously display an image from a first video feed and an image from a second video feed. The image from the first video feed is displayed within a first wavelength band and the image from the second video feed is displayed within a second wavelength band, and the first and second wavelength bands are distinct. A first filter is selective for transmitting the first wavelength band and not transmitting the second wavelength band. A second filter is selective for transmitting the second wavelength band and not transmitting the first wavelength band. Only the first video feed image is provided to a first viewer using the first filter, and only the second video feed image is provided to a second viewer using the second filter.

Abstract: Techniques are described that can be used to provide color space conversion for images and video to a display color gamut space. Some techniques provide for accessing an sRGB gamut color table, determining a color conversion matrix based on the sRGB gamut color table and chromaticity values of RGBW primary and gamma stored in the display or associated with the display, applying color space conversion to the pixels for pixels using the color conversion matrix, and applying linear correction of pixels by applying a normalization factor to the color conversion matrix. In addition, some techniques provide analysis of content gamut with respect to display gamut in HSV space, adjustment in HSV space, and conversion back to RGB space before applying color space conversion.

Abstract: A color accurate display device is configured to receive an encoded first color space having a first gamut from a set of encoded primaries {R, G, B} and a first white point. The device includes a display panel having an active area configured for an encoded second color space having a second white point and a set of native primaries each with a characterized tone response with respect to the second color space and a measured tone response from the display panel, the primaries having a second gamut larger than and including the first gamut. Also included is a color space conversion circuit configured to convert the set of encoded primaries {R, G, B} and first white point of the first color space to the set of native primaries and second white point compensating for each characterized tone response of the second color space.

Abstract: In order to perform pseudo-three-dimensional display for analyzing color distribution, there are provided a color-distribution-information input step of inputting color-distribution information indicating color coordinate values that sample points in a first color system can have in a second color system, a user's-instruction input step of inputting an instruction of a user relating to an operation of generating object-surface information, and a generation step of generating three-dimensional-object-surface information in accordance with the instruction of the user, based on the color-distribution information.

Abstract: Provided is a display device including: a data processor controlling color reproducibility of RGB data under a low illumination environment to process an input image signal; a signal controller dividing the input image signal in a frame unit according to a vertical synchronization signal and the input image signal in a scan line unit according to a horizontal synchronization signal to generate an image data signal; and a data driver receiving the image data signal to transfer a plurality of data signals to each of the plurality of data lines coupled to a plurality of pixels. The display device reduces glaring and provides a higher-definition image to a user due to the accurate representation of neutral white under the high illumination environment.

Abstract: The described embodiments provide a system that facilitates a switch from using a first graphics-processing unit (GPU) to using a second GPU to drive a display. During operation, upon generation of a request to switch from using the first GPU to using the second GPU as a signal source for driving the display, the system obtains a transform (such as a lookup table) that enables the displayed color output from the second GPU to substantially match the displayed color output from the first GPU. The system then makes the transform available for use by the second GPU in driving the display.

Abstract: A method for transformation of color values of an initial color space reproducible by a first technical device to color values of a target color space reproducible by a second technical device is provided. The method includes movement from one color space by conversion of color values to different color values in the basic color space and scaling by conversion to different color values in the basic color space. The method also includes conversion of color values of the initial color space to color values which are closest to the color value in the edge area of the target color space. The method also includes movement of color values located in an edge area of the target color space to the interior of the target color space by conversion as a function of the number of identical edge color values to color values on the same color variation plane.

Abstract: A gamut converting device that applies gamut conversion to image data includes a signal converting unit that performs, when a negative value is included in an image signal value forming the image data, processing for converting the image signal value forming the image data to eliminate the negative value from the image signal value and a gamut converting unit that applies the gamut conversion to the image data, the image signal value of which is converted by the signal converting unit.

Abstract: A device for mapping a color gamut includes a color gamut determinator and a color gamut mapper. The color gamut determinator determines an output color gamut using a gain value corresponding to information of a first color gamut, information of a second color gamut and a control condition. The color gamut mapper converts the color gamut of an input image data into the output color gamut. Accordingly, it is possible to provide a device and method for mapping a color gamut, which can determine an optimal color gamut corresponding to a change in control condition, and accordingly improve color accuracy and color reproducibility.

Abstract: A color display system providing reduced observer metameric failure for a set of target observers, comprising an image forming system having narrow-band primaries. A data processing system is used to implement a method for color correcting an input color image having input color values adapted for display on a reference display device having a plurality of input color primaries. A metamerism correction transform is applied to the input color image to determine an output color image having output color values in an output color space appropriate for display on the image forming system. The metamerism correction transform modifies colorimetry associated with the input colors to provide output color values such that an average observer metameric failure is reduced for a distribution of target observers.

Abstract: Color calibration of color image rendering devices, such as large color displays, which operate by either projection or emission of images, utilize internal color measurement instrument or external color measurement modules locatable on a wall or speaker. A dual use camera is provided for a portable or laptop computer, or a cellular phone, handset, personal digital assistant or other handheld device with a digital camera, in which one of the camera or a display is movable with respect to the other to enable the camera in a first mode to capture images of the display for enabling calibration of the display, and in a second mode for capturing image other than of the display. The displays may represent rendering devices for enabling virtual proofing in a network, or may be part of stand-alone systems and apparatuses for color calibration.

Abstract: Method of mapping source colors from a source color device having an actual source gamut that is represented by a source convex (gamut boundary descriptor) and a source non-convex into target colors for a target color device having an actual target gamut that is represented by a target convex and a target non-convex, comprising, 1—if the source color to map is located outside the source non-convex, a pre-mapping step that maps the source color into the source non-convex, 2—if the mapped target color is located outside the target non-convex, a post-mapping step that maps the target color into the target non-convex. This method allows precise gamut mapping while allowing also for simple geometrical operations using convex gamuts.

Abstract: The present invention is a calibration apparatus comprising a calibration unit configured to perform calibration for an image display apparatus; an acquiring unit configured to acquire a color deviation direction that represents a direction of deviation in a color space between a color measurement value and a theoretical value, for each of color patches of a plurality of colors after executing the calibration; and a control unit configured to determine degrees of similarity of the color deviation directions in relation to the color patches of at least some of the plurality of colors included in the plurality of colors and control whether or not the calibration unit is allowed to perform the calibration for the image display apparatus again, on the basis of a result of the determination.

Abstract: A display device includes a reference storage unit which stores a reference value of color gamut resulting from a reference color sensor measuring primary colors displayed on the screen; a difference calculation part which calculates a difference between the reference value of color gamut stored in the reference value storage unit and the measured value of color gamut resulting from a correcting color sensor measuring primary colors displayed on the screen; and an output part which outputs an alert to notify an abnormality of the correcting color sensor when the difference between the measured value of color gamut and the reference value of color gamut becomes equal to or greater than a predetermined threshold.

Abstract: The invention is characterized by the fact that an area sensor for outputting an analog signal responsive to the light reception amount of light of CMYG is used and when CMYG image data is converted into RGB image data, RGB image data having a domain also in negative values is generated without performing processing of putting the RGB image data into values of 0 or more, without decreasing the information amount of the CMYG image data. Further, the invention is characterized by the fact that when the image data is recorded in a file section 16 finally as a JPEG file, the pixel data of each color of YCbCr is represented as data type of eight bits and the information amount per pixel is 24 bits for recording more color information without increasing the memory capacity.

Abstract: An image processing apparatus of the present invention includes a color matching section for performing, on monochrome or two-color image data to be supplied to an image display device, a color matching process of reducing differences in color from a single- or two-color image to be outputted by an image display device, and as such, can display a comfortable preview of a single- or two-color image data by reducing differences in color between an image to be previewed and an image to be actually printed.