Abstract: A global image adjustment, such as dynamic range adjustment is established based on image characteristics. The image adjustment is based more heavily on pixel values in image areas identified as being important by one or more saliency mapping algorithms. In one application to dynamic range adjustment, a saliency map is applied to create a weighed histogram and a transformation is determined from the weighted histogram. Artifacts typical of local adjustment schemes may be avoided.

Abstract: A system and method for enhanced multi-sample anti-aliasing. The method includes determining a sampling pattern corresponding to a pixel and adjusting the sampling pattern based on a visual effect (e.g., post-processing visual effect). The method further includes accessing a first plurality of samples based on the sampling pattern. The first plurality of samples may comprise a second plurality of samples within the pixel and a third plurality of pixels outside of the pixel. The method further includes performing anti-aliasing filtering of the pixel based on the first plurality of samples and the sampling pattern.

Abstract: A method and an apparatus for brightness-controlling image conversion. The method includes converting an input image of a first non-linear color space into a second linear color space; determining a brightness control ratio; adjusting channels of the second linear color space according to the brightness control ratio; converting the second linear color space into the first non-linear color space to form an output image.

Abstract: The video output system in a computer system reads pixel information from a frame buffer to generate a video output signal. In addition, a full-motion video may also be displayed. Reading from both the frame buffer and the full-motion video buffer when displaying the full-motion video window wastes valuable memory bandwidth. Thus, the disclosed system provides a system and methods for identifying where the video output system must read from the frame buffer and where it must read from the full-motion video buffer while minimizing the amount of area it reads from both the frame buffer and the full-motion video buffer.

Abstract: Provided is an image processing device. A first color space converting unit converts image data in an RGB colorimetric system, which has a color gamut wider than a color gamut of a liquid crystal panel into image data in an XYZ colorimetric system. A three-dimensional nonlinear color gamut converting unit performs conversion on tristimulus values of the XYZ signal. At this time, the image data is classified into four colors and converted respectively such that the first color is displayed in a color accurate to the inputted data, the second color is displayed such that saturation of the second color is increased, the third color is displayed using a color gamut of a predetermined range out of the color gamut of the liquid crystal panel, and the fourth color is displayed in a color corresponding to a boundary of the color gamut of the liquid crystal panel.

Abstract: A color temperature adjusting method of a display device includes follow steps: generating a color temperature curve in CIE 1931 color space according to a color temperature range, a Planckian locus and a CIE daylight locus in the CIE 1931 color space; calculating a target color coordinate at the color temperature curve corresponding to target color temperature; generating a new brightness ratio of red, green and blue, respectively, according to the target color coordinate and tristimulus values of the brightest red, the brightest green and the brightest blue of the display device; generating a coefficient of red, green and blue, respectively, according to the new brightness ratios of red, green and blue and the tristimulus values of red, green and blue; and adjusting the color temperature of the display device according to the coefficients of red, green and blue.

Abstract: A display mode adjusting method and a display mode adjusting module executing the adjusting method are provided. The method includes the following steps: generating a saturation adjusting output color according to an input color to adjust the saturation; obtaining a relative color temperature adjusting parameter according to a target color temperature and an original optical characteristic of a display device; generating a color temperature adjusting output color according to the saturation adjusting output color and the relative color temperature adjusting parameter to adjust the color temperature; obtaining a brightness adjustment value according to the brightness of ambient light to adjust the brightness. Therefore, the display mode of the display device is adjusted to suitable for reading, which avoids the eyestrain when the users read for a long time.

Abstract: An image color adjusting method and an electronic device thereof are provided. The image color adjusting method includes following steps: obtaining multiple groups of first pixel data of an image in a first color space, and performing a color space transforming process for the first pixel data to obtain multiple groups of second pixel data of the image in a CIELAB color space, wherein each of the second pixel data includes a luminance component L*, a first color component a* and a second color component b*; adjusting the first color component and the second color component of the second pixel data to obtain multiple groups of third pixel data, and performing a color space transforming process for the third pixel data to obtain multiple groups of fourth pixel data corresponding to the third pixel data in the first color space.

Abstract: A reprojection system which allows a projection to be displayed onto a display screen, and reprojected by that display screen. The display is received on the surface that itself displays, and it is then redisplayed on the surface. The redisplay can be at the same size or at a different size as the original projection. Preferably the redisplay is at the same relative intensity but a brighter actual intensity than the original display. The information is can be received and redisplayed in a number of different ways.

Abstract: Embodiments provide techniques for adjusting coloration of an image. A visual scene is captured using one or more camera devices, where the visual scene includes a reference object. Embodiments retrieve coloration information corresponding to the reference object. The coloration information generally describes coloration of the reference object under predefined conditions, such as neutral lighting conditions, desired lighting conditions, and so on. Additionally, a coloration difference is calculated between a depiction of the reference object within the captured visual scene and the retrieved coloration information. The coloration of the visual scene is adjusted based on the determined coloration difference.

Abstract: An image projection apparatus that can perform a wall color correction and an ambient light correction obtains a wall color correction parameter by projecting a calibration image for the wall color correction and then obtains an ambient light correction parameter by projecting a calibration image for the ambient light correction, which has been subjected to the wall color correction using the wall color correction parameter.

Abstract: A signal adapting chromacity system to control that may include a signal conversion engine to receive a source signal designating a color of light defined by a two spatial plus luminance dimensional color space, such as the xxY color space. The signal conversion engine may convert the source signal to a three dimensional color space defined within a subset gamut of a full color gamut, such as an RGW, RBW, or GBW color space. The subset gamut may include a first color light, a second color light and a high efficacy light. The signal conversion engine may perform a conversion operation to convert the source signal to an output signal, using the output signal to drive light emitting diodes (LEDs). The conversion operation may be a matrix, angular or linear conversion operation.

Abstract: Disclosed are a display device and a driving method thereof. The display device includes: a first lookup table that stores first color compensation data optimized to display a first color; a second lookup table that stores second color compensation data optimized to display a second color different from the first color; and a color compensating unit that refers to the first lookup table and the second lookup table.

Abstract: Some embodiments provide a program that provides a graphical user interface (GUI). The GUI includes a display area for displaying an image that includes several pixels. Each pixel includes a set of color component values. The GUI includes a waveform monitor for displaying a graph that includes several graphical representations of the several pixels in the image. Each graphical representation is (1) plotted along a first axis of the graph based on a position of a corresponding pixel in the image and (2) plotted along a second axis of the graph based on the set of color component values of the corresponding pixel in the image. A color of each graphical representation is similar to a color of the corresponding pixel that is used for displaying the pixel in the display area.

Abstract: An encoding method and system are disclosed. A processing device receives an image buffer. The processing device converts one or more pixels of the image buffer from a native color space to one or more perceptually uniform color spaces. The processing device multiplies a lightness channel of the one or more pixels by a first value. The processing device multiplies one or more color channels of the one or more pixels by a second value. The processing device converts the image buffer from the one or more perceptually uniform color spaces to the native color space. The processing device transmits the image buffer to a downstream device.

Abstract: A method and system for mapping color gamuts based on one-one and onto mapping function in order to create an invertible transform is disclosed. A hue leaf associated with at least two arbitrary color gamuts can be defined utilizing a vector math function and a most saturated point with respect to each hue leaves can be determined. A safe area relative to an intersection point can be estimated by approximating the most saturated point in both hue leaves. An upper hull and a lower hull associated with the hue leaves can be continuously sub-divided with an equal number of sections by constructing one or more vectors. An appropriate section for computing a vector relationship in the color gamut can be determined in order to map the color gamuts based on the continuous, one-one and onto function thereby creating an invertible transformation.

Abstract: Displays are provided with circuitry performing color correction to compensate for the displays' luminance and chrominance transfer characteristics. Some techniques are suitable for RGBW displays and for subpixel-rendered displays. Some displays include an external light source (e.g. a backlight unit in LCDs), and the color correction is coordinated with dynamic control of the light source.

Abstract: Some embodiments provide a program that performs a color balance operation. The program identifies an image that includes several pixels. Each pixel includes a luma component value and chroma component values. The program analyzes the luma component values of the pixels in the image to identify several luma ranges. The program determines, for each luma range in the several luma ranges, a set of transforms for modifying chroma component values of pixels in the image in order to remove a color cast from the image. The program applies the sets of transforms to the image to remove the color casts from the image.

Abstract: According to one embodiment, a mobile electronic device includes an image projection unit for projecting an image, an image display unit for displaying an image, and a control unit for controlling the image projection unit and the image display unit. When the image projection unit projects an image and the image display unit displays an image, the control unit performs control for making the chromaticity of the image projected by the image projection unit and the chromaticity of the image displayed by the image display unit match each other.

Abstract: Provided is an image processing device which enables image display that takes full advantage of a color reproduction performance of a panel without providing a viewer with a feeling of strangeness. An image processing device includes: a color gamut conversion processor configured to convert inputted data into RGB data according to a liquid crystal panel; a weighting factor calculator configured to calculate a weighting factor; a first post-color-gamut-conversion data weighting processor configured to perform weighting processing to the RGB data; an inputted data weighting processor configured to perform weighting processing to the inputted data; and an output adder configured to add data after the weighting processing to generate RGB data to be supplied to the liquid crystal panel.

Abstract: Systems and techniques are disclosed for applying an effect to a digital image using a cursor. An effect can be applied to an image at a region under a cursor. The cursor has an outer periphery and an effect indicating periphery within the outer periphery. The outer periphery defines a maximum extent to which the effect is applied. The effect indicating periphery indicates how the effect will be applied to the image, such as providing a visual indication of a softness setting.

Abstract: Disclosed are methods and apparatus for color rendering in a binary high-dimensional output device, for example. The methods and apparatus are configured to receive color space data, and then map the received data to an intermediate color space. From this intermediated space, color rendering is performed using a pre-generated number of extended primary colors for temporal modulation. Each of the pre-generated extended primary colors is made up of a combination of at least two subframes with each subframe having a respective primary color. Through use of temporally modulated, pre-generated extended primaries in the color space, the methods and apparatus afford a reduction in the diffusion error for subsequent neighboring pixels yet to be rendered, particularly when using constrained devices such as binary high-dimensional output devices.

Abstract: A color space determination device may include a sampling configuration unit and determination unit. The sampling configuration unit may be configured to determine a sampling ratio and a sampling number based on a resolution of input video data, the sampling ratio being a ratio of a number of the input video data to be sampled to a total number of the input video data included in a frame, the sampling number being a number of frames to be sampled. The determination unit may be configured to receive the input video data in units of frames, to sample the input video data with the sampling ratio for each of the sampling number of frames, and to generate a color space signal representing a color space of the input video data based on the sampled input video data that are sampled from the sampling number of frames of the input video data.

Abstract: A system and method for generating immersive sensation for a two-dimensional still image is provided. The method for generating immersive sensation including: converting a color space of an inputted image; loading a background mask to separate a foreground image and a background image from the inputted image; achieving attribute information for each of the foreground image and the background image, based on a perceptual attribute with respect to the color space, via an image content analysis; predicting scaling parameters based on the attribute information; and enhancing the inputted image based on the scaling parameter.

Abstract: An image processing device generates image data of a projection image displayed on a screen having a color obtained by correcting a color of original data representing an image to be displayed so that the projection image has a desired color. The image processing device includes a storage section adapted to store a spectral reflectivity of the screen, a designation section adapted to designate a type of an outside light in an installation environment of the screen, a correction light determination section adapted to determine a correction light using a spectral distribution of the reflected light obtained based on the spectral reflectivity and a spectral distribution of the outside light, and a color correction section adapted to generate the image data using the original data and data of a spectral distribution of the correction light.

Abstract: A color processing device includes a calculating unit that calculates hues in a device-dependent color space and hues in a device-independent color space of plural reproduction colors that are positioned on an input color gamut boundary and that have different hues, a deriving unit that calculates hues of corresponding colors in which a change in at least one of lightness and chrome caused by color gamut mapping performed in the device-independent color space is smaller than a change caused by the color gamut mapping performed on the reproduction colors, thereby deriving a correspondence between the hues in the device-dependent color space and the hues of the corresponding colors in the device-independent color space, a hue correcting unit that calculates hues in the device-dependent color space from input colors, thereby correcting the input colors, and a color gamut mapping unit that performs the color gamut mapping.

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: Systems and techniques to apply an image distortion to two image objects of different graphic types. In general, in one implementation, the technique includes: receiving an image distortion description to be applied to an image portion including a vector graphic and a raster graphic, the raster graphic being distortable separate from the vector graphic, applying the image distortion description to the vector graphic to produce a distorted vector graphic, and applying the image distortion description to the raster graphic to produce a distorted raster graphic, the distorted vector graphic and the distorted raster graphic together forming a distorted image portion.

Abstract: Method for transforming a first version of a color to be reproduced by a proof viewing device a into a second version of the same color to be reproduced by the same proof viewing device in a way that a first human observer perceives this color reproduced on said proof viewing device according to said second version as this color is perceived on a final color reproduction device by a second human observer having human visual characteristics different from those of the first observer.

Abstract: Provided is a system to assist in designing of color distribution on an object surface while considering the relationship between characteristics of a particle group contained in the paint and the design effect or texture at the object surface achieved by the particle group. The system is configured to calculate and display color distribution in accordance with variation angle at the object surface so as to reflect the texture or design effect at the object surface achieved by the particle group based on the designated distribution mode of the particle group included in the coating layer at the object surface as well as designated shape characteristics and optical characteristics of the particles making up the particle group and based on color distribution in accordance with variation angle at the object surface stored.

Abstract: Systems and methods for performing brush behavior simulation in an image editing application may facilitate realistic paint simulation by the addition of a fill channel to a color space representation that includes a set of color channels and an alpha channel representing opacity of the paint. The fill channel value for each pixel of a brush model or canvas may represent the amount of paint stored at the pixel. The system may include logic to support paint compositing, mixing, and depletion operations that calculate a consequent color of a destination pixel resulting from the operations dependent on the fill channel values for the source and/or destination pixels. The resulting color channel, opacity channel, and fill channel values may be converted to a color space that does not include a fill channel or opacity channel for display. A source pixel may be a pixel of an atomic element of a texture.

Abstract: A display controller is configured for creating a translucency effect for a target image area of a source image containing image data expressed in a first color model. The display controller has a first color model converter adapted for color model transformation of the image data from the first color model to a second color model based upon a first predefined set of transformation coefficients, as well as a second color model converter adapted for color model transformation of the image data from the first color model to the second color model based upon a second predefined set of transformation coefficients. The display controller is controllable to produce a destination image by selecting transformed image data from the second color model converter for the target image area and by selecting transformed image data from the first color model converter for other image area(s) of the source image than the target image area.

Abstract: Color lookup table smoothing employs propagation of a portion of an adjustment of a modified node to an unmodified node of a color lookup table (CLUT).

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: Provided is an image processing device which enables image display that takes full advantage of a color reproduction performance of a panel without providing a viewer with a feeling of strangeness. In at least one embodiment, an image processing device includes: a first color space converter configured to convert an externally transmitted RGB signal into an XYZ signal; a three-dimensional matching processor configured to perform conversion to tristimulus values of the XYZ signal to generate an XYZ signal; and a second color space converter configured to convert the XYZ signal to an RGB signal for a liquid crystal panel.

Abstract: There is provided a color scheme changing apparatus capable of changing a color scheme on a screen immediately depending on the situation so that each piece of information that makes up the screen will always stand out within the entire screen according to the degree of importance thereof.

Abstract: According to an aspect, a display device includes an image display panel on which pixels each including sub-pixels for displaying a first color, a second color, a third color, and a fourth color are arranged, and a signal processing unit that converts an input value of an input signal for an input HSV color space into an output signal for an extended HSV color space. The signal processing unit divides the extended HSV color space into a plurality of spaces, sets limit proportion values different from each other with respect to at least two spaces of the divided spaces respectively, calculates an extension coefficient ? with respect to the input signal by using the input signal and a limit proportion value set with respect to a space according to the input signal, and calculates the output signal based on at least the input signal and the extension coefficient ?.

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: Display systems and image processing methods process pre-subpixel rendered images embedded in input color image data. The display systems include a pre-subpixel rendered (P-SPR) image detector that detects locations of a marking code that marks the portion of the input data that has been pre-subpixel rendered and which is ready for direct display. Several display system embodiments comprise first and second image data paths; the input data that requires subpixel rendering proceeds along the first path while the P-SPR image data proceeds along the second path. Another display system embodiment processes the combined input and P-SPR data along a single data path. Techniques for marking and detecting P-SPR image data using two distinct marking codes are presented in the context of the subpixel layout of the display. Techniques for using P-SPR data to display high-quality graphical symbols (e.g., font glyphs) are suitable for small, low-cost display devices.

Abstract: A method for increasing the perceived quality of a digital image. The method includes receiving a first luminance value associated with a pixel located at a first pixel location in the digital image; generating a second luminance value based on a random number; blending the first luminance value and the second luminance value to generate an output luminance value; and displaying on a display device at the first pixel location or storing in a memory an output pixel having a brightness based on the output luminance value.

Abstract: The method is for identifying and selecting a color or a combination of colors. A color sphere (200) is provided that has a first color pocket (238) defined between a first horizontal disc (202) and a second horizontal disc (208) and vertical inserts (212c, 212b) extending between the first horizontal disc and the second horizontal disc. The first horizontal disc has a plurality of organized first spectrum of color cells and the second horizontal disc has a plurality of organized second spectrum of color cells. The first spectrum is gradually lighter than the second spectrum and gradually more gray from a peripheral surface (209) towards an axial opening (232a) of the first horizontal disc and an axial opening (232b) of the second horizontal discs. A first color cell (236) is identified in a first pocket (238).

Abstract: An image encoding method using color space estimation is provided. A method for encoding a second color space pixel corresponding to coordinates of a first color space pixel using color spaces, includes encoding a pixel of a first color space; calculating a color space estimation value of a current pixel of a second color space by referring to the encoded pixel of the first color space; and encoding a differential value of the calculated color space estimation value and the current pixel value. Thus, the image compression efficiency can be enhanced by using the information between the color spaces in the image encoding, and the lossless image compression can be accomplished by ruling out the similarity of the pixels.

Abstract: Disclosed are various embodiments for facilitating the selection of colors. An initial set of colors from a color space is rendered in a user interface. A selection of at least one of the initial set of colors is received. A subsequent set of colors from the color space is rendered in the user interface in response to the selection. The subsequent set of colors is related to the selected colors.

Abstract: A device includes converters for converting first image data of an RGB-type into second image data of a YCbCr-type, into third image data of the YCbCr-type, and into fourth image data of the RGB-type, wherein a CbCr-coordinate system has six regions defined by coordinates of a reference color and of six primary colors, and when coordinates of the second image data are located in a region defined by coordinates of the reference color, a first primary color, and a second primary color, the coordinates of the second image data are determined by the coordinates of the reference color, the first primary color, the second primary color, coordinates of a target reference color corresponding to those of the reference color, coordinates of a first target primary color corresponding to those of the first primary color, and coordinates of a second target primary color corresponding to those of the second primary color.

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: Disclosed is a method of rendering a radial gradient blend defined by a gradient function. The method identifies respective first and second radial limits for a point of the radial gradient blend, the respective first and second radial limits having known blend values and receives an estimated value of the gradient function for the point. The method determines a direction from the estimated value to an ideal value, wherein the ideal value is a value of the gradient function for the point and modifies the estimated value, based on the direction of the ideal value. The method checks the ideal value is within a predetermined threshold of the estimated value and stores a determined blend value for the point by interpolating between the known blend values of the respective first and second radial limits on the basis of the modified estimated value of the gradient function, to render the radial gradient blend.

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 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: In a first embodiment, a display system comprises a display panel with 4 or more colored subpixels. The display system receives input image data specified in a first color space and outputs image data specified in a second color space. The display system further comprises a gamut mapping module for mapping the input image data specified in the first color space to image data specified in the second color space. The gamut mapping module clamps out-of-gamut colors using at least a first clamping system and a second clamping system. The first and second clamping systems yield first and second clamped values. A weighting module produces a resulting clamped value from the first and second clamped values. A final output image value is derived from the resulting clamped value. Other embodiments of the display system include pre-reduction modules and adjustable GMA modules.