Abstract: A system for optimizing display colors of a digital light processing projector includes a color analyzer, and a central processing module. The color analyzer is configured for detecting a first image produced by the projector to obtain actual brightness proportions of red, green, and blue light components associated with the first image, and obtaining a color coordinate of the first image at the actual brightness proportions. The central processing module is configured for adjusting the actual brightness proportions to pre-set brightness proportions to form a second image. The color analyzer detects the second image to obtain a color coordinate thereof. The central processing module adjusts the color coordinate of the second image to a pre-set standard color coordinate, and changes the first gamma curve of the projector to a second gamma curve according to the adjusted color coordinate of the second image.

Abstract: A method and apparatus for performing color plane adjustment are provided. In one embodiment, an apparatus comprises a set of inputs for receiving a first input value and a second input value in a color space. The apparatus also comprises a color plane adjustment component operative to adjust the first input value and the second input value by amounts that depend on a distance of the first input value and second input value, respectively, from a value of neutral gray in the color space. The apparatus further comprises a set of outputs for outputting the adjusted first and second values. A related method and computer program are disclosed. Other embodiments are disclosed, and each of the embodiments can be used alone or together in combination.

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: Stereoscopic color management of images with plural views. Image data for each view is defined in a component input device color space. Image data in the component input device color spaces is converted to a nominal source color space using plural input transforms each corresponding to one of the plural views. A rendering transform is used to convert image data for each view in the nominal source color space to a nominal destination color space. The nominal source color space, nominal destination color space and rendering transform are the same for all views. The image data for each view in the nominal destination color space is ultimately converted to a component output device color space associated with a stereoscopic output device respective of the view using a respective output transform.

Abstract: In a method of managing color output by appearance intent a color display value is received. The color display value comprises at least one appearance intent tag and is associated with an item of graphic content. The color display value is converted into an intermediate color value such that an appearance intent specified by the appearance intent tag is preserved in the intermediate color value. The intermediate color value is converted into an output color display value recognizable by an output device, such that the appearance intent is preserved in the output color display value.

Abstract: An improved gamut map model (GMM) useful in conjunction with Windows Color System (WCS). The method uses the WCS Minimum Color Difference (MinCD) GMM to handle gamut mapping for the Saturation rendering intent at low input chroma values. For input values to the gamut map model profile (GMMP), if the chroma value C falls within a predetermined chroma value range, the MinCD GMM will be applied, otherwise the Hue Mapping GMM is applied. The predetermined chroma value range can be determined by experimentation. The range is 0?C?10 in a preferred embodiment. This method will improve the gradation fidelity of the rendered images and reduce or prevent major hue shifts at low chroma values. The method may be implemented as a plug-in utility for a computer.

Abstract: A pixel processor employing an image processing technology by a computer capable of enhancing color identity. The pixel processor comprises a means performing color vision conversion processing for varying the component in the luminance axis direction depending on the component in the selected axis, i.e. any one of first axis and second axis, out of the component in the luminance axis direction, the component in the first axis direction and the component in the second axis direction included in pixel data represented as positional data in a uniform color space defined by three orthogonal coordinate axes system of the luminance axis indicating luminance, and the first and second axes indicating chromaticness index.

Abstract: A method of converting an input color codeword from a first color format to a second color format comprises providing a reference format having reference bit positions and comparing the first bit positions associated with the first color format to the reference bit positions. Second bit positions associated with the second color format are compared to the reference bit positions. The relative bit position shifts based on the compared first bit positions and the compared second bit positions are determined. Format conversion bit masks are then generated based on the first and second color formats and the determined relative bit position shifts. The input color codeword is converted to the second color format based on the format conversion bit masks and the relative bit position shifts.

Abstract: The invention is directed at least in part to a method of illuminating an imager for projecting images, implementing light-emitting diodes of different colors, the diodes being designed to provide a beam illuminating the imager. According to various embodiments of the invention, for a set of at least one imager, the method includes receiving each image of the set; determining a color base dependent on the set of at least one image, called a secondary color base; and dynamically controlling the diodes according to the secondary color base. The invention also relates to a system implementing the method and a projector comprising such a system.

Abstract: In an image processing apparatus of the present invention, interpolation operations are performed with a LUT to obtain CMY image data corresponding to input RGB image data. The image processing apparatus includes a gamut selecting section for selecting a gamut corresponding to an inputted image, from an RGB color space, based on input RGB image data; a LUT writing section for changing CMY image data in the LUT to CMY image data corresponding to grid points contained in the selected gamut; and a position information changing section for writing position information in a memory, wherein the position information indicates RGB color space positions of the grid points contained in the selected gamut. Thus, the image processing apparatus of the present invention can save memory space.

Abstract: Color is edited using a color representation including digital values B (brightness), e and f such that B=?{square root over (D2+E2+F2)}, e=E/B; f=F/B, where DEF is a linear color coordinate system. Alternatively, color is represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. Brightness can be changed without a color shift by changing the B coordinate and leaving unchanged the other coordinates e and f or C and H. Other features are also provided. Brightness coding methods are provided to reduced the size of image data for storage and/or network transmission. The coding methods include logarithmic coding. Some embodiments use logarithmic or linear coding depending on the brightness at a particular pixel.

Abstract: A facility for adapting a subject color to be compatible with a basis color is described. The facility accesses a color transformation specification that specifies how the subject color is to be adapted to be compatible with the basis color. The facility then applies the accessed color transformation specification to the subject color to adapt the subject color to be compatible with the basis color.

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: 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: If an image reproducing apparatus has a device-dependent color space conversion function that converts the color space of processing target image data to a device-dependent color space using a particular color space, (i) reproduction image data is generated by carrying out basic color space conversion to image data for which the color space specified by color space identification information is the standard color space, and (ii) reproduction image data is generated by carrying out device-dependent color space conversion to image data for which the specified color space is the particular color space.

Abstract: Disclosed embodiments relate to techniques for color gamut mapping when an input signal transmitting color visual images has a different color gamut than does the output display device. Polynomial rubber-sheet mapping may be used to translate the input color gamut to the output color gamut on a hue-by-hue basis within a three-dimensional perceptual color space. Also, a memory color look-up table may be used to preserve memory colors in the input gamut which are capable of reproduction within the output gamut. By using such techniques alone or in combination, it may be possible to more effectively map an input color gamut to a different output color gamut with improved calorimetric accuracy.

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.

Abstract: Methods and systems in an image processing device for controlling colors that are located external to a gamut are disclosed. A plurality of color values can be automatically provided as input to said image processing device, wherein said image processing device is under a control of a particular dimensional order, typically a three-dimensional order, but alternatively can be a two-dimensional order. Next, an operation can be performed dynamically determining which color value among the plurality of color values has attained a gamut limit. Thereafter, the particular dimensional order can be automatically reduced, thereby providing improved control for colors that are located external to said gamut. The plurality of color values analyzed is generally associated with three colors—cyan, magenta, and yellow.

Abstract: A method for reproducing an image on an imaging device, including measuring a set of spectral data for each of a plurality of colors from a set of color device values with a spectral measurement device; determining a first set of tristimulus values corresponding to each set of spectral data; defining a set of human observer color matching functions for each set of tristimulus values; determining a second set of tristimulus values for each set of spectral data using the human observer color matching functions; creating a first map from device-dependent coordinates to device-independent color coordinates; creating a second map from device-independent coordinates to device-dependent color coordinates based on the first map; obtaining image data comprising device-independent color coordinates; converting the image data coordinates into device color coordinates; and reproducing the image on the color device using the device color coordinates.

Abstract: A method for characterizing the color response of an imaging device, the method includes reproducing a color on the imaging device based on a set of device color coordinates; measuring spectral values for the reproduced color with a spectral measurement device controlled by a digital processing system; calculating a first set of tristimulus values from the spectral values; defining a set of human observer color matching functions, the set of human observer color matching functions being functions of the first set of tristimulus values of the reproduced color; calculating a second set of tristimulus values from the spectral values using the defined set of human observer color matching functions; and associating the reproduced device color coordinate with the second set of tristimulus values.

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: The present invention relates to an image processing method of a pointer input system. In the image processing method, a color channel image is generated from an image pickup device, so that image processing capability, the image processing efficiency and the data transmitting speed of the pointer input system are enhanced.

Abstract: A method performed by one or more computers programmed to enhance images, the method including receiving an image and a face region associated with the image, sampling pixels from the face region, generating, based on the sampled pixels, a face-region evaluation, identifying a modification to the image based on the face-region evaluation, and modifying the image in accordance with the identified modification.

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: Implementation of color matching with a high accuracy between a device of luminous type and a device of non-luminous type is demanded. Hence, a combination of the device type of a source device and the device type of a destination device is discriminated. If a device of luminous type and a device of non-luminous type are combined, colorimetric values of the device of non-luminous type measured by a contact colorimeter into those of a non-contact colorimeter, and color conversion in accordance with a predetermined color matching method is performed using colorimetric values of the device of luminous type measured by the contact colorimeter and the transformed colorimetric values of the device of non-luminous type.

Abstract: One embodiment of the present invention provides a system that generates a set of color-toning curves which can be used for color toning (or casting) a monochrome or color image. During operation, the system receives a first set of color-toning parameters for shadow regions, a second set of color-toning parameters for highlight regions, and an invariance property which needs to be maintained during color toning. The color-toning parameters specify the color that is to be applied to the shadows and highlights. Next, the system computes a set of color-toning-curve values and a set of color-toning-curve slopes using the first set of color-toning parameters, the second set of color-toning parameters, and the invariance property. The system then generates the set of color-toning curves using the set of color-toning-curve values and the set of color-toning-curve slopes.

Abstract: In order to provide a method for transformation of an initial colour space to a target colour space in which, in particular, detail losses and contrast losses are minimized, the present invention proposes a method for transformation of colour values from a an initial colour space to a target colour space, both of which are related to a defined basic colour space, in which case at least one plane in the colour spaces define a profile of the brightness from bright to dark, and planes running transversely thereto define colour variations, characterized by the following steps a) movement from the initial colour space and/or the target colour space by conversion of all the colour values of one of the two colour spaces to different colour values in the basic colour space, so that the initial and the target colour space are coincident with respect to at least one colour value located at the edge of a colour space, b) scaling of the initial colour space and/or target colour space by conversion of all the colour value

Abstract: The fact that B and R are close to a U axis and to a V axis, respectively, is noted. On that basis, from an example of color adjustment parameters set in directions of colors, it is found out that, when inputted V is in a negative range, B has a small influence. Accordingly, a B component is omitted from calculation in order to reduce a calculation amount. Similarly, components having small influences are omitted when B is in a positive range, when U is in the positive range, and when U is in the negative range. Thereby, adjustment parameters AR, AG, and AB set in directions shown in the drawing can be defined. When inputted V is in the positive range, a V component can be adjusted by multiplying AR by the inputted V. Similar processing is performed when inputted V is in the negative range, when U is in the positive range, and when U is the negative range, respectively.

Abstract: Aspects of the present invention relate to methods and systems for determining output responses and device targets for multi-colorant output devices. Some aspects relate to methods and systems for multi-dimensional rectilinear sampling, transformation of samples from an unlimited colorant space to a colorant-limited space, obtaining additional samples within a colorant-limitation hyperplane and interpolation of values in a colorant-limited space.

Abstract: A dental color system having primary and mixed colors with assigned coordinates in the CIElab color space, in which the colors of natural teeth are essentially located on coordinates within an ellipsoid-shaped space, which is assigned a longitudinal axis.

Abstract: Systems and methods are provided for processing at least one document comprising color data. Color data in the document in a first color space is inspected to determine if a color space conversion operation for a portion of the color data is specified using a color space dictionary or a transformation matrix, wherein the color space conversion operation converts the color data from the first color space to an intermediate standard color space. An input profile corresponding to the color conversion operation is generated, wherein the input profile comprises information to convert color data from the first color space to the intermediate standard color space; and color space conversion operations are performed on the color data using the generated input profile to convert the color data from the first color space to the intermediate standard color space.

Abstract: Embodiments of the invention relate generally to generating images, and more particularly, to systems, apparatuses, integrated circuits, computer-readable media, and methods to facilitate the use of three dimensional color synthesis techniques to reproduce colors properly using, for example, two sub-pixel mosaics, at a boundary between two colors. A method can include receiving into a color element a first colored illuminant and a second colored illuminant. The method also can include determining that the color element is configured to generate a color that has one or more color characteristics for a portion of the reproduced image. Further, the method can include modifying at least one of the first colored illuminant and the second colored illuminant to adjust the one or more color characteristics into a range of values associated with a portion of an image that corresponds to the portion of the reproduced image.

Abstract: An image is processed in a device-independent color space by applying a modification function to one or more dimensions of that color space. The image is then converted into a target device-dependent color space. In order to minimize unwanted changes of color arising from the modification function taking image color values out of gamut when converted to the target device-dependent color space, the modification function is scaled to limit modified image values to within modification limits that are determined, for each image pixel or group of pixels, in dependence on the target device-dependent color space gamut boundary in the device-independent color space.

Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data to facilitate distinguishing crop image data (e.g., crop rows) from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An intensity evaluator determines scan line intensity data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line intensity meeting or exceeding a maximum value or minimum threshold value.

Abstract: A color tone setting window 100 that includes an ink color circle 110 is displayed in order to set a color tone of a monochrome image. By specifying a point Pcc in the ink color circle 110, intensities of color components representing three chromatic primary color inks are specified. The color component intensities representing three chromatic primary color inks are determined as parameters defining the color tone of the monochrome image in accordance with the position of the specified point Pcc in the ink color circle 110. The ink color circle 110 is configured such that the color component intensities representing three chromatic primary color inks can be visually recognized from the position in the ink color circle 110. Alternatively, ink color sliders can be used in lieu of the ink color circle 110.

Abstract: The present invention relates to a color adjustment apparatus and a method thereof. The color adjustment apparatus according to the present invention includes a calculation unit and an adjustment unit. The calculation unit receives an input color signal, and divides the input color signal into color groups and performs a calculation operation thereon to generate at least two calculation signals. The adjustment unit receives the calculation signals and the input color signal, and adjusts at least one of contrast group and complement group of the input color signal according to at least two of the calculation signals and a predetermined color value to generate an output color signal for a video-display apparatus. Accordingly, viewers can enjoy better visual experience.

Abstract: The invention provides a hue adjusting device. When one color axis including different hues is being adjusted by the user, the hue adjusting device will rotate each of the different hue angles in different rotation angles. Accordingly, the color of an image adjusted by the invention will be smoother than the prior art. Namely, the image quality can be improved.

Abstract: Aspects of the present invention relate to systems and methods for color image hue shifting. Some aspects relate to processes by which reference hue values and corresponding hue shift values are used to modify color hue values in a non-perceptually-uniform color space. Some aspects relate to processes that generate a hue shift table for modifying image hue values.

Abstract: A digital image processing method and system converts color images to monochrome images. Color image data is clustered. Centroids of clusters are mapped to monochrome values. The separation of the monochrome levels is adjusted, based on relative significance of corresponding clusters. Color pixels in the clusters are mapped to the adjusted monochrome levels, and the resulting monochrome pixels are rendered.

Abstract: A color attribute picked up from a pickup surface of a graphics design application document may be used to contaminate a paint data store. An injection color attribute may be re-injected into the paint data store. The resulting contaminated and re-injected paint data store may be used to tint one or more stamps in a stroke drawn on a target surface of the document. Thus, a color attribute of an existing pixel may be sampled and combined with an injection color attribute, such that the color attribute data applied by a graphics data manipulation tool is dynamic over the stroke of the graphics data manipulation tool in response to the picked-up color attributes and the injection color attributes.

Abstract: Methods and apparatus for generating composite images for displays are provided. For some embodiments, ray tracing algorithms may be utilized to efficiently generate a composite image corresponding to multiple views. Because ray tracing is done on a per pixel basis, it is possible to generate pixel values for only those pixels that will be allocated to a particular image view. By tracing rays from a viewpoint only through those pixels allocated to displaying images corresponding to that viewpoint, a composite image may be generated without discarding pixel data.

Abstract: The present invention provides a method for simultaneous hue phase-shifting and a system for 3-D surface profilometry, wherein a single structured-light fringe pattern with encoded multiple trapezoidal color fringes is projected on an object so as to obtain a color image having deformed fringe patterns and then a hue information extracted from a HSI color model associated with the fringe pattern is transformed into a hue phase-shifting information for restructuring the 3-D surface profile of the object. Since the color structured light is composed of a plurality of colorful light having phase shifts with each other in spatial domain, the single structured-light pattern comprises multiple hue phase-shifting information so that the phase shifting and unwrapping can be performed by one-shot 3-D surface reconstruction process without needs of traditional conventional phase wrapping and Euler's transformation procedures such that the efficiency of phase shifting and 3-D surface measurement can be improved.

Abstract: When purposing content for one or more targeted formats, a user selects a first mask from a plurality of masks in an integrated development environment (IDE). Each of the plurality of masks represent various target formats that the user desires to purpose the content to. Each mask has a transparent region representing a visible area of the target formats and a translucent region surrounding the transparent region. The first mask is placed in a separate layer from the content in the IDE display. The user then selects one or more additional masks that are also placed in separate layers than the content and the first mask. The region where each of the transparent regions of the selected masks intersect identifies a common viewable region of the target formats that have been represented.

Abstract: The hair color simulation system for simulating a dyed hair color that results from dyeing hair with a mixture of two hair color preparations includes a base screen with a first through fifth layers and an intermediate layer. The first through fifth layers and the intermediate layer are superimposed over one another so as to display a simulated hair color that is produced when the first hair line, the second hair line, the colors of the two hair color preparations and the original hair color are displayed on the layers with respective transparencies and superimposed over each other. The RGB values of the superimposed colors produced by the two hair color preparations and the original hair color are stored in data storage sections. Input sections receive choices of the two hair color preparations and a mixing ratio for the simulation.

Abstract: Video conversion using a 3D graphics pipeline of a graphical processing unit (GPU) is disclosed. A plurality of video data formatted in a first video format is accessed from a memory unit. Moreover, the plurality of video data is converted from the first video format to a second video format using a 3D graphics pipeline of the GPU. The plurality of video data formatted in the second video format is sent to the memory unit. The 3D graphics pipeline applies a filtering technique. In an embodiment, the filtering technique is an interpolation technique.

Abstract: When printing image data obtained by an input device, the present invention is intended to effectively utilize the color reproduction area of the printer. An image data processing method of the present invention comprises the steps of scale-down shifting a first color space point outside a maximum color reproduction area of an output unit to a second color space point within the maximum color reproduction area of the output unit; computing an amount of shift by which the first color space point is shifted to the second color space point; converting the second color space point to a third color space point within a color reproduction area smaller than the maximum color reproduction area of the output unit; and outputting an image to the output unit using image data obtained by scale-up shifting the third color space point to a fourth color space point within the maximum color reproduction area of the output unit based on the computed shift amount.

Abstract: A method for selecting paints is disclosed. This method includes the steps of selecting true paint colors, displaying device-dependent colors corresponding to the true paint colors in a simulated full size room and interacting with the buyers to change the displayed colors and select the desired colors. The method also includes the step of dispensing paints corresponding to the selected colors. The displayed colors are generated by multiple color and/or white LEDs to provide a wider gamut of displayable colors and more color saturation and chromatic. A full-size apparatus for displaying paint colors using device-dependent colors is also disclosed.

Abstract: An apparatus and method for enhancing device-adaptive color is disclosed. The apparatus includes an auxiliary-gamut-setting unit which sets a boundary of a device-adaptive auxiliary gamut using information on a color gamut of a source device and information on a color gamut of a desired reference color space; a gamut-conversion unit which converts the color in the gamut of the source device into the color of the set auxiliary gamut; and a gamut-mapping unit which carries out gamut mapping of the color of the auxiliary gamut to a destination gamut of an image output device.

Abstract: A method of gamut mapping includes the steps of defining a mapping function establishing a continuous first derivative of change of at least one color space component from a first color gamut to a second color gamut, and applying the function to first color gamut data for the at least one color space component.