Patent classifications
H04N1/6058
USING AT LEAST ONE VIRTUAL PRIMARY COLOR TO MAP IMAGE COLORS ACROSS DISPLAY TECHNOLOGIES
An illustrative apparatus maps a first color of a first image of a scene to a second color of a second image of the scene. The first color of the first image is defined by a combination of real primary colors of a first display technology. The second color of the second image is determined by mapping at least one of the real primary colors of the first display technology to at least one virtual primary color for a second display technology and using the at least one virtual primary color to define the second color of the second image. The at least one virtual primary color is different from real primary colors of the second display technology.
METHOD AND APPARATUS FOR SELECTIVELY PRESENTING CONTENT
A method, system, apparatus, and/or device for displaying a portion of data so as to not obstruct a portion of a central visual field. The method, system, apparatus, and/or device may include a display configured to display data and a processing device coupled to the display. The processing device may be configured to determine a position of an eye of a viewer with respect to the display, define a first region of the display substantially corresponding with a peripheral vision field of the eye, define a second region of the display substantially corresponding with a central visual field of the eye, send a first portion of the data to be displayed at the first region, and send a second portion of the data to be displayed at the second output region such that a portion of the central visual field is unobstructed by the second portion of the data.
Determination of chroma mapping functions based on hue angular sectors partitioning the gamut mapping color space
This determination comprises: defining key constant-hue leaves such as to partition the gamut mapping color space into angular hue sectors; for each key constant hue leaf, defining a key hue leaf chroma mapping function; for each angular hue sector, defining a continuous angular hue sector chroma mapping function such that, for any source color belonging to one of the two key constant-hue leaves delimiting this angular hue sector, this continuous chroma mapping function allows to map the chroma of said source color according to the key hue leaf chroma mapping function of the key constant-hue leaf to which said source color belongs. Preferably, this mapping functions are non linear polynomials.
Information processing apparatus that generates color conversion table to be set in image forming apparatus, information processing method, and storage medium
An information processing apparatus that generates a color conversion table to be set in an image forming apparatus includes a conversion unit that uses a color conversion table to convert input RGB values into output RGB values, wherein the color conversion table is a conversion table for conversion of the input RGB values into output RGB values that depend on a color gamut of the image forming apparatus, an extraction unit that extracts an L value indicating lightness out of a plurality of elements forming Lab values corresponding to the output RGB values, a correction unit that corrects the extracted L value, and a correction unit that uses the corrected L value, and a and b values indicating chromaticity and other than the extracted L value out of the plurality of elements forming the Lab values corresponding to the output RGB values to correct the color conversion table.
Color conversion table creation apparatus and method, color conversion apparatus, and program
Provided are a color conversion table creation apparatus and method, a color conversion apparatus, and a program capable of further increasing color matching accuracy. A color conversion table creation apparatus includes an image reading unit (30) that acquires read image data of a target printed article, a first color conversion unit (64) that performs color conversion by using a first color conversion table representing a correspondence relationship between a signal value of a first color space obtained from the image reading unit (30) and a chromaticity value of a second color space which is a device-independent color space, an image correlation unit (62) that performs correlation of a positional relationship between the read image data or read chromaticity value image data converted into a chromaticity value and original document image data, and a color conversion table creation unit that creates a second color conversion table representing a multi-dimensional correspondence relationship between a third color space of the original document image data and a second color space on the basis of a correspondence relationship between the original document image data and a chromaticity value of a read image, in which a first printed article which is printed by a printing apparatus (18) on the basis of first image data is read by the image reading unit (30), and thus an output device color conversion table (94A) is created.
Pipeline for high dynamic range video coding based on luminance independent chromaticity preprocessing
The disclosure describes a high dynamic range video coding pipeline that may reduce color artifacts and improve compression efficiency. The disclosed pipeline separates the luminance component from the chrominance components of an input signal (e.g., an RGB source video) and applies a scaling of the chrominance components before encoding, thereby reducing perceivable color artifacts while maintaining luminance quality.
COLOR SEPARATION TABLE CREATING METHOD, PROGRAM, AND PRINTING DEVICE
A color separation table creating method includes: setting a grid point having a process color as a color component and creating a color separation table in which a color on each grid point is represented by a separation value of each color component when the color is approximated by a mixed color of the process color and a spot color; smoothing the separation value corresponding to each grid point of the color separation table; and changing the separation value corresponding to each grid point of the color separation table after smoothing such that color shift by the smoothing is corrected, wherein, at the changing, while fixing the separation value of partial color component out of the process color and spot color, the separation value of another color component is changed.
Color gamut mapping method and color gamut mapping device
A color gamut mapping method and a color gamut mapping device is provided, the method includes: determining a mapping target color gamut; obtaining a Lab value of a color point in the original color gamut, and determining a coordinate position of the color point in a corresponding tone plane of the original color gamut; judging the color point position; determining an intersection of a horizontal line the color point located and a boundary of the original color gamut, and a boundary of the mapping target color gamut; and determining a mapping point of the color point on the boundary of the map target color gamut by a ratio of an area of a pattern formed by the intersection, and an intersection of the original color gamut and a coordinate axis, and a difference between the area of the original color gamut and the area of the mapping target color gamut.
Image processing device, image processing method, and program
An image processing device includes an acquisition section configured to acquire first still image data obtained through imaging and having a brightness range defined in a first dynamic range and performance information indicating a printing performance of a printing device, a converter configured to convert the first still image data acquired by the acquisition section into second still image data defined in a second dynamic range having a smaller brightness range than the brightness range of the first dynamic range depending on the printing performance indicated by the performance information acquired by the acquisition section, and an output section configured to output the second still image data converted by the converter to the printing device.
Customizing virtual assets
Customizing virtual assets is disclosed, including: transforming each of a plurality of initially identical copies of a virtual asset or a portion thereof to isolate a feature of the virtual asset or portion thereof; and enabling the isolated feature to be changed by a user in at least one of the transformed copies. In some embodiments, customizing virtual assets includes: receiving a three-dimensional model associated with the virtual asset; receiving an indication to save a two-dimensional virtual asset based on the 3D model with a 2D image wrapped on it; and using the 3D model with the 2D image wrapped on it to generate the 2D virtual asset.