Innovations in encoding or decoding when switching color spaces are presented. For example, some of the innovations relate to signaling of control information for adaptive color space transformation (ACT). Other innovations relate to ACT operations. These innovations can improve coding efficiency when switching between color spaces during encoding and decoding.

In some examples, a print cartridge includes a memory device comprising quantized coefficients derived from a lossy compression, at a selected step size, of a difference color table including a plurality of difference nodes in which each difference node represents a difference value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the quantized coefficients useable to produce a reconstructed difference color table including a first set of difference nodes each representing a difference value that is within an error threshold at the selected step size, and a second set of difference nodes each representing a difference value that is outside an error threshold at the selected step size. The memory device further comprises corrective information to correct the second set of difference nodes of the reconstructed difference color table.

An electronic endoscope processor has a configuration including: a converting means for converting pieces of pixel data that are made up of n (n3) types of color components and constitute a color image in a body cavity into pieces of pixel data that are made up of m (m2) types of color components, m being smaller than n; a color component correcting means for correcting the converted pieces of pixel data made up of m types of color components with use of a predetermined color component correction coefficient; and an acquiring means for acquiring an evaluation result related to a target illness based on the corrected pieces of pixel data made up of m types of color components.

A method of generating a set of halftone parameters. The method comprises assigning a first set of halftone parameters to a first location in a color space, the first location in the color space corresponding to a first color, and assigning a second set of halftone parameters to a second location in the color space, the second location in the color space corresponding to a second color. An interpolating between the first set of halftone parameters and the second set of halftone parameters is performed, based on the first location and the second location, to determine a third set of halftone parameters corresponding to a third location in the color space. The result of the interpolation is output data associating the third set of halftone parameters with a third color corresponding to the third location in the color space. The first set of halftone parameters may represent a relative area coverage of a first colorant combination and the second set of halftone parameters may represent a relative area coverage of a second colorant combination.

A correction coefficient calculation unit including a reference image output unit that generates a reference image, a profile receiving unit that receives image information and printing information, the image information indicating a color characteristic related to an image to be displayed on a display unit, the printing information indicating a color characteristic related to a printing device, and a reference image division unit that creates printing characteristic data that associates the reference image with the reference image that has undergone color conversion based on the printing information and the image information.

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.

Techniques to improve detection and security of images, including formation and detection of matrix-based images. Some techniques include logic to process image data, generate one or more colorspaces associated with that data, and perform colorspace conversions based on the generated colorspace. The logic may be further configured to generate an image based on the colorspace conversions, including but not limited to a matrix bar code. The logic may be further configured to apply one or both of an ultraviolet layer and an infrared layer to the image, e.g. matrix barcode, generated from the colorspace conversion(s). Other embodiments are described and claimed.

An image processing apparatus is provided with an input unit for inputting an image; a division unit for dividing the inputted image into a plurality of divided regions; an obtaining unit for obtaining a feature amount of the image for each of the divided regions; a generation unit for generating a compression curve for each divided region; and a compression unit for generating an output image by performing compression of a dynamic range using the compression curve for each of the divided regions, wherein the generation unit generates the compression curve for each of the divided regions so that a slope of the compression curve for each of the divided regions matches in a range from a luminance of a dark region of the image to a luminance of a predetermined brightness.

A method and system for processing thermal video images and thermal video images of patients, using a method of real-time demarcation of the macro aspect of the region of interest, generated by MIR and LIR electromagnetic wave emission and merging of the real image, with improvement of the image, also in real time, allowing for analysis of the micro aspect by means of NIR electromagnetic wave emission, for spectral identification of the sample by infrared vibrational spectroscopy. The method and system pertains to the fields of medicine, biomedicine, and electrical engineering.

An image processing apparatus capable of generating a color-reduced image with high object reproducibility is provided. The image processing apparatus includes a data processing unit configured or programmed to function as a generating unit generating a binary image for judging whether each of pixels constituting an image obtained is a background attribute or a character attribute, a first determining unit determining a first type representative color based on a histogram of RGB values of pixels judged to be the background attribute based on the binary image among all the pixels constituting the image, a second determining unit determining a second type representative color based on a histogram of RGB values of pixels judged to be the character attribute based on the binary image among all the pixels constituting the image, and a processing unit performing a color reduction processing on the image to generate a color-reduced image.