In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.

There are provided methods and apparatus for driving an electro-optic display. In an electronic color display including an active matrix of pixels and an electro-optic medium, the method comprises receiving an input image, processing the input image to create color separation cumulate, and using a threshold array to process the color separation cumulate to generate output colors for the electronic color display. In many instances the color gamut of the input image and the color gamut of the electronic color display are different.

In some embodiments, an apparatus comprises a media module and a modification module included in an embedded appliance. The media module is configured to receive a first media signal associated with a first input port of the embedded appliance and a second media signal associated with a second input port of the embedded appliance. The media module is configured to identify a first set of media signal parameters based on the first media signal. The modification module is configured to receive a modification instruction associated with a session format having a second set of media signal parameters different from the first set of media signal parameters. The modification module is configured to modify the first media signal based on the first set of media signal parameters and the modification instruction to produce a first modified media signal in the session format and having the second set of media signal parameters.

In one embodiment, a computing system may determine a target grayscale value associated with a target image to be represented by a plurality of subframes. The system may determine grayscale ranges based on the target grayscale value. Each grayscale range may correspond to a combination of zero or more subframes of the plurality of subframes. The system may select dot subsets from a dithering mask based on the grayscale ranges. Each of the dot subsets may correspond to a grayscale range. The system may generate the subframes based on (1) the selected dot subsets and (2) respective combinations of zero or more subframes. The subframes may have a smaller number of bits per color than the target frame. The system may display the subframes sequentially in time domain on a display to represent the target image.

The present application discloses a color image processing method, a color image processing device, an electronic ink screen, and a storage medium. The color image processing method includes: obtaining an original image, and transforming original color data of a pixel in the original image into corresponding set color data in a set color space; determining a target color corresponding to the pixel in a plurality of set colors according to the set color data corresponding to the pixel and a color ratio allocation table; and generating a target image according to the target color.

A method includes receiving information about a color blindness of a viewer and an electronic display; receiving information about an input image including input R, G, and B values for pixels composing the input image; transforming each pixel's input values to corresponding x and y values in a CIE color space; identifying which of the pixels are within a filter area in the CIE color space; adjusting a color of the pixels that are within the filter area away from a confusion line for the color blind person to provide a corresponding color-modified pixel; generating a color-modified image composed of the color-modified and original pixels; and displaying the color-modified image with the electronic display.

A studio display environment and/or applications thereof are provided, wherein a display (e.g. LED display) is used onto which images or video are being shown, that are recorded by one or more cameras. The invention further relates to methods and systems for improved camera view in such studio display environment and/or applications.

A system includes a display panel with several pixels. A pixel includes a first, a second, and a third set of light emitting diodes (LED). Each LED in the first set outputs a first color light, each LED in the second set outputs second color light, and each LED in the third set outputs a third color light. The pixel emits a display light of a color that is a combination of the first, second, and third colors. In response to a driver inputting a first electric current to the first set of LEDs, a second electric current to the second set, and a third electric current to the third set, the display light from the pixel is of a predetermined target color, the first, the second, and the third electric current being substantially same and within a predetermined tolerance of each other.

A method includes modeling, by a computing device, color saturation variations of different hues in a working color space with one or more properties of responses of a human vision system (HVS) to color stimulus. The computing device further generates one or more color saturation variation models based on the responses of the HVS to color stimulus.