A high-definition (HD) fax system routes outbound fax job requests including a high-resolution component to appropriate destinations, including among HD-enabled receiving devices and conventional fax devices. If it is determined that a fax destination is not HD-enabled, such as a conventional fax device, the high-resolution component of the outbound fax job request may be rendered as a low-resolution fax. The low resolution fax may be transmitted via a public switched telephone network (PSTN). On the other hand, if it is determined that a fax destination is HD-enabled, a determination may be made whether the HD-enabled fax destination is color enabled, and the high-resolution component may be rendered as either a high-resolution monochrome fax or a high-resolution color fax.

Source content super-sampled to a first resolution in an extended range space is obtained. A representation of a subpixel geometry of a display panel displaying the source content is obtained. The display panel includes, for every pixel, plural subpixel elements for three or more color primaries. A native resolution of the display panel is lower than the first resolution of the source content. An optimization operation is performed based on a set mode of the display panel and the representation of the subpixel geometry to derive a global optimization for determining, for a given pixel value based on the source content, an energy distribution between the plurality of subpixel elements of a corresponding pixel of the display panel. The source content in the extended range space is converted into intermediate content in a display space based on the global optimization. The intermediate content is further optimized based on error minimization.

Systems and methods for analyzing printed images are provided. One system includes a processing circuit configured to: determine a set of one or more locations on the printed image on the substrate to measure color values; determine a set of input tone values for the at least one ink; receive a set of measured color values corresponding to the set of locations on the printed image from a sensor; and determine a tone value increase error based on the set of measured color values and the set of input tone values. The at least one processing circuit is configured to determine the tone value increase error without requiring measured color values from an area having solid ink.

A display device capable of displaying images with wide color gamut is provided. A display device capable of displaying images with wide color gamut and capable of relaxing contrast made by narrow spectra is provided. The display device includes a liquid crystal element and a light-emitting element. Light obtained from the liquid crystal element through a color filter has an NTSC area ratio of more than or equal to 20 percent and less than or equal to 60 percent and light emitted by the light-emitting element has a BT.2020 area ratio of more than or equal to 80 percent and less than or equal to 100 percent.

A printing system is disclosed. The printing system includes a color management unit including one or more color caches to store input colors and corresponding output colors and a color engine (CE) to receive the input colors and perform Force-X transformations to map an input color into an output color based on a pre-defined color parameter.

A dynamic range compression device compresses multiple signal data pertaining to a common frame based on a total signal intensity range from multiple signals and limits compression of one or more signal data that are not saturated. The dynamic range compression device includes a total signal intensity circuit that calculates total intensity based on all of the signal data, a recalculation circuit that calculates a new compressed value for each signal data based on the calculation of total signal intensity to within a narrower range, a saturation circuit that determines whether one or more signal data after compression exceeds a predetermined value and are saturated signal data, and a data distribution circuit that decreases the value of the one or more saturated signal data and that increases the value of one or more non-saturated signal data.

In some examples, a component for a printing device includes a memory device comprising a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing. The respective corrective data includes a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types.

A perceptual hue preserved (PHP) color gamut transferring (CGT) method carried out in CIE-1931 color space includes obtaining a target gamut based on a rendering device of a content. Multiple color-moving constraints (CMC) are retrieved from a dataset. Perceptually consistent hue loci (PCHL) of out-of-gamut (OOG) colors of the content are estimated according to the CMC and a protection zone boundary. Each of the OOG colors are moved along its PCHL to a final point inside the target gamut based on a CGT plan data. The CGT plan data includes target and source boundary information formed using the CMC and the protection zone boundary.

The present disclosure discloses an image processing method, an electronic device and an apparatus having a storage function. The method includes: inputting a to-be-processed image of a source color gamut; converting a pixel value within the to-be-processed image into a coordinate value of a preset color space; determining whether a first color gamut point in the source color gamut is located outside a target color gamut according to the coordinate value; if yes, converting the first color gamut point into a second color gamut point in an outer converting region in the target color gamut. In the above manner, the present disclosure can increase the level of detail of an image after being mapped in different color gamuts.

The present principles relate to a method and device for gamut mapping from a first color gamut towards a second color gamut. The method comprises obtaining a preserved key color (prsv_color.sub.K0) and a hue alignment angle (.sub.K0) of the key color (color.sub.K0) for each key color (color.sub.K0) of at least 3 key colors to define a preserved gamut and a rotated gamut; and performing a hue mapping of a current color (color) from the first color gamut towards the second color gamut wherein in case the current color (color) is in a preserved gamut defined by the preserved key color (prsv_color.sub.K0), the hue mapped current color is unchanged, and in case the current color is out of the preserved gamut, the hue mapped current color is calculated from the hue alignment angle (.sub.K0) of two adjacent key colors of the current color (rotated gamut) and from the preserved area.