In an image processing apparatus a controller acquires target image data representing an image including first and second type of objects. The controller specifies, as a specific type color material, one of first and second type of color materials whose remaining amount is smaller than that of the other, and determines a first reduction index value indicating a first degree of reduction in an amount of the specific type color material for printing the first type of object. The controller creates processed data by performing a reduction process on the target image data to reduce an amount of the specific type of color material for printing the first type of object on the basis of the first reduction index value. An amount of the specific type color material for printing the second type object is not reduced on the basis of the first reduction index value.

In an example, processing apparatus includes an interface to receive input data comprising color data, a color mapping module to map at least one color of the input data to a print apparatus color space according to at least one mapping, and a preview module to generate a representation of a printed output of the print apparatus according to the mapping. The print apparatus color space may be defined based on print materials to be used by a print apparatus, wherein at least one print material comprises phosphorescent material. The preview module may generate a first image representing an externally illuminated printed output of the print apparatus, and a second image representing a phosphorescing printed output of the print apparatus in a low light environment.

A method of processing data in a multi-stage imaging pipeline, the method comprising, at each stage of the multi-stage imaging pipeline, identifying a plurality of encoding values represented in received input data in a given encoding space for the respective pipeline stage, the identified plurality of encoding values comprising a subset of encoded values which are capable of being represented in the given encoding space, generating a list of encoding indices corresponding to the identified plurality of encoded values in the given encoding space, representing the encodings of one or more entities of the received input data using the generated list of encoding indices, and outputting the represented encodings of the one or more entities to the next stage of the multi-stage imaging pipeline.

The present invention generally relates to a method and arrangement for estimating said at least one cross-channel color mapping model from a set of tuples of corresponding colors relative to at least two images. The method is characterized in that it uses a processor for selecting at least one intermediate tuple of corresponding colors from the set of tuples of corresponding colors by using at least one channel-wise color mapping model, and for estimating the at least one cross-channel color mapping model from the at least one intermediate selected tuple of corresponding colors.

An image forming apparatus stores raster image data corresponding to a background in a compressed format and generates intermediate data corresponding to a foreground of the background based on obtained print data. A decompressor decompresses the raster image data stored in the memory device and a rasterizer generates new raster image data based on the raster data corresponding to the background obtained by the decompression and the generated intermediate data corresponding to the foreground. When a request is made to stop the generation of the new raster image data in a state of waiting for at least a portion of the raster image data corresponding to the background to be decompressed, the rasterizer stops generation of the new raster image data, and the decompressor continues decompressing the at least a portion of the raster image data corresponding to the background.

An image processing apparatus includes a first-image generation unit that generates a first image by performing a visibility enhancement process on an original image in a first color space that is a color space not prone to having color values falling outside a color gamut as a result of conversion of color values of pixels in the original image in the visibility enhancement process, a representative chromaticity determination unit that determines a representative chromaticity that represents chromaticities of pixels in a first region that is an entirety or a part of one of the original image and the first image, and a second-image generation unit that generates a second image by performing, in a second color space, a process for adjusting color values of pixels in a second region that is the entirety or the part of the first image to make the representative chromaticity close to a target chromaticity.

Index-based geospatial analysis may include applying a first and second index-based analysis for a set of imagery. The set of imagery may include a location-specific index values used to form a histogram for a single index image (e.g., for a single surveyed field). This first analysis may be referred to as an acre-to-acre mapping, which may be useful for identifying differences in indices (e.g., NDVI vegetative health) of different parts of the field from a single day. A second day-to-day index-based analysis may be performed by calculating a histogram for each set of imagery from multiple days, combining the histograms, and generating a single equal-area index map. The index map can be applied to redistribute the histogram values within multiple days of data, which may provide a more useful map of variation in each individual image and changes between images.

A user defines the real costs for each of the individual inks used in printer and also defines a tolerance level for visual acceptance, defined in CIE units of DeltaE2000. Then, an algorithm performs a search through all nodes of the device link profile and for each node it tries to find an ink combination that creates less costs and is still within the given visual tolerance (<dE2000).

In certain aspects, the present disclosure relates to systems, methods, and devices for expanding a printing color gamut such as CMYK for printing or in preparation for printing on printing devices. In certain aspects, the disclosure relates to systems, methods and devices for optimizing or improving multicolor process print manufacturing, in particular, through automated and adaptive selection of additional colorants using color-perception based analysis of embedded visual content.

Color mapping information can be used to transform one color to another color. The present embodiments provide a solution for representing the color mapping information using a successive application of multiple color mapping functions. Parameters for the multiple color mapping functions can be encoded into a bitstream. In one embodiment, color mapping functions are consecutively applied on their own domains of definition only. In another embodiment, the first color mapping (CRI1) is applied on its domain of definition only, but the second color mapping is applied only on samples that have been previously color mapped by CRI1 and which are also inside the domain of definition of the second color mapping function. At the decode side, the multiple color mapping functions can be reconstructed and successively applied to a decoded picture to generate another picture.