An image processing device includes a color reproduction characteristic acquiring unit that acquires a color reproduction characteristic of a display device, a color reproduction characteristic correction unit that corrects the color reproduction characteristic, a feature amount extraction unit that extracts a feature amount which is an object of the correction of the color reproduction characteristic acquired by the color reproduction characteristic acquiring unit, and an evaluation image selecting unit that selects, based on the feature amount, an evaluation image which is a source for generating a confirmation image including (i) an image when the color reproduction characteristic acquired by the color reproduction characteristic acquiring unit and before the correction is used and (ii) an image when the color reproduction characteristic after the correction by the color reproduction characteristic correction unit is used.

Systems and methods for providing remote approval of an image for printing are provided. One system includes a processing circuit in communication with an image capturing device that is configured to capture an image of a printed product. The processing circuit is configured to process the captured image into a processed image accurate to within a tolerance in a color space to indicate the visual appearance of one or more colors. The color space is a standardized color space, such as sRGB or CIELAB. The processing circuit is further configured to transmit the processed image to a display located remote from the image capturing device and to receive an input signal from a remote input device to allow a user to approve or reject the displayed processed image for printing on a print device.

Described are examples for storing an advanced color image. A set of values stored in a first number of byte values can be determined, where each value in the set of values corresponds to a parameter of a set of parameters representing one or more pixels of an advanced color image. The set of values can be packed into a set of byte values, where a second number of byte values in the set of byte values is less than the first number of byte values. The set of byte values can be stored or communicated in representing the one or more pixels of the advanced color image.

Described are examples for generating high dynamic range (HDR)/wide color gamut (WCG) output from an image sensor. A raw red, green, blue (RGB) image obtained by the image sensor can be received. A plurality of color transform operations can be applied to the raw RGB image to generate a HDR/WCG image. The HDR/WCG image can be stored in a memory, displayed on a display, transmitted to another device, etc.

Provided is a change degree deriving device including a receiving unit that receives an image obtained by capturing a known color body and an object while focusing on the object, the known color body including plural of color samples, each of which has a known color numerical value, and a detection image, and a detecting unit that detects a focus deviation of the color samples in the image, based on the detection image.

Systems and methods for providing remote approval of an image for printing are provided. One system includes a processing circuit in communication with an image capturing device that is configured to capture an image of a printed product. The processing circuit is configured to process the captured image into a processed image accurate to within a tolerance in a color space to indicate the visual appearance of one or more colors. The color space is a standardized color space, such as sRGB or CIELAB. The processing circuit is further configured to transmit the processed image to a display located remote from the image capturing device and to receive an input signal from a remote input device to allow a user to approve or reject the displayed processed image for printing on a print device.

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 input colors and perform Force-K transformations to map near black input colors into pure black output colors by dynamically identifying the near black input colors based on chroma values and effective output values.

Video frames of a higher-resolution chroma sampling format such as YUV 4:4:4 are packed into video frames of a lower-resolution chroma sampling format such as YUV 4:2:0 for purposes of video encoding. For example, sample values for a frame in YUV 4:4:4 format are packed into two frames in YUV 4:2:0 format. After decoding, the video frames of the lower-resolution chroma sampling format can be unpacked to reconstruct the video frames of the higher-resolution chroma sampling format. In this way, available encoders and decoders operating at the lower-resolution chroma sampling format can be used, while still retaining higher resolution chroma information. In example implementations, frames in YUV 4:4:4 format are packed into frames in YUV 4:2:0 format such that geometric correspondence is maintained between Y, U and V components for the frames in YUV 4:2:0 format.

The present disclosure provides a color space switching method and apparatus, an electronic device, and a computer-readable storage medium. The color space switching method includes: converting image data in a YUV format into image data in an RGB format according to first color space switching formulae; and the first color space switching formulae include: R=f(Y, V); G=f(Y, U, V); B=f(Y, U), where R represents an R component of the image data in the RGB format, G represents a G component of the image data in the RGB format, B represents a B component of the image data in the RGB format, Y represents a Y component of the image data in the YUV format, U represents a U component of the image data in the YUV format, and V represents a V component of the image data in the YUV format.

Embodiments of the present disclosure disclose a digital image conversion method and apparatus. The method includes: acquiring an RGB indication signal of a forward-correlated pixel of a current pixel; comparing an RGB signal of the current pixel with the RGB indication signal of the forward-correlated pixel; acquiring a YUV indication signal of the forward-correlated pixel and assigning the YUV indication signal to a YUV signal of the current pixel, if the RGB signal of the current pixel is identical to the RGB indication signal of the forward-correlated pixel; and recalculating the YUV signal of the current pixel according to the RGB signal of the current pixel, if the RGB signal of the current pixel is different from the RGB indication signal of the forward-correlated pixel. The digital image conversion method and apparatus disclosed in the embodiments of the present disclosure can effectively reduce the amount of calculation required for image data conversion.