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Method for supporting color conversion on pre-multiplied data

A technology of data transformation and color transformation, applied in the direction of texture/color, color signal processing circuit, electrical components, etc., can solve problems such as system performance impact

Active Publication Date: 2017-01-18
KONICA MINOLTA LAB U S A INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although this computation is not expensive, this three-step transformation requires excessive memory access and negatively affects the performance of the system running the color transformation

Method used

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  • Method for supporting color conversion on pre-multiplied data
  • Method for supporting color conversion on pre-multiplied data
  • Method for supporting color conversion on pre-multiplied data

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Embodiment Construction

[0020] Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. For consistency, the same reference numerals are used to designate the same elements in the various figures.

[0021] In the following detailed description of embodiments of the invention, numerous specific details are set forth in order to provide a more thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well known features have not been described in detail in order to avoid unnecessarily complicating the description.

[0022] In general, embodiments of the present invention provide methods, systems, and non-transitory computer-readable media for transforming color data from one color space (e.g., RGB, GRAY, CMY, HSL, etc.) to another color space (CRM). Examples of such systems include, but are not limited...

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Abstract

The invention discloses a method for supporting color conversion on pre-multiplied data. According to the invention, the method for converting color data includes reading from a memory the color data represented in a first color space; converting the color data into un-premultiplied color data; converting the un-premultiplied color data from the first color space to a second color space; converting the un-premultiplied color data in the second color space into first premultiplied color data; and writing the first premultiplied color data to the memory.

Description

technical field [0001] The present invention relates to a method and a color transformation system for transforming color data. Background technique [0002] Color space transformations are often required for handling color data of electronic documents or images on different computing systems, such as personal computers (PCs) or printer systems. In general, it depends on the computing system to select an appropriate color space. For example, the RGB color space is generally used for displaying electronic documents and images on a monitor by a PC, and the CMYK color space is used for outputting print data on paper by a printer system. Thus, the printer system must convert the print data from RGB to CMYK before printing. [0003] Some color data may require additional transformations before and after the color space transformation. Such color data may include color values ​​(eg, red, green, and blue in the RGB color space) and an alpha channel value (eg, 0-100%) normally us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/46H04N1/56H04N1/60
CPCH04N1/46H04N1/56H04N1/603H04N9/64G06T11/001H04N9/76H04N1/6022H04N1/6025
Inventor 达雷尔.E.贝勒特
Owner KONICA MINOLTA LAB U S A INC