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Color signal processing apparatus and method, color conversion apparatus and method

一种颜色信号、处理装置的技术，应用在图像通信、电气元件等方向，能够解决色调稀疏等问题，达到防止颗粒度劣化的效果

Active Publication Date: 2009-12-23
FUJIFILM BUSINESS INNOVATION CORP
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Problems solved by technology

Colors generated from the original colors that are initially evenly spaced are densely hued around point P and therefore sparsely hued on the low lightness / low chroma side

Method used

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  • Color signal processing apparatus and method, color conversion apparatus and method
  • Color signal processing apparatus and method, color conversion apparatus and method
  • Color signal processing apparatus and method, color conversion apparatus and method

Examples

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Embodiment Construction

[0053] figure 1 The configuration of the color signal processing device according to the first exemplary embodiment of the present invention is shown. exist figure 1 In, reference numeral 11 denotes a total quantity limit value setting section; reference numeral 12 denotes a total quantity calculation section; reference numeral 13 denotes a limit value calculation section; and reference numeral 14 denotes a color correction section. The output color signal is a color signal in an output device color space used in an output device for output using a color material, where the output device color space has each color of the color material used in the output device as a color component. In this exemplary embodiment, it is assumed that the input color signal is also a color signal in the color space of the output device. In the present exemplary embodiment, the color components of the color space of the output device include black. A specific example of an output device color sp...

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PUM

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Abstract

The invention discloses a color signal processing apparatus and a method, and a color conversion apparatus and a method. The color signal processing apparatus includes a total amount calculating unit, a limit value calculating unit and a correcting unit. The total amount calculating unit calculates a total amount value of an input color signal in an output device color space which has, as color components, colors of coloring materials used in an output device. The limit value calculating unit calculates a limit value for limiting a total amount of a color signal, in accordance with the calculated total amount value. The correcting unit corrects the input color signal in the output device color space so that the total amount value of the input color signal becomes the calculated limit value or less.

Description

technical field [0001] The invention relates to a color signal processing device, a color conversion device, a color signal processing method, a color conversion method, a computer readable medium and a computer data signal embedded with a program. Background technique [0002] There is a case where, in an output device that outputs a color image or the like using a plurality of color materials, the total amount of color materials used may be limited in order to, for example, maintain necessary image quality or reduce the load on the output device. For example, in the case of using C (cyan (cyan)), M (magenta), Y (yellow), and K (black) color materials, the amount of each color material takes a value between 0% and 100%. , and further the total color material amount takes a value between 0% and 400%. For example, in the case of limiting the total color material amount of the output device to 300% (the total limit value), it is necessary to convert colors with a total color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/46H04N1/60
CPCH04N1/6058
Inventor 伊东昭博岩渊稔弘
Owner FUJIFILM BUSINESS INNOVATION CORP
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