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Color image processing apparatus and color image processing method

A color image and processing device technology, which is applied in color signal processing circuits, image communication, electrical components, etc., can solve the problems that are not easy for ordinary users, and achieve the effect of increasing the frequency of use

Inactive Publication Date: 2006-08-30
MURATA MASCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Only by being familiar with the directionality of brightness and saturation stipulated in the color space, can the color adjustment of the above composite control of brightness and saturation components be performed, which is not easy for ordinary users

Method used

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  • Color image processing apparatus and color image processing method
  • Color image processing apparatus and color image processing method
  • Color image processing apparatus and color image processing method

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no. 1 approach

[0072] figure 1 The configuration of the input image processing unit 3 is shown in . Such as figure 1 As shown, the input image processing unit 3 has a CPU 11 for controlling the input image processing unit 3, a ROM 12 for storing a control program, a conversion table, and the like, and a RAM 13 for temporarily storing image data and the like. In addition, an operation unit 14 for inputting various instructions by the user and a display unit 15 for performing various displays are also provided. In the device of this embodiment, the display unit 15 is constituted by a flat panel display. The operation unit 14 may be constituted by an array of buttons to which functions are fixedly assigned, or may be constituted by a touch panel arranged on the display surface of the flat panel display. In addition, these two methods may be combined. Hereinafter, the description will be continued by taking as an example the case where the operation unit 14 is realized by a fixed arrangement...

no. 2 approach

[0145] In the first embodiment, the "shading adjustment mode" is constituted as a pair of respective modes of "brightening" and "darkening". On the other hand, as a pair of respective modes of "darkening" and "lightening", , constituting a "shade adjustment mode", but the color adjustment unit 182 in the second embodiment collects each pair into one color adjustment mode, and selects the sign of positive and negative as the direction of change, which essentially has the same color as that of the first embodiment. same function.

[0146]FIG. 10 is a diagram showing plane PH in the Lab color space, and has the same meaning as that of FIG. 4 in the first embodiment in the second embodiment. In FIG. 4 , moving the point P in the directions of the arrows S, T, U, and V means increasing the "brightness", "darkness", "density", and "lightness". In this embodiment, the "brightness" is increased by moving the point P in the + direction of the arrow S, and the "brightness" is decreased...

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Abstract

A color adjustment, which matches a directional property STUV given by sensuous terms relating to color tones, can be performed by converting color image data into a color space having a direction of lightness M, a direction of saturation N and a hue axis K, and relatively changing a lightness component and a saturation component of the color image data in the color space.

Description

technical field [0001] The present invention relates to a color image processing device for performing color adjustment on color image data. Background technique [0002] Some digital color multi-function peripherals and the like have a color adjustment function for adjusting the color (hue) of read color image data. After converting the image data read by a scanner, etc., into a uniform color space that specifies the color by numericalizing the three attributes of color, namely "hue", "brightness", and "saturation", such as the expression of a color space such as Lab For example, the color adjustment is performed by changing the brightness component in the color space by using the "brightness adjustment function", and changing the saturation component in the color space by using the "saturation adjustment function". For example, by using this "brightness adjustment function" to increase the brightness component of the image data, image data with high "brightness" while mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/60H04N1/46
CPCH04N1/608H04N1/6083H04N9/64
Inventor 南野胜巳
Owner MURATA MASCH LTD
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