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Method for correcting color distortion of photographs by digital photograph exposure system

A technology of exposure system and correction method, which is applied in the direction of image communication, electrical components, etc., can solve problems such as color distortion of printed photos, achieve high reliability, significant effect, and improve the effect of exposure uniformity

Inactive Publication Date: 2012-02-01
TIANJIN IAT SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages, adopt a software image processing method to solve the problem of color distortion of printed photos after digital images are exposed to photographic paper; provide a digital photo exposure system with simple process, reasonable design, and remarkable application effect to correct photos Color Distortion Method

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  • Method for correcting color distortion of photographs by digital photograph exposure system
  • Method for correcting color distortion of photographs by digital photograph exposure system
  • Method for correcting color distortion of photographs by digital photograph exposure system

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Embodiment Construction

[0021] Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation methods and features provided according to the present invention are described in detail as follows:

[0022] Such as Figure 6 As shown, a digital photo exposure system corrects the method for photo color distortion, and the implementation steps of the correction method are as follows:

[0023] In order to solve the color loss of the exposed image, it is first necessary to find out the error value of each pixel point in different color gamut values, and obtain the accurate correction value after the experiment to correct the image.

[0024] (1) Make 9 grayscale images

[0025] Since the value range of red, green, and blue components is between 0 and 255, including 0 and 255, when the red, green, and blue components are all 0, it is a black image, and when the red, green, and blue components are all 255, it is a white image. , so when the red, green, and blue com...

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Abstract

The invention relates to a method for correcting the color distortion of photographs by a digital photograph exposure system, which comprises the following steps of: programming an image processing program, and correcting color values of red, green and blue components of pixel points one by one in a software mode by a method of grayscale image homogenizing to solve the problem of color distortionof exposure imaging of a color digital exposure system with 3 light crystal display (LCD) imaging; and making a gray image in a color gamut distortion distribution area, after exposing developed and printed photographs, scanning and inputting the exposed photographs to a computer, and comparing with each pixel value of the original image to find an error value to correct the pixel points one by one, so that the standard deviation of the red, green and blue components on the developed and printed grayscale photographs is controlled within 1.0 to fulfill the aim that the color is consistent with that of the original image furthest. The method is simple and easy, has the obvious effect and high reliability and is suitable for the popularization and application of the industry.

Description

technical field [0001] The invention relates to a method for correcting photo color distortion, in particular to a method for correcting photo color distortion by a digital photo exposure system. Background technique [0002] At present, the color digital exposure and printing equipment using 3LCD imaging is to expose the digital image formed on the liquid crystal display to a light source (LED light source, metal halide light source or other light source) and then expose it on the photo paper through the lens and then develop, fix, and rinse. 1. Equipment for obtaining colorful color photos after drying. Due to the influence of hardware design accuracy, processing accuracy, and assembly accuracy of LCD screens, light sources, and lenses, the uniformity of digital images on photo paper cannot achieve ideal results. Compared with actual images, a common situation is The image in the middle area of ​​the photo developed after exposure is dark in color, and the four corner are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/60
Inventor 靳张铝李海洋吴向东鄢立坤刘喜章
Owner TIANJIN IAT SCI & TECH
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