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Automatic-toning image processing method and system based on fuzzing

An image processing and blurring technology, applied in the field of image processing, can solve problems such as distortion and inability to achieve natural transition, and achieve the effect of natural transition, better effect and uniform tone distribution

Active Publication Date: 2015-06-24
XIAMEN MEITUZHIJIA TECH
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Problems solved by technology

[0005] However, the existing local tone mapping method or global tone mapping method will produce a certain degree of distortion, which cannot achieve a natural transition effect.

Method used

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  • Automatic-toning image processing method and system based on fuzzing

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Embodiment Construction

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Such as figure 1 Shown, a kind of image processing method based on fuzzy automatic tone of the present invention, it comprises the following steps:

[0042] 10. Perform histogram statistics on the red, green and blue channels of the image respectively;

[0043] 20. Set the clipping ratio of shadow and highlight, and perform shadow statistics and highlight statistics on the histogram statistical results according to the clipping ratio, and obtain the respective highlight clipping values ​​and shadow clipping values ​​of the red, green, and blue c...

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Abstract

The invention discloses an automatic-toning image processing method and system based on fuzzing. The automatic-toning image processing method includes the steps of respectively carrying out histogram statistic on the red channel, the green channel and the blue channel of an image, obtaining respective highlight pruning values and respective shadow pruning values of the red channel, the green channel and the blue channel, then generating a corresponding red mapping table, a corresponding green mapping table and a corresponding blue mapping table, further carrying out fuzzy processing on the mapping tables to obtain fuzzy mapping tables, and finally and respectively mapping color values of pixel points on the red channel, the green channel and the blue channel of the image according to the fuzzy mapping tables to obtain the final color tone of the image. In this way, the true tone of the image is better restored, tone distribution is more even, tone transition is more natural, and the effect is better.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image processing method based on fuzzy automatic color tone and a system applying the method. Background technique [0002] Tone mapping methods can be classified into global tone mapping methods and local tone mapping methods. [0003] The local tone mapping method actually considers the spatial information of a point when adjusting the gray value of a point in the image, so it can enhance the local small contrast and compress the relatively large contrast. The display of the processed image details is better than that of the global method, but the disadvantage is that the real-time performance is poor and it is prone to different degrees of distortion. [0004] The global tone mapping method actually uses the same transformation curve for each pixel when performing dynamic range tone transformation on the image, and the transformation curve can be specified in adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 张伟傅松林李志阳张长定
Owner XIAMEN MEITUZHIJIA TECH
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