Sequence remote sensing image tone consistency correction method and system

A technology of remote sensing images and correction methods, applied in image analysis, image data processing, instruments, etc., can solve the problem of inconsistent color tone of serial remote sensing images

Active Publication Date: 2016-09-21
SHENZHEN JIMUYIDA TECH CO LTD
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Problems solved by technology

[0006] The present invention aims at the color tone inconsistency problem that may occur when sequence remote sensing i

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  • Sequence remote sensing image tone consistency correction method and system
  • Sequence remote sensing image tone consistency correction method and system
  • Sequence remote sensing image tone consistency correction method and system

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[0055] In order to make the object, technical solution and advantages of the present invention 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.

[0056] The technical solution adopted by the invention provides a method for uniform light and color processing of sequence remote sensing images. Such as figure 1 As shown, the sequential images are adjusted in the Lαβ space with low correlation between channels, and the luminance channel and color channel are adjusted consistently, and finally converted back to the RGB space to obtain the final processing result map. Include the following processing steps:

[0057] Step 1, convert the color sequence image from RGB color space to Lαβ color space. The conversion process is as follows:

[0058] ...

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Abstract

The invention discloses a sequence remote sensing image tone consistency correction method and a system. The method comprises the following steps: transferring a colored sequence image from RGB color space to L[alpha, beta] color space to perform the tone transfer preprocessing and the global gain compensation of luminance channels; in color channel histogram mapping, adjusting the image gray-scales of color channel [alpha] and color channel [beta] separately; transferring all images from L[alpha, beta] color space to RGB color space and outputting and saving the processed results. According to the invention, the method and system can effectively suppress or eliminate the differences in brightness and the color existing in the images by utilizing the tone corresponding relationship of the overlapping areas of adjacent images. The method and system can also greatly reduce the image distortion caused by the correlation between the channels, and automatically select the reference color by searching the maximum consistent image subset, thus avoiding the problem of manually selecting the reference color.

Description

technical field [0001] The invention belongs to the technical field of remote sensing image processing, and in particular relates to a tone consistency correction method and system for sequence remote sensing images. Background technique [0002] Remote sensing images are widely used in geographic mapping, disaster monitoring, resource survey and urban planning. As a part of the rapid stitching process of remote sensing images, compared with other modules, there are fewer research results on the uniform light and color processing of sequence images, and they mainly focus on the uniform light processing of image brightness, mainly including: MASK Dodging algorithm, Wallis filter dodging algorithm, etc. There is no more classic and mainstream processing method for color difference problems such as color cast and color difference between images. For a large-scale measurement area, due to the influence of illumination angle and cloud cover, it is difficult to avoid the brightn...

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Application Information

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IPC IPC(8): G06T7/40
Inventor 姚剑夏孟涵李礼刘亚辉谢仁平
Owner SHENZHEN JIMUYIDA TECH CO LTD
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