Color enhancement method suitable for remote sensing images

A remote sensing image and color enhancement technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of noise enhancement and poor image enhancement effect, and achieve the effect of improving contrast, enhancing details, and enriching colors.

Active Publication Date: 2018-11-06
CHANGGUANG SATELLITE TECH CO LTD
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  • Abstract
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Problems solved by technology

[0007] The present invention provides a color enhancement method suitable for remote sensing images to solve the problems of limitations, poor robustness, poor image enhancement effect and noise enhancement in existing remote sensing image color enhancement methods

Method used

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  • Color enhancement method suitable for remote sensing images
  • Color enhancement method suitable for remote sensing images
  • Color enhancement method suitable for remote sensing images

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specific Embodiment approach 1

[0039] Specific implementation mode 1. Combination Figure 1 to Figure 11 Describe this embodiment, a color enhancement method suitable for remote sensing images, aiming at the characteristics of the remote sensing images to be processed are not rich in color and low contrast, the remote sensing images are enhanced, and the process includes color migration processing, deblocking processing, deblurring processing and Sharpening. After processing, the color of the remote sensing image is significantly enriched, the brightness is improved, the contrast is improved, and the edge details are enhanced.

[0040] The concrete process of this implementation mode is:

[0041] 1. Carry out color migration processing on remote sensing color images, including the following steps:

[0042] 1.1 Input the remote sensing image src to be processed, and the color image tgt, where tgt is an image obtained in a high-definition library such as Google Maps that has the same geographical location a...

specific Embodiment approach 2

[0096] Specific embodiment two, combine Figure 2 to Figure 11 Describe this embodiment. This embodiment is a verification example of the color enhancement method suitable for remote sensing images described in Embodiment 1: the image after each step of remote sensing image processing is given in sequence, and at the end it is compared with the existing histogram equalization method, The Laplacian sharpening method and the linear stretching method are used to compare the results. The test sample comes from the Jilin-1 video 03 star data.

[0097] Such as figure 2 The image shown is the image of the Vigo area in Spain taken by the 03 satellite data of the Jilin-1 video. Observation shows that the image is overall dark and the contrast is not obvious; image 3 The incoming color image, which is a high-res image from Google Earth, is the same as figure 2 roughly the same geographic location; Figure 4It is the image obtained after the color migration processing in step 1. T...

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Abstract

The invention relates to a color enhancement method suitable for remote sensing images, relates to the remote sensing image processing technology field and solves problems of limitation, poor robustness, poor image enhancement effect and noise enhancement existing in a remote sensing image color enhancement method in the prior art. The method comprises steps that to-be-processed remote sensing images and color images are inputted; color migration processing for the to-be-processed remote sensing images is carried out; deblocking processing of the images after color migration is carried out; fuzzy kernels of the images after deblocking processing are calculated; Wiener filtering is utilized for the deblocked images for deblurring; the images are subjected to Laplacian sharpening after deblurring, and the final result images are obtained. The method is advantaged in that color richness of the remote sensing images can be substantially improved, the image contrast is improved, the edge information is strengthened, and the enhanced images have the good visual effect.

Description

technical field [0001] The invention relates to the technical field of remote sensing image processing, in particular to a color enhancement method suitable for remote sensing images. Background technique [0002] Remote sensing imagery is the electromagnetic radiation information of ground targets detected by space sensors. It contains very rich geographic information and is an important source of ground information. way. [0003] In the process of image acquisition, affected by factors such as lighting conditions, atmospheric flow, and atmospheric turbulence, remote sensing images have the characteristics of dark overall brightness, rich colors, low contrast, and indistinct distinction between the target and the background. Improving the contrast of the image and highlighting some local details play a positive role, which is conducive to reducing the impact of sensor performance degradation, atmospheric disturbance and other factors on the remote sensing image during the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/90
CPCG06T5/007G06T7/90G06T2207/10032
Inventor 翟雨微朱瑞飞高放王春月张鹏李竺强钟兴
Owner CHANGGUANG SATELLITE TECH CO LTD
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