High performance remote sensing image synthesis method and device

A remote sensing image and synthesis method technology, applied in the field of remote sensing image processing, can solve the problems of difficulty in ensuring the color consistency of the substitute area, image quality degradation, low degree of automation, etc., so as to improve calculation and processing efficiency, improve image utilization, guarantee The effect of tonal consistency

Active Publication Date: 2019-12-17
SUZHOU ZHONGKE IMAGE SKY REMOTE SENSING TECH CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the rapid mosaic of the existing technology requires a lot of manual selection of cloud-free and clear images to participate in the mosaic, which is inefficient; massive data provides rich raw materials for mosaic but also causes a lot of redundancy
As for the seamless replacement of the cloud area, it is still necessary to manually select the backup images, which is a heavy workload and a low degree of automation; it needs auxiliary images as support, so the data source and imaging quality directly affect the subsequent replacement effect; the histogram matching process It is the whole image, the quality of the processed image will be degraded, and it will affect the original uniform brightness of the image, making it difficult to ensure the color consistency of the replacement area

Method used

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  • High performance remote sensing image synthesis method and device
  • High performance remote sensing image synthesis method and device
  • High performance remote sensing image synthesis method and device

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Experimental program
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Embodiment 1

[0060] Such as figure 1 As shown, the present invention provides a method for synthesizing remote sensing images, which includes the following steps:

[0061] S10, acquiring original remote sensing image data, and extracting cloud coverage areas in the original remote sensing image data;

[0062] S20, performing mask clipping on the extracted remote sensing image data to obtain cloud-free debris image data and

[0063] storage;

[0064] S30, dividing the task area to be synthesized into blocks to obtain multiple sub-task areas;

[0065] S40, according to the cloud-free mosaic rule, based on the cloud-free fragment image data, respectively perform parallel processing of replacing and mosaicking the cloud-free fragment image data in each sub-task area, and output the synthesized cloud-free image data blocks of each sub-task area;

[0066] S50. Summarize the cloud-free image blocks acquired in each sub-task area, and output a synthetic cloud-free remote sensing image of the en...

Embodiment 2

[0077] On the basis of Embodiment 1, this embodiment provides a remote sensing image synthesis device, such as Figure 10 As shown, it includes: a preprocessing module 10, which is used to obtain the original remote sensing image data, and extract the cloud coverage area in the original remote sensing image data; a cropping module 20, which is used to perform mask cutting on the extracted remote sensing image data, to obtain Cloud-free fragment image and storage; Area division module 30, it is used for carrying out a plurality of sub-task areas division to task area, obtains at least one sub-task area; Replace mosaic processing module 40, it is used for carrying out sub-task area according to cloud mosaic rule Parallel replacement and mosaic processing, outputting the synthetic cloud-free image data block corresponding to the sub-task area; the summary module 50, which is used to summarize the synthetic image data blocks of multiple sub-task areas, and output the synthetic clou...

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Abstract

The invention discloses a high-performance remote sensing image synthesis method. The method comprises the steps that original remote sensing image data is acquired, and a cloud covered area in the original remote sensing image data is extracted; mask clipping is performed on the remote sensing image data obtained after extraction, and cloudless fragment image data is obtained and stored; a task area to be synthesized is divided into blocks to obtain multiple subtask areas; the cloudless fragment image data in the subtask areas is subjected to substitutive inlaying parallelization processing according to cloudless inlaying rules, and synthesized cloudless image data blocks in all the subtask areas are output; and the cloudless image data blocks acquired from all the subtask areas are gathered to output a synthesized cloudless remote sensing image of the whole task area. According to the method, only a cloudless fragment image is stored, so that the data storage volume is lowered; substitutive inlaying processing is performed according to areas in a multithread parallel mode, thus, efficiency is improved, and a large-range cloudless inlaid image can be acquired; by means of local histogram matching, the problem of hue inconsistency is eliminated while hue adjustment is guaranteed.

Description

technical field [0001] The invention relates to the technical field of remote sensing image processing, and more specifically, the invention relates to a high-performance remote sensing image synthesis method and device. Background technique [0002] Remote sensing technology takes the earth as a complete system, studies the spatial structure and interaction of its various circles, conducts qualitative and quantitative analysis of remote sensing data, and solves problems in the earth's resources and environment. Remote sensing technology has the advantages of macroscopic, rapid and repeated observation, and is widely used in environmental protection and resource investigation of land, water conservancy, forestry and agriculture. [0003] Remote sensing sensors can only capture images of a local area at a time, which is far from meeting the needs of large-scale remote sensing monitoring. In order to obtain a larger range of remote sensing images, it is usually necessary to p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10024G06T2207/10032G06T2207/20221
Inventor 黄启厅胡晓东王喆骆剑承
Owner SUZHOU ZHONGKE IMAGE SKY REMOTE SENSING TECH CO LTD
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