A quadtree-based method and system for effectively mosaicing polygons to optimize cloud coverage areas

An effective area and polygonal technology, applied in image enhancement, instrumentation, computing, etc., can solve the problems of low data utilization efficiency, time-consuming and labor-intensive problems

Active Publication Date: 2020-10-13
WUHAN UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods generally remove the cloud coverage area in the mosaic image by artificially selecting data or manually editing. These methods are not only time-consuming and laborious, but also often require a lot of data to be selected. The entire image with a large cloud coverage is completely removed. Discard, low data utilization efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A quadtree-based method and system for effectively mosaicing polygons to optimize cloud coverage areas
  • A quadtree-based method and system for effectively mosaicing polygons to optimize cloud coverage areas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The invention proposes a method for automatically removing cloud coverage areas by optimizing effective mosaic polygons based on the idea of ​​quadtree space division. The problem to be solved is to remove the cloud coverage area in the mosaic image as much as possible, so as to improve the utilization rate of the image data with cloud coverage, shorten the imaging time period of the image data required to generate the cloud-free mosaic image, and provide a more current situation for various applications. remote sensing image data. This method optimizes the effective mosaic polygon at cloud region level, avoiding some problems caused by single pixel optimization. The actual test shows that this method is feasible and the effect is good, and a mosaic image with the cloud coverage area as small as possible can be obtained. On the premise of ensuring that there are cloud-free coverage images in all regions, this method can obtain a cloud-free mosaic image. The algorithm ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for automatically eliminating or reducing a cloud coverage area by optimizing an effective mosaic polygon based on a quadtree space division thought. The method can beused as one step in a remote sensing image inlaying method. The method is based on an effective mosaic polygon obtained by a seam line network generation method. Effective mosaic polygons of all images can be optimized according to the cloud coverage range, the cloud coverage area in the final mosaic image is removed as much as possible, the utilization rate of image data with cloud coverage is improved, the imaging time period of the image data required for generating the cloud-free mosaic image is shortened, and more current remote sensing image data are provided for various applications.

Description

technical field [0001] The invention belongs to the field of photogrammetry and remote sensing image processing, and relates to a method for optimizing the effective mosaic polygon by using the idea of ​​quadtree space division to remove cloud coverage areas under the premise of obtaining effective mosaic polygons in the mosaic process of remote sensing images. Background technique [0002] Remote sensing technology has been widely used in my country's agricultural and forestry resource investigation, environmental monitoring, combating natural disasters, geology, minerals, and water resources. However, the coverage of a single remote sensing image is often limited, and multiple remote sensing images need to be mosaiced into a remote sensing image covering a larger area. Without any post-processing, generally speaking, the mosaic images obtained have certain cloud coverage areas, and these cloud coverages will lead to loss of information in this area, which brings great limi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): G06T5/00G06T5/50
Inventor潘俊方忠浩
OwnerWUHAN UNIV