Detection method and system for frozen lake in remote sensing image

Abstract

The invention provides a detection method for a frozen lake in a remote sensing image. The method comprises a texture extraction step, an energy analysis step, and a result output step. At the texture extraction step, texture feature extraction is carried out on a to-be-detected remote sensing image and a fractal dimension graph is obtained. At the energy analysis step, an energy characteristic of a local image block of the fractal dimension graph is analyzed by using a regional contrast ratio and a local entropy feature. At the result output step, a detection result is outputted based on the analyzed energy characteristic. In addition, the invention also provides a detection system for a frozen lake in a remote sensing image. According to the detection method and system, the specific texture characteristics of a frozen lake are analyzed and an interference source is extracted from a background, so that the effect in a low-noise-ratio / signal-to-clutter-ratio scene is good. Moreover, the method can be operated quickly and is easy to program; and the method and system can be applied and operated in various systems in a cross-platform manner.

Description

technical field [0001] The invention relates to the field of remote sensing image processing, in particular to a method and system for detecting frozen lakes in remote sensing images based on analysis of texture and regional energy characteristics. Background technique [0002] The data obtained by the spaceborne remote sensing platform can reflect the electromagnetic spectrum characteristics of ground objects, and are often recorded and stored in the form of images. The remote sensing observation system has the characteristics of wide imaging range, periodic repetition, and real-time quantitative observation, which makes remote sensing images, especially high-resolution remote sensing images, an important class of spatial information resources. The space infrared satellite imaging system is an important part of the earth observation remote sensing system. For the space infrared satellite imaging system, there are a large number of interference sources with high radiation en...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a remote sensing image frozen lake detection method and its system, which aims to extract the region of interest in the image by calculating and analyzing various local energy parameters of the fractal dimension map of the input image, So as to solve the problem of detecting interference sources of frozen lakes under the ground observation imaging of space infrared satellites

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