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Flowage line extracting method based on Canny edge detection and active contour model

An active contour model and extraction method technology, applied in the field of image processing, can solve the problem of weak edge insensitivity, and achieve the effect of improving the evolution speed, strong reliability and high precision

Inactive Publication Date: 2013-05-29
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a water edge extraction method based on Canny edge detection and active contour model, to solve the problem that many current water edge extraction methods are not sensitive to weak edges

Method used

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  • Flowage line extracting method based on Canny edge detection and active contour model
  • Flowage line extracting method based on Canny edge detection and active contour model
  • Flowage line extracting method based on Canny edge detection and active contour model

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[0089] 1) Aerial image experiment

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Abstract

The invention relates to a flowage line extracting method based on Canny edge detection and active contour model, and belongs to the technical field of image processing. According to the characteristics of GAC (Grammar Applicative and Cognitive) model and edge detection operator extracting, the Canny edge detection result is integrated into the reconfiguration boundary stop function of GAC model. Compared with the traditional GAC model, the method is more reliable, and even at the weak edge of flowage line and the severe depressed position, the ideal extracting effect can be obtained. As the method inherits the characteristic of high accuracy of Canny edge detection, the extracting accuracy is high. Due to an improved curve evolution speed, the extracting efficiency is higher than that of the traditional GAC model.

Description

technical field [0001] The invention relates to a water edge extraction method based on Canny edge detection and an active contour model, belonging to the technical field of image processing. Background technique [0002] Within a certain range (area) of the coastal zone or island reef, the coastline (the trace line of the multi-year average high tide surface and the coast), the water edge line (the instantaneous water line at the moment of photography), and the zero-meter line (also known as the zero-meter isobath line) , that is, the theoretical depth datum from which the water depth is calculated and the boundary line of the coast) are all lines with equal water levels (heights), collectively referred to as isowater lines. [0003] The extraction of isowater line information can be divided into three methods based on remote sensing images, based on tidal models, and based on the combination of remote sensing images and tidal models. Among them, the technology of water edg...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 张保明郭海涛卢俊陈小卫张宏伟刘志青贺宏徐俊峰
Owner THE PLA INFORMATION ENG UNIV
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