Side-scanning sonar image region-of-interest extracting method based on region growing

A region of interest, side scan sonar technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of considering side scan sonar images from the perspective of regional growth

Inactive Publication Date: 2010-11-17
HARBIN ENG UNIV
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Problems solved by technology

[0004] None of the documents found above considered the segmentation of side-scan sonar images from the perspective o

Method used

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  • Side-scanning sonar image region-of-interest extracting method based on region growing
  • Side-scanning sonar image region-of-interest extracting method based on region growing
  • Side-scanning sonar image region-of-interest extracting method based on region growing

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Embodiment Construction

[0041] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0042] 1. For the original image such as figure 1 As shown in the preprocessing, the main purpose is to smooth and denoise to get figure 2 .

[0043] 2. L-G operator processing figure 2 , to filter out all points whose result is zero, to get image 3 .

[0044] That is, use the following template to filter the preprocessed image, and the point where the result is zero is the point you want to find.

[0045] 0 0 - 1 0 0 0 - 1 - 2 - 1 0 - 1 ...

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Abstract

The invention provides a side-scanning sonar image region-of-interest extracting method based on region growing, which comprises the following steps of: obtaining the seed region of a side-scanning sonar image sound shadow region by adopting an L-G operator, obtaining the seed region of a side-scanning sonar image sound reflecting region by utilizing a neighborhood gray-scale mean value, then considering the similarity of pixel points relative to the seed regions to be used as a growing condition, and respectively obtaining the extraction results of the sound shadow region and the sound reflecting region through region growing to obtain the region-of-interest extraction of a side-scanning sonar image. From a processing result, the method has better effect on the region-of-interest extraction of the side-scanning sonar image.

Description

technical field [0001] The invention relates to a digital image processing method. Specifically, it is a method for extracting regions of interest from side scan sonar images. Background technique [0002] Region-based extraction of regions of interest from side-scan sonar images is one of the important contents of digital image processing applications. In the application field of digital image processing, extracting the region of interest of the side scan sonar image is the premise of subsequent target recognition and classification processing and information extraction. Due to the characteristics of the side scan sonar image itself, the extraction of the region of interest is one of the difficult problems in digital image processing technology. [0003] Literature [1][2][3] are all algorithms related to side scan sonar image segmentation. Literature [1] uses the local variance of the variable neighborhood to extract the target bright area, and uses the fractal dimension ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/00
Inventor 卞红雨罗明愿张志刚
Owner HARBIN ENG UNIV
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