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A Ship Extraction Method Based on Wireframe Model

A technology of wireframe model and extraction method, which is applied in character and pattern recognition, image analysis, image enhancement, etc. It can solve problems such as inability to extract two line segments, missing detection, and poor detection effect, so as to improve the recall rate and accuracy, reduce the missed detection rate, and have a wide range of applications

Active Publication Date: 2017-10-24
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More and more high-resolution remote sensing images are used for ship extraction, but the current ship extraction methods mainly have problems: Generally, they can only be effectively extracted for larger ships that can extract texture information. ships in the background, the detection is poor
However, line extraction sometimes cannot extract the two line segments that make up the bow of the ship, resulting in missed detection

Method used

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  • A Ship Extraction Method Based on Wireframe Model
  • A Ship Extraction Method Based on Wireframe Model
  • A Ship Extraction Method Based on Wireframe Model

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Embodiment Construction

[0036] In order to make the object, technical solution and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] In this paper, "high-resolution remote sensing images" are referred to as "remote sensing images" for short.

[0038] The flow chart of step 1~3 of the present invention sees figure 1 , see the flow chart of step 4 Figure 4 , the implementation steps of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] Step 1, remote sensing image preprocessing, threshold segmentation and line extraction.

[0040] Step 1.1 Preprocessing of remote sensing images.

[0041] The preprocessing of remote sensing images is a conventional ...

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Abstract

The invention provides a ship extraction method based on a wireframe model, comprising steps: S1, preprocessing of remote sensing images, threshold segmentation and line extraction; S2, detecting candidate ships by using ship models; S3, verifying candidates by using detection masks Ships; S4, using SVM to reclassify non-candidate ship regions, and then repeating S2~S3. The invention can reduce the missed detection rate and improve the recall rate and accuracy rate of ship detection; in addition, the invention is not limited to the size and texture of the ship, can detect various types of ships, and has a wide range of applications.

Description

technical field [0001] The invention relates to the technical field of high-resolution remote sensing image target extraction, in particular to a wireframe model-based ship extraction method. Background technique [0002] In order to better monitor and manage nearshore and offshore vessels, provide information for military operations more effectively, and combat illegal fishing, the related issues of vessel extraction are currently urgent problems to be solved. More and more high-resolution remote sensing images are used for ship extraction, but the current ship extraction methods mainly have problems: Generally, they can only be effectively extracted for larger ships that can extract texture information. Ships in the background are not well detected. For these problems, methods based on line features can be effectively solved. [0003] At present, there are mainly three types of methods for ship extraction from high-resolution remote sensing images: texture-based, salienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/12G06T7/136G06K9/46G06K9/62
CPCG06T2207/10032G06V10/44G06F18/2411
Inventor 姚剑韩诗瑶张瑞倩鲁小虎李礼李寅暄
Owner WUHAN UNIV