SAR image oil spill detection method based on image significance analysis

A detection method and image technology, applied in the field of remote sensing images and image processing, to achieve high recall and accuracy, and high detection efficiency

Pending Publication Date: 2020-10-30
国家海洋局北海预报中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In view of the shortcomings of the level set method that requires manual initialization, the neural network method needs to provide manually calibrated samples in advance, and

Method used

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  • SAR image oil spill detection method based on image significance analysis
  • SAR image oil spill detection method based on image significance analysis
  • SAR image oil spill detection method based on image significance analysis

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0075] Example 1 A method for detecting oil spill area in SAR image. figure 1 Shown, including:

[0076] Step 1) Obtain saliency images:

[0077] 1.1) Convert the original image from RGB space to Lab space;

[0078] First, use equation (1) to convert the RGB color space of the original image I into XYZ space, and then use equation (2) to convert the XYZ space to Lab space to obtain the Lab space image I corresponding to the original image Lab ;

[0079]

[0080]

[0081] among them,

[0082] 1.2) Gaussian filtering of Lab space images;

[0083] Image I for Lab Space Lab The three components of I L , I a And I b All use a 3×3 Gaussian convolution kernel to filter the filtered image I GLab ;

[0084] Among them, the 3×3 Gaussian convolution kernel is

[0085] 1.3) Take the mean values ​​LM, AM and BM for the images of the three channels of the converted image L, a, and b respectively; and calculate the Euclidean distance for the mean image of the three channels and the image after Gaussi...

Example Embodiment

[0116] Embodiment 2 A method for detecting oil spill area in SAR image, the SAR image is as Figure 4 Shown, including:

[0117] Step 1) Obtain saliency images:

[0118] 1.1) Convert the original image from RGB space to Lab space;

[0119] First, use equation (1) to convert the RGB color space of the original image I into XYZ space, and then use equation (2) to convert the XYZ space to Lab space to obtain the Lab space image I corresponding to the original image Lab ;

[0120]

[0121]

[0122] among them,

[0123] 1.2) Gaussian filtering of Lab space images;

[0124] Image I for Lab Space Lab The three components of I L , I a And I b All use a 3×3 Gaussian convolution kernel to filter the filtered image I GLab ;

[0125] Among them, the 3×3 Gaussian convolution kernel is

[0126] 1.3) Take the mean values ​​LM, AM and BM for the images of the three channels of the converted image L, a, and b respectively; and calculate the Euclidean distance for the mean image of the three channels and...

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Abstract

The invention discloses an oil spill area detection method without human interaction. According to the scheme, SAR image oil spill area detection is carried out based on image significance analysis and an adaptive iterative threshold method. In the scheme, an image saliency detection method is introduced into SAR oil spill detection, and then accurate extraction of an oil spill area is realized byusing the size relationship between an adaptive iterative threshold and saliency.

Description

technical field [0001] The invention relates to the technical fields of image processing and remote sensing images, and in particular, the invention relates to a SAR image oil spill detection method based on image saliency analysis. Background technique [0002] In today's society, oil is still a very important resource. With the increasing scarcity of land resources and the rapid growth of human demand for energy, the offshore oil industry and offshore oil transportation are booming. Oil spill at sea refers to the loss of oil in different degrees during the offshore mining or transportation process, mainly including oil well oil leakage caused in the offshore oil exploration and development process, leakage in near-shore oil pipelines or oil tanker loading and unloading, ship collision Crude oil spills caused by accidents such as , overturning, and grounding, and even oil spills caused by natural disasters. These accidents have polluted the marine ecological environment t...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06T5/00G06T5/20G06T7/00G06T7/11G06T7/136G06T7/194G06T7/90
CPCG06T7/11G06T7/136G06T7/90G06T7/194G06T5/008G06T5/20G06T7/0004G06V10/462
Inventor 靳熙芳万剑华吕新荣任鹏宋彦江伟伟钟山葛磊
Owner 国家海洋局北海预报中心
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