Candidate Region Detection Method for Sea Vessels Based on Visual Saliency

Abstract

The invention discloses a method for detecting candidate areas of sea ships based on visual saliency, comprising: step 1, using FT visual saliency model to obtain frequency-domain feature maps of optical remote sensing images containing sea ship targets; step 2, using Scharr edge The detection operator obtains the edge gradient feature map of the optical remote sensing image; Step 3, uses the Gaussian mixture function to fuse the frequency domain feature map and the edge gradient feature map to obtain the fusion feature map; Step 4, based on the otsu adaptive threshold segmentation algorithm, the The fusion feature map is binarized, which is used to extract the area containing the ship target from the image, and obtain the candidate area of ​​​​the sea ship. Integrating the advantages of FT visual saliency model and Scharr edge detection operator in sea ship detection, it effectively suppresses the influence of background noise and highlights ship targets of all scales, making the candidate area extraction results more accurate; the fusion model extracts sea ships The detection speed of the candidate area is fast.

Description

technical field [0001] The invention relates to a visual saliency-based detection method for candidate areas of ships on the sea surface, which belongs to the technical field of image processing. Background technique [0002] At present, countries all over the world are paying more and more attention to the protection of their maritime interests. Due to the advantages of large observation area, periodic revisit and no national boundaries, optical remote sensing satellites have gradually become an important technology for detecting ships on the sea surface based on optical remote sensing images of optical remote sensing satellites. It is an important monitoring method for countries to monitor the situation at sea, and it is widely used in humanitarian rescue and combating illegal maritime activities such as drug trafficking and illegal fishing. [0003] Traditional ship detection methods usually use a sliding window to traverse the entire optical remote sensing image to extra...

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