A sea antenna detection method based on image partitioning and texture features

A sea-antenna detection and texture feature technology, applied in the field of image processing, can solve the problem of being distributed between clouds or ripples, and achieve the effect of reducing the amount of calculation, reducing the impact, and avoiding interference

Inactive Publication Date: 2019-01-18
SHANGHAI UNIV
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However, these methods all obtain candidate points through global search and judgment on the entire image. The selection of candidate points is related to the edge features of the image. Therefore, many interference points in sea s...

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  • A sea antenna detection method based on image partitioning and texture features
  • A sea antenna detection method based on image partitioning and texture features
  • A sea antenna detection method based on image partitioning and texture features

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[0052] A sea antenna detection method based on image division and texture features disclosed in the present invention will be described below with an example. The present embodiment adopts C++ programming language and OpenCV storehouse to realize, and concrete implementation steps are as follows:

[0053] (1) Obtain the original color sea surface image;

[0054] The original sea surface image is a 3-channel 24-bit color image with a resolution of 528×938, such as figure 2 as shown in a;

[0055] (2) Convert the original color image to a grayscale image;

[0056] Convert a 3-channel 24-bit color image to an 8-bit grayscale image, such as figure 2 as shown in b;

[0057] (3) Gaussian filter processing is carried out to the grayscale image;

[0058] Use a 3×3 mask to scan each pixel in the grayscale image in the order from left to right and top to bottom, and use the weighted average of the pixels in the area determined by the template to replace the gray value of the pixe...

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Abstract

The invention discloses a sea antenna detection method based on image division and texture features, comprising the following steps: 1) obtaining a color sea surface image; 2) converting the originalcolor image into a gray-scale image; 3) carrying out Gaussian filtering processing on the gray-scale image by using a Gaussian filtering frame; 4) uniformly dividing the filtered image into a plurality of regions along the vertical direction, respectively calculating the gray level co-occurrence matrix and the contrast parameters of the gray level co-occurrence matrix with the distance between thepoint pairs being 1 vertically downward in each region direction; 5) calculating the ratio of the contrast of the co-occurrence matrix of each region and the previous region, wherein the region withthe lar ratio is the region where the sea antenna is located; 6) calculating the gradient in the vertical direction of the selected region, obtaining a threshold value by using a maximum inter-class variance method, and taking pixel points whose gradient value is great than the threshold value as candidate points for straight line detection; 7) hough transform straight line detection is carried out, and that best straight line detect is sea antenna. The method of the invention can effectively detect the position of sea antenna in sea surface image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a sea antenna detection method based on image division and texture features. Background technique [0002] Sea antenna detection is an important part of maritime navigation and unmanned detection on the sea surface. With the increasing application of unmanned ships in sea surface patrol and sea search and rescue, image processing technology is also increasingly applied to sea surface detection. Among them, sea antenna detection is of great significance in sea surface detection. The sea surface image can be divided into seawater and sky through sea antenna detection, which narrows the search range for further target detection, which is of great significance for reducing the calculation amount of follow-up work. At the same time, the sea antenna detection divides the image area into two parts, which can eliminate the influence of sky clouds, haze and background on the co...

Claims

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Application Information

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IPC IPC(8): G06T7/13G06T7/187
CPCG06T7/13G06T7/187G06T2207/10024G06T2207/20024G06T2207/30181
Inventor 李恒宇杨万辉刘靖逸谢少荣罗均
Owner SHANGHAI UNIV
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