Background information and color feature combined fish body detection method

A technology of color features and background information, which is applied in the field of computer vision, can solve the problems of mutual constraints between rapidity and accuracy, constraints between rapidity and accuracy, and less calculation, and achieve shortened target detection time, good versatility, and computational accuracy. Small amount of effect

Inactive Publication Date: 2012-09-19
YANSHAN UNIV
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Problems solved by technology

[0005] In order to solve the mutual restriction between rapidity and accuracy in fish target detection, the present invention is based on the background subtraction method with the least amount of calculation. Based on the background subtraction method, color features are combined for threshold processing, which can

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  • Background information and color feature combined fish body detection method
  • Background information and color feature combined fish body detection method
  • Background information and color feature combined fish body detection method

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[0035] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0036] The fish body detection method that fuses background information and color features proposed by the present invention is as follows: figure 1 As shown, the following is divided into six parts to introduce the specific implementation manner.

[0037] (1) Acquisition of background

[0038] After the camera is fixed, the image taken without the fish target is input to the computer as the background image.

[0039] (2) Background subtraction method

[0040]Shoot the fish target image, and use the formula (1) to make a difference with the background image to obtain the preliminary detection image of the fish target. Due to the small amount of calculation and short operation time of the background subtraction method, the preliminary detection image of the target can be obtained quickly, but at this time the image includes Noise p...

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Abstract

The invention provides a background information and color feature combined fish body detection method. The method includes the steps that a computer reads a background image and an image which includes a fish body target; background subtraction is used for calculating the two images so as to obtain an initial fish body moving target, and a plurality of noise points and background information points are included in the images at the moment; in order to obtain the accurate fish body target, information about a red, green, blue (RGB) color model is used for obtaining the RGB color information of the fish body form an original color image, and the image is processed through an (R-B) operator; the processed image target presents a large difference from a background pixel, a histogram is in a bimodal distribution, the peak point of the histogram is found as a threshold value point, the image after the (R-B) processing is subjected to a threshold processing, the pixel larger than the threshold value is the fish body target, and other pixels are ejected; and the image output by the computer at the moment is the final detecting result of the fish body target. The fish body detection method has the advantages of being suitable for fish body detection in the scenes with simple backgrounds and fixed video cameras, good in generality, accurate in detecting target, high in speed, and the like.

Description

technical field [0001] The invention belongs to the technical field of computer vision, in particular to a high-precision method for real-time detection of a fish target, which is suitable for a scene with a relatively simple background and a fixed camera. Background technique [0002] With the rapid development of economy and technology, environmental pollution is inevitable, which leads to the serious greenhouse effect, global warming, and the water environment is deeply affected, becoming the ultimate receiver of pollution. Therefore, how to effectively monitor and manage the environmental quality of water bodies and prevent and control water body pollution has become a problem that countries around the world pay close attention to, and actively pay attention to reliable monitoring and timely early warning of water body quality and water body safety, so that water quality management and The importance of water pollution prevention and control methods is increasingly highl...

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Application Information

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IPC IPC(8): G01C11/00
Inventor 程淑红胡春海张伟涛程树春
Owner YANSHAN UNIV
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