Study on movement of the fish body related water pollution based on image processing

Author(s): Zhao XiaoQiang, Chen Wen, Yu YanFei

The contour extraction method of fish body movement is discussed based on the principle of digital image processing.At first, the image is transformed intoHSVspacemodel, and extract value image to analysis and pretreatment. The dynamic threshold method is used to eliminate the interference from nontarget object. Hole filling is used to eliminate tiny holes in fish body. Morphological operation is adopted to solve the narrow breakage phenomenon, also can ensure the final image is in the same size.Experimental results show that this method can extract the contour of fish very well, and then get the growth status andmovement characteristics of aquatic biology, which is effective for biological water quality monitoring and satisfies practical requirement.

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