A Zebrafish Tracking Method Based on Video Image
A video image, zebrafish technology, applied in the field of information, can solve problems such as poor accuracy and stability, and achieve the effect of accurate tracking and strong robustness
Inactive Publication Date: 2017-06-20
CHUXIONG NORMAL UNIV
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This method can track a large number of zebrafish at the same time, but the tracking accuracy and stability are not good
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[0031] The technical scheme of the present invention includes two parts: target detection and target tracking; among them: target detection includes four steps: motion area segmentation, centerline extraction, fish head endpoint detection and fish head direction calculation; target tracking includes cost function calculation and global optimization correlation Two steps; as follows:
[0032] (1) Target detection
[0033] a. Motion area segmentation: Since laboratory scenes generally only contain moving zebrafish and static backgrounds, and most zebrafish only stay in one area for a short time, the median filtering method based on time domain can be used Model the background to obtain the motion area. First, the median image of the first n frames of the video is selected as the background image, and then the motion area in the image can be segmented by thresholding the difference image between the background image and the input image.
[0034]
[0035] In the above formula I t (x,y)...
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The invention discloses a zebra fish tracking method based on video images and belongs to the technical field of information. According to the method, fish heads of zebra fishes are detected according to the shape features of the zebra fish images, the direction of the fish heads is calculated according to the gray level distribution of the fish head area, relevance is conducted on targets between adjacent frames through a global optimization method according to the detected position and direction information, and tracking of the zebra fishes is completed. The method includes target detecting and target tracking. The target detecting includes the steps of motion area dividing, central line extracting, fish head end point detecting and fish head direction calculating, and the target tracking includes the steps of cost function calculating and global optimization relevance. The zebra fish tracking method has the advantages that the position and direction information of the fish heads can be detected at the same time, and the detecting accuracy is high; a motion model is not needed for conducting motion detecting on the fishes, and the tracking process is simplified; the shielding problem of the fishes in the motion can be well solved, and the tracking stability is high; the problems occurring in tracking of the zebra fishes can be well solved, and the advantages that tracking is accurate, and robustness is high are achieved.
Description
Technical field: [0001] The invention relates to a zebrafish tracking method based on video images, and belongs to the field of information technology. Background technique: [0002] With the development of computer vision technology in recent years, zebrafish behavior analysis based on video images has become a hot research problem. To analyze the behavior of zebrafish, you must first obtain the trajectory information of each swimming zebrafish, and then perform statistical analysis on this information to discover the movement laws of various zebrafish, which directly affects the robustness and accuracy of the tracking system The effect of behavior analysis. Therefore, zebrafish tracking is a key step in zebrafish behavior analysis. Because the zebrafish's body structure is non-rigid, its shape will continue to change. In addition, zebrafish occlude each other during swimming, and these problems bring great difficulties to zebrafish tracking based on video images. [0003] At ...
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IPC IPC(8): G06T7/215
Inventor 钱志明秦海菲刘晓青赵勇超
Owner CHUXIONG NORMAL UNIV