A video tracking method and device for moving creatures
A video tracking and biological technology, applied in cross-fields, can solve problems such as the inability to accurately obtain the actual path of fish swimming, the inability to realize the one-to-one correspondence between coordinates and fish, and limit the normal movement behavior of monitoring objects, so as to break through the bottleneck of multi-target tracking, Easy to promote, test fast results
Active Publication Date: 2022-07-26
PEKING UNIV
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Problems solved by technology
[0003] For the first tracking method, it can only monitor the trajectory of a fish egg or a juvenile fish, and cannot track the movement of fish schools; and this tracking method is not suitable for adult zebrafish or even larger experimental fish species (such as crucian carp), because the smaller glass dish severely limits the normal movement behavior of the monitored subjects
[0004] For the second tracking method, its hardware requirements are relatively high, and multiple real-time monitoring devices need to be set up. When shooting fish schools, the feedback result is the position of each fish at each moment, and it is impossible to realize the coordinates and fish one by one. Correspondingly, it can only reflect the overall distribution changes of the fish school, but cannot track the individual fish, and cannot accurately obtain the actual path of the fish swimming
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[0058] The following will take tracking the movement of the zebrafish group as an example to describe the technical solution of the present invention in more detail.
[0059] 1) Use a mobile phone or other electronic device to shoot a video of fish swimming (the horizontal direction in the shooting field is represented by x, and the vertical direction is represented by y), as the original video for subsequent analysis, and its resolution can be determined by the file Attribute check (denoted as a×b), the unit is px;
[0060] 2) The actual distance L (or R) between any two points in the x direction (or y direction) in the video is manually measured (or known), and the unit is mm;
[0061] 3) Manually enter L (or R) and a (or b) in the program;
[0062] 4) The program automatically preprocesses the original video obtained in 1) and converts it into a binary image video, so that each fish in the video forms a clear outline. The binary image video and the original video are set ...
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The invention discloses a video tracking method and device for moving creatures. The method can automatically identify the real-time position of the moving creatures in a video, track and draw the swimming trajectory of each moving creature, finally generate the cumulative motion trajectory map of all the moving creatures, and calculate the passage of all the moving creatures during the video shooting time. the actual total path distance. Compared with the traditional method, the present invention not only breaks through the bottleneck of multi-target tracking of moving creatures, but also realizes fast and automatic analysis of videos simply shot by mobile phones or other electronic devices, and has the advantages of simple operation, fast testing, easy promotion and tracking. It has the advantages of strong, high degree of visualization, and rich feedback information.
Description
technical field [0001] The invention adopts the computer video tracking and capturing method to realize the video tracking of the behavior of moving organisms such as the model organism zebrafish in environmental science research, and belongs to the invention in the cross field. The invention relates to video preprocessing, real-time tracking and labeling of moving creatures, real-time statistics of pixel points accumulated by all moving creatures, automatic generation of cumulative trajectory map, and automatic automatic generation of the actual total path distance traveled by all moving creatures. calculate. Background technique [0002] In the field of environmental science research, zebrafish are often used as model organisms to study the toxicity of pollutants. Motion tracking technology of zebrafish during experiments is crucial for its behavioral studies. At present, there are mainly two common zebrafish tracking techniques. One is to study the movement of a zebraf...
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IPC IPC(8): G06T7/246
CPCG06T7/246G06T2207/30241G06T2207/10016
Inventor 万祎刘航彭超崔洪洋高世雄
Owner PEKING UNIV