Parallax-based three-dimensional trajectory tracking method of fish movement
A technology of three-dimensional trajectory and parallax method, which is applied in the field of computer vision, can solve the problems that there is no three-dimensional depth information, the characteristics of fish movement cannot be accurately described, and the movement trajectory of fish cannot be accurately and effectively reflect water quality changes.
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[0044] 1. Camera Calibration
[0045] After the binocular camera is fixed, first calibrate the binocular camera to obtain the internal parameters and external parameters of the left and right cameras. The calibration results are as follows: figure 2 shown;
[0046] 2. Image acquisition
[0047] The calibrated left and right cameras simultaneously and continuously shoot 70 frames of images, and store them in the computer. The shooting results of the left and right cameras are as follows: image 3 shown;
[0048] 3. Image preprocessing
[0049] Perform the following operations on the images obtained in step 2 in sequence:
[0050] Perform grayscale processing, turning the color image into a grayscale image;
[0051] Perform binarization to convert the grayscale image into a black and white image;
[0052]Carry out expansion and erosion processing of morphological operations, use structural elements to perform open operations to eliminate parts of the image background that...
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