Video object tracking cutting method using Snake profile model
A technology of video objects and contour models, applied in image analysis, image data processing, instruments, etc., can solve the problems of failure, segmentation error transmission, expansion, complex calculation, etc., and achieve the effect of high speed and high precision
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[0029] The present invention adopts the video tracking segmentation method of Snake outline model as figure 1 shown, including the following steps:
[0030] Step 1: Improve the greedy method of Snake in the airspace.
[0031] The improvement idea is: when updating the control point to the new contour point, the contour points outside the initial contour are eliminated and replaced with the gradient edge point with the closest Euclidean distance to the current contour point; the improved Snake greedy method Specific steps are as follows:
[0032] Step1: For each control point i, find the maximum and minimum gradient value Grand in its M neighborhood max , Grand min ;
[0033] Step2: Calculate the curvature energy E of the control point i and its adjacent points curvature (i),E curvature_max , continuous energy E continuity (i),E continuity_max and internal gradient energy E grandInter (i);
[0034] Step3: Normalize the energy value, the specific formula is as follows:...
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