A method for evaluating ball game behavior based on image processing
A technology of image processing and ball games, applied in the field of image processing, can solve the problems of inaccurate testing, inconvenient use, complex structure, etc., and achieve the effect of improving accuracy
Active Publication Date: 2019-05-28
QIDONG PLANT SERVICE VALVE FACTORY
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Problems solved by technology
[0005] However, the above-mentioned serving training mechanism has problems such as complex structure, inconvenient use, and inaccurate testing. Therefore, in view of this problem, it is necessary to propose a tennis serving behavior evaluation method based on image processing to achieve objective and effective tennis training.
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[0058] Such as figure 1 As shown, the establishment method of the tennis serving behavior evaluation system based on image processing of the present embodiment includes the following steps:
[0059] Step 1: Color-mark the joint points of the serving arm, and collect the tennis serving video through a high-speed camera, as follows:
[0060] Mark the joint points on the player's serving arm in red, such as figure 2 As shown, point A represents the marking point of the wrist close to the racket, point B represents the marking point of the elbow, and point C represents the marking point of the serving arm close to the shoulder. Place the Flare 2M360CCL high-speed camera of IOIndustries on the right side of the subject, 4m-6m away from the tee-off point, and collect the tee-off video at a height of 1.0m-1.6m.
[0061] Step 2: Construct a dictionary from a series of tennis serve images collected with noise, and reconstruct a non-disturbed serve image according to the sparse repre...
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The invention discloses an image processing-based ball game behavior evaluation method, comprising the following steps: step 1: color-mark the joint points of the ball game arm, and collect ball game images; step 2: construct a dictionary from the ball game images , to reconstruct a non-interference serving image; Step 3: Extract the motion foreground from the obtained serve image; Step 4: Extract the marker points for the motion foreground, and search for the outline of the marker points, surround the outline with the smallest circle, and return to the center of the circle The coordinates are used as joint point coordinates; Step 5: Train with the joint point coordinate data extracted from Steps 1 to 4, realize the classification of the ball trajectory, and establish an evaluation system; Step 6: Collect the ball coordinates to be measured by the method of Steps 1 to 4 , the evaluation system that input step (5) obtains is evaluated; The method of the present invention realizes the technical action analysis when the tennis player serves, improves physical training efficiency, improves sports technique, thereby reaches the purpose of auxiliary training.
Description
technical field [0001] The invention belongs to the field of image processing, in particular to an image processing-based evaluation method for ball game serving behavior. Background technique [0002] Human motion analysis based on video is an important research direction in the field of computer vision. It detects moving objects from video sequences, extracts key parts of the human body, obtains useful information about human motion, and realizes further analysis of human motion and posture. and identification. [0003] The traditional tennis serve training mode has been deeply rooted in the current training. For athletes, in order to master technical action essentials proficiently, they must carry out long-term and repeated practice according to the coach's guidance. Using experience-based training methods for a long time, relying solely on coaches to guide and supervise athletes' technical movements, is subjective, and this situation seriously restricts the improvement...
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IPC IPC(8): A63B69/38G06K9/62
CPCA63B69/385G06F18/214
Inventor 汪亚明韩永华周志湖
Owner QIDONG PLANT SERVICE VALVE FACTORY