Evaluation method for ball serving behaviors 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: 2017-07-21
QIDONG PLANT SERVICE VALVE FACTORY
View PDF5 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0058] like 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 represen...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an evaluation method for ball serving behaviors based on image processing. The method comprises the steps that (1) color marking is conducted on a joint point of a ball serving arm, and ball serving images are collected; (2) a dictionary is established according to the ball serving images, and a ball serving picture without interference is reestablished; (3) a motion foreground is extracted aiming at the acquired ball serving picture; (4) the marking point is extracted aiming at the motion foreground, the marking point outline is searched, the outline is surrounded by a minimum circle, and circle center coordinates are returned and taken as coordinates of the joint point; (5) the joint point coordinate data extracted by steps (1), (2), (3) and (4) is used for training, ball serving tracks are classified, and an evaluation system is established; and (6) to-be-measured ball serving coordinates are collected by the method of steps (1), (2), (3) and (4) and are input into the evaluation system obtained by the step (5), so the evaluation can be achieved. The method disclosed by the invention has the advantages that technical action analysis of tennis player's ball serving is achieved; sports training efficiency is increased; sports techniques are improved; and thus, training assistance is achieved.
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...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More 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