Method and system for extracting and tracking cursor point in out-of-focus video

A cursor point and video technology, applied to TV system parts, color TV parts, TV, etc., can solve the problems of missing cursor point in the middle frame, inaccurate positioning, strong dependence on image quality, etc., and achieve pattern resolution Effects with irregular shapes and low noise sensitivity
CN103533242AActive Publication Date: 2014-01-22SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Publication Date
2014-01-22

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Abstract

The invention relates to a method and a system for extracting and tracking a cursor point in an out-of-focus video. The method comprises the following steps that a, a first frame of image of the out-of-focus video is imported; b, one or several image regions are defined in the first frame of image to be used as cursor point searching region(s), and each searching region is used as a sub image of the integral image for extracting the cursor points, and in addition, the center coordinates of the cursor point are obtained; c, a next frame of image of the out-of-focus video is imported; d, the sub images are divided from the next frame of image; e, the cursor point is extracted from each sub image, and in addition, the center coordinates of the cursor point are obtained; f, the obtained center coordinates of the cursor point are modified, and the modified center coordinates of the cursor point are output; g, the searching region is updated; h, the step c to the step g are repeated until the last frame of image is searched. The invention also relates to a system for extracting and tracking the cursor point in the out-of-focus video. The method and the system provided by the invention have the advantages that the mistake identification rate and the miss identification rate can be educed, and the data precision is improved.
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Description

technical field

[0001] The invention relates to a method and system for extracting and tracking a cursor point in an out-of-focus video. Background technique

[0002] Computer vision is an important branch of computer science and artificial intelligence. The ultimate goal of research is to enable computers to observe and understand things through acquired images like humans. Human motion capture is a fast-growing and highly concerned frontier in the field of computer vision. It is an important technology combining computer vision and biomechanics. It is widely used in film and television special effects, animation production, game production, virtual reality, and sports training. , biomechanical analysis and other fields.

[0003] Human body motion capture is the process of recovering human body posture parameters from image sequences captured by one or more cameras (the posture here refers to the movement of the torso, limbs and head, excluding small-scale movements such a...

Claims

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