Depth information-based contour tracing method

A contour tracking and depth information technology, applied in the field of contour tracking based on depth information, can solve the problems of inflexibility and convenience

Active Publication Date: 2011-05-25
TCL CORPORATION
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Problems solved by technology

Although some processing can also be achieved by optical methods or analog techniques, they are far less flexible and convenient than digital image processing, so digital image processing has become the main aspect of image processing

Method used

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] refer to figure 1 A preferred embodiment of the depth information-based contour tracking method of the present invention includes steps:

[0040] S1. Start the depth map acquisition device, monitor the scene area in real time to obtain a depth map sequence, and each depth map in the sequence is a depth frame, such as figure 2 shown;

[0041] S2. After obtaining the current depth frame, judge whether the start-up action has occurred in the previously acquired depth frame. If the start-up action has occurred in the previous depth frame, enter step S7. If the start-up action has not occurred...

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Abstract

The invention provides a depth information-based contour tracing method, which comprises the following steps: A, continuously acquiring depth frames in a scene area; B, judging if a startup action appears before a current depth frame, and entering a step F if the startup action appears before the current depth frame, or entering a step C if the startup action does not appear before the current depth frame; C, judging if a startup action appears in the current depth frame, and entering a step D if the startup action appears in the current depth frame, or returning to the step A if the startup action does not appear in the current depth frame; D, after discovering the startup action, extracting a startup contour area from a depth-changing area in the scene area in the current depth frame; E, working out the arithmetic mean value of all depth values in the startup contour as contour tracing reference information; F, extracting a normalized grey level image from the depth frame according to reference information; G, finding out the peak of the contour in the normalized grey level image; and H, outputting peak motion track information and acquiring the contour tracking reference information again. In the invention, through the determination of a target contour, the contour of a hand of a person can be traced in real time and related motion track information can be output.

Description

technical field [0001] The present invention relates to image processing technology, in particular to a contour tracking method based on depth information. Background technique [0002] Image processing is the technique of analyzing images with computers to achieve desired results. Also known as image processing. The main content of image processing technology includes three parts: image compression, image enhancement and restoration, image matching, description and recognition. [0003] Common processing includes image digitization, image coding, image enhancement, image restoration, image segmentation and image analysis, etc. Image processing generally refers to digital image processing. A digital image refers to a large two-dimensional array obtained by sampling and digitizing with digital cameras, scanners and other equipment. The elements of the array are called pixels, and their values ​​are an integer, called gray values. Although some processing can also be achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 刘纹高付东邵诗强黄卫东
Owner TCL CORPORATION
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