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Method for locating fingertips of person through video

A positioning method and fingertip technology, applied in the field of video human fingertip positioning, can solve problems such as difficult and universally practical application technology, high equipment price, inability to handle the fingertip facing the camera, etc., so as to save the amount of calculation and improve positioning. Accuracy, good for positioning

Active Publication Date: 2014-01-08
SOUTH CHINA UNIV OF TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Also, they can't handle the situation where the fingertip is facing the camera, where the finger is only a very small area in the image
The 3D modeling method can obtain accurate positioning results, but traditional 3D modeling relies on high-precision cameras such as TOF cameras, or special instruments such as special gloves, etc.
Due to the high price of equipment, this method is difficult to become a universal and practical application technology

Method used

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  • Method for locating fingertips of person through video

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Embodiment

[0032] Such as figure 1 As shown in the figure, after the user's handwriting video is obtained through Kinect, the hand segmentation is performed to separate the hand, the region of interest, from the background. The arm points are obtained by quadratic depth thresholding segmentation method. Then perform three-view projection on the hand on the result of hand segmentation, and use the information of different views to calculate the pixel points of the finger on the result of the projection. Then apply the two peaks that appear in the histogram of the statistical thickness corresponding to the finger and the fist respectively, and select the pixels near the peak with the smaller thickness as the candidate pixels of the finger point. After the candidate finger points are obtained, each candidate point is connected with the center point of the fist and the forearm point to form an included angle, and the candidate finger pixels whose included angle is less than 90° are removed....

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Abstract

The invention discloses a method for locating fingertips of a person through video with a Kinect as a camera shooting tool. The method includes the following steps that (1) a color image and a depth image are obtained from a camera, (2) a hand of the person is partitioned, (3) three-view projection is carried out on the hand, (4) fingers are located, and (5) the fingertips are located. Values of included angles of all finger candidate points and the forearm point at the center of the fist portion are calculated, candidate points with the included angles smaller than 90 degrees are eliminated, and the point, farthest from the center of the fist portion, of the rest of candidate points is selected as the fingertip point. The method has the advantages that large expansion space is provided, the method is suitable for auxiliary identification of universal objects under a depth camera, subsequent calculation quantity is saved, and the final accuracy rate is improved.

Description

technical field [0001] The invention relates to a computer image processing and pattern recognition technology, in particular to a video human fingertip positioning method. Background technique [0002] In recent years, hand-based intelligent human-computer interaction technology has attracted more and more attention due to its flexible and natural characteristics. Compared with traditional technical means that require access to hardware devices, human-computer interaction in the air based on human hands is closer to the core concept of natural human-computer interaction and has a better user experience. The high degree of freedom and flexibility of the fingertips makes it contain richer connotations than other parts of the human hand. Therefore, most of the human-computer interaction technologies involve the positioning of fingertips. [0003] The current technology of fingertip positioning can be generally divided into two methods: the method based on two-dimensional vis...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06T7/00
Inventor 杨维信钟铮杨张鑫王鹏伟熊晨霖金连文
Owner SOUTH CHINA UNIV OF TECH
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