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Video fingertip positioning method based on Kinect

A positioning method, fingertip technology, applied in the input/output of user/computer interaction, computer parts, graphic reading, etc., can solve the problem of unable to handle the fingertip facing the camera

Active Publication Date: 2013-07-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plus, they can't handle having your fingertip pointed directly at the camera
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 data gloves

Method used

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  • Video fingertip positioning method based on Kinect
  • Video fingertip positioning method based on Kinect
  • Video fingertip positioning method based on Kinect

Examples

Experimental program
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Embodiment

[0064] Such as figure 1 Shown is a block diagram of the system structure of the present invention. After the user's handwriting video is acquired by Kinect, the hand is segmented to separate the region of interest of the hand from the background. After segmentation, ellipse fitting is performed on the palm and palm points are obtained. Then the arm points are obtained by quadratic depth thresholding segmentation method. After that, the system is divided into two modules: "multi-finger positioning" module and "multi-finger positioning" module. In the "Multipoint Positioning" module, polygon fitting is performed on the contour of the hand to remove contour noise. Then calculate its convex shape, and use the fitting polygon and convex shape to form a convex defect. Candidate fingertip points are obtained by calculating the curvature of convex defect vertices. The opponent's part is partitioned and the misjudged fingertips from the previous step are screened out. In the "sing...

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Abstract

The invention provides a video fingertip positioning method based on Kinect, which comprises the following steps: (1), collecting video information; (2), analyzing, processing and segmenting the video information to obtain a hand shape of a user; (3), carrying out ellipse fitting of a palm shape of the user to obtain an ellipse, and taking the center of the ellipse as a central point of the palm shape; (4), positioning an arm point of the user; and (5), positioning fingertips of the user. The positioning method comprises multiple finger positioning and single finger positioning, and has the advantages of excellent robustness, and the like.

Description

technical field [0001] The invention relates to a computer image processing and pattern recognition technology, in particular to a Kinect-based video human fingertip positioning method. The method uses a Kinect sensor as an imaging tool. Background technique [0002] In recent years, intelligent human-computer interaction technology based on human hands has occupied an increasingly important position due to its flexible and natural characteristics. Compared with traditional technical means that require access to hardware devices, it is closer to the core concept of human-computer interaction and has a better user experience. The high freedom and flexibility of the middle fingertips make it contain richer connotations than other parts. Changes in the number and position of fingertips can be mapped to rich semantics. On this basis, a series of applications can be developed, such as virtual writing and drawing, remote gesture control, virtual keyboard, somatosensory games and...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 金连文叶植超张鑫
Owner SOUTH CHINA UNIV OF TECH
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