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Fingertip detection method and device based on palm ranging

A technology of fingertip detection and palm center, which is applied in character and pattern recognition, instruments, computer components, etc., and can solve the problem of low detection accuracy of fingertip detection

Inactive Publication Date: 2014-01-29
TCL CORPORATION
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fingertip detection method and device based on palm distance measurement, aiming at solving the problem of low detection accuracy of the existing fingertip detection.

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  • Fingertip detection method and device based on palm ranging
  • Fingertip detection method and device based on palm ranging
  • Fingertip detection method and device based on palm ranging

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Embodiment Construction

[0062] The present invention provides a fingertip detection method and device based on palm distance measurement. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0063] see figure 1 , figure 1 The flow chart of the first preferred embodiment of the fingertip detection method based on palm distance measurement provided by the present invention includes the following steps:

[0064] Step S100, performing denoising processing on the collected original image containing gestures, and judging the connected domains of the denoised images through flood filling method to find out the gesture connected regions;

[0065] Step S200, traversing the edge p...

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Abstract

The invention discloses a fingertip detection method and device based on palm ranging. The method includes marking initially screened fingertip points after cluster, corroding the gesture communicating area, extracting the centroid of the palm area after corrosion, making a circumcircle on the palm area after corrosion, and acquiring the radius of the circumcircle; calculating a first ratio of distance between an initially-screened fingertip point to the centroid and the radius of the circumcircle, and comparing the first ratio with a preset first threshold; when the first ratio is smaller than the first threshold, determining the corresponding initially-screened fingertip point to be a false minutiae point and filtering; when the first ratio is larger than or equal to the first threshold, determining the corresponding initially-screened fingertip point to be a detected fingertip point; and outputting detection results. Thus, detection accuracy of real-time fingertip detection is improved, and fingertip false detection rate is decreased.

Description

technical field [0001] The invention relates to the field of machine vision recognition, in particular to a fingertip detection method and device based on palm distance measurement. Background technique [0002] In the existing fingertip detection, after the gesture is generally tracked by a certain tracking algorithm, the hand connected domain is retained after image opening and closing operations, binarization processing and connected domain judgment, and then the fingertip point is searched. Then calculate the curvature of the edge points through the curvature method, mark the larger curvature point, and set it as a possible fingertip point position, and then filter out the fingertip points through various methods such as clustering. However, in the actual machine vision recognition of gestures, due to the large degree of freedom of movement of the human hand and the large change in shape, it is often the case that some small bumps are misjudged as fingertips due to insuf...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/40
Inventor 黄阿云邵诗强
Owner TCL CORPORATION
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