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Hand positioning method and device based on depth image

A positioning method and depth image technology, applied in image analysis, image data processing, character and pattern recognition, etc., can solve problems such as mistracking

Inactive Publication Date: 2018-04-17
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can better determine the position of the hand when the hand is moving, and realize the tracking of the hand, but when the hand is still, it is easy to be affected by noise and cause false tracking.

Method used

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  • Hand positioning method and device based on depth image
  • Hand positioning method and device based on depth image
  • Hand positioning method and device based on depth image

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Embodiment Construction

[0018] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] figure 1 Schematically shows the scene where the hand positioning technology according to the embodiment of the present invention is applied. Such as figure 1 As shown, the user is standing within the imaging range of a stereo camera such as a binocular camera, and the stereo camera takes pictures of the user. When the user moves his / her hand within the range of the camera, a processing device such as a computer can determine position information of the user's hand based on a depth image obtained from images captured by the stereo camera, thereby enabling tracking of the opponent. For example, figure 1 The black dots in show the trajectory of the hand.

[0020] As known to those skilled in the art, a depth image is an image in which the ...

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Abstract

Provided are a method and device for hand positioning based on a depth image. The method includes: determining the main direction of the hand candidate area obtained based on the depth image; searching for the top edge points of the hand along the main direction; and determining the position points of the hand based on each of the top edge points. The hand positioning method and device can accurately locate the position of the hand without being affected by lighting conditions and the shape of the hand.

Description

technical field [0001] The present invention generally relates to hand tracking and positioning, and more particularly relates to a depth image-based hand positioning method and device. Background technique [0002] Hand tracking and localization is a very important and critical part of gesture recognition systems. In order to facilitate user operation, the hand tracking and positioning system should not require the user to wear any special equipment, such as special gloves, colored markers, etc.; in addition, the hand is a non-rigid object with the characteristics of fast movement, easy deformation, and self-occlusion. Therefore, hand tracking and positioning is a very difficult task. [0003] In the past, many researchers used the color feature of the hand as the apparent feature of the hand to track and locate the hand. However, this method is easily affected by lighting conditions. Considering that depth images are less affected by light, more and more researchers are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/32G06T7/246G06T7/277
Inventor 梁玲燕刘丽艳赵颖
Owner RICOH KK