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Object motion pattern recognition method and device based on depth image sequence

A technology of depth images and motion patterns, applied in character and pattern recognition, instruments, computing, etc., can solve the problems of unsuitable gesture recognition, blurred depth map, affecting shape accuracy, etc., and achieve the effect of effective motion or action recognition.

Active Publication Date: 2016-07-06
RICOH KK
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because motion can cause blurring of the depth map, thereby affecting the accuracy of the shape, the method is limited to shape description, making it unsuitable for motion gesture recognition

Method used

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  • Object motion pattern recognition method and device based on depth image sequence
  • Object motion pattern recognition method and device based on depth image sequence
  • Object motion pattern recognition method and device based on depth image sequence

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Embodiment Construction

[0025] Embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0026] figure 1 It is a schematic diagram exemplarily showing the application environment of the object motion pattern recognition method and device based on the depth image sequence according to the embodiment of the present invention.

[0027] refer to figure 1 , the embodiment of the present invention can be applied to human-computer interaction. The person and his gesture 10 are captured by the depth camera 11 and sent to the computer system 12 for recognition and control. The final recognition and response can be displayed on a local or remote screen. Wherein, the depth camera 11 may be an infrared camera capable of acquiring a depth image of a scene. The computer system 12 can be a personal computer (PC) or any other computer with data processing capabilities, a server or a digital signal processor (DSP), etc. For the depth image sequence acquired and import...

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Abstract

A method for object motion pattern recognition based on depth image sequences is proposed, which includes: a foreground determination step, which determines the foreground object area in each frame of depth image; a difference step, which calculates the depth value of each pixel in each frame of depth image and its neighbor pixels. The difference between depth values ​​is used to obtain the neighborhood depth value difference vector; the quantization encoding step determines the area of ​​interest based on the foreground object area, and quantizes and encodes the neighborhood depth value difference vector of each pixel in the area of ​​interest into a neighborhood depth value. Differential coding; the region division step, divides the area of ​​interest into multiple sub-regions; the distribution description step, based on the neighborhood depth value differential code of each pixel, obtains the neighborhood depth value differential code distribution feature vector of the sub-region; the identification step, based on The combination of neighborhood depth value differential code distribution feature vectors identifies the motion pattern of the object corresponding to the area of ​​interest. Correspondingly, an object motion pattern recognition device based on depth image sequences is also proposed.

Description

technical field [0001] The invention relates to an object motion pattern recognition method based on a depth image sequence and an object motion pattern recognition device based on a depth image sequence. Background technique [0002] With the development of computer vision, image processing, and human-computer interaction technology, there are more and more technical requirements for vision-based human-computer interaction systems, such as interactive projectors, interactive displays, interactive electronic whiteboards, and somatosensory game consoles. More urgently, in these application areas, not only the recognition of objects in images is often required, but also the recognition of object motion patterns. In this regard, certain progress has been made in related technical fields. [0003] Patent Document 1 (US7274800B2) proposes a technique of using a depth disparity map generated by a stereo camera and performing gesture recognition based on the depth disparity map. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06K9/00
Inventor 章鹏李滔熊怀欣
Owner RICOH KK
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