A method for selecting a freehand gesture motion expression based on a three-dimensional object contour

Abstract

The invention discloses a selection method of freehand gesture motion expression based on three-dimensional object contour, which comprises the following steps: (1) in a preprocessing stage, the contour of each alternative object located in an operator's visual field scene is calculated and generated in real time; (2) free hand gesture inputting, the operator inputs the free hand gesture to the contour of the desired three-dimensional object, and calculates and draws the real-time gesture trajectory graph; (3) contour matching, and real-time contour matching calculation between contour and gesture trajectory of the candidate object generated in the preprocessing stage; (4)the operator confirms that the operator selects and confirms the matching candidate objects by gestures. The inventioncan effectively solve the problem of low identification accuracy caused by small object volume and serious occlusion, and realize high-efficient natural three-dimensional object human-computer interaction which is more in line with user interaction habit and operation characteristics.

Description

technical field [0001] The invention belongs to the technical field of human-computer interaction, and in particular relates to a selection method based on three-dimensional object contour freehand gesture action expression. Background technique [0002] Object selection technology is one of the core technologies in human-computer interaction. In human-computer interaction, before operating an object, it needs to be selected first. With the rapid development of virtual reality technology and augmented reality technology, the selection technology of three-dimensional objects in virtual environment has become a research hotspot in three-dimensional human-computer interaction due to its wide application value. [0003] At present, the existing 3D object selection technology is roughly divided into two categories: pointing interaction technology and grasping interaction technology. The pointing interaction technology is realized through the "ray-casting" process, in which the ...

AI Technical Summary

Problems solved by technology

The advantage of the grasping interaction technology is that it is natural and intuitive, but the disadvantage is that the grasping interaction technology can only select objects close to the operator, and the calculation load of the grasping interaction technology is large, and the research and development of software algorithms is very challenging, because this technology involves computing A large amount of real-time collision detection calculations and the satisfaction of complex human grasping rules

Therefore, both of them are difficult to meet the requirements of natural and efficient selection of 3D objects

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