Content-sensitive virtual path redirection method

Abstract

The invention provides a content-sensitive virtual path redirection method, which is the first path redirection method considering visual features. According to the method, various visual features of the three-dimensional virtual scene are extracted and considered. The method comprises the following three steps: extracting a set of viewpoint-related and viewpoint-unrelated visual features of a virtual scene and storing the set in a visual feature map; then, according to deformation sensitive factors obtained from the visual feature map, through proton spring system optimization, deforming a walking path of a scene, and realizing a redirection effect to adapt to limitation of a physical positioning space; and finally, when the user roams the virtual scene on the redirected path, using a novel detail reservation rendering algorithm to reserve original scene details. Compared with a path redirection method without feature guidance, the method of the invention is tested on multiple scenes, and the result shows that the method has less distortion of the three-dimensional grid of the virtual scene and better user realistic experience.

Description

technical field [0001] The invention relates to a content-sensitive virtual path redirection method. Background technique [0002] Simulating natural walking in large virtual environments remains a challenge due to the presence of obstacles and space constraints in the real world. Therefore, some researchers have proposed a path redirection method, which can modify the user path in the virtual environment, allowing users to roam in the virtual scene while obeying the physical constraints of the real space. Path redirection methods are mainly divided into static mapping and dynamic mapping. [0003] In the process of dynamically reorienting walking, the program changes the visual input provided to the user through slight scene rotation and translation, giving the user the illusion of walking in a large space, thereby avoiding interference from physical obstacles. The challenge of dynamically redirecting walking is to design manipulations of the user's position and orientati...

AI Technical Summary

Problems solved by technology

[0005] The existing method does not analyze the content of the virtual scene, but in the present invention, we take the content information of the virtual scene into consideration, and we propose a content-sensitive virtual path redirection method, aiming at reducing visual details Distortion in the area of ​​the virtual environment, providing a high-quality visual exploration experience for the user when roaming in the virtual environment

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