Virtual reality system free viewpoint switching method

Abstract

The invention discloses a virtual reality system free viewpoint switching method. The virtual reality system free viewpoint switching method comprises the following steps: firstly, space coordinates are established for an initial viewpoint and a terminate viewpoint with a target object serving as the center; secondly, N transition viewpoints are inserted between the initial viewpoint and the terminate viewpoint, wherein N=1, 2, 3..., and the viewpoints are inserted through the following method; thirdly, a spherical model is established according to the coordinates of the initial viewpoint and the coordinates of the terminate viewpoint, wherein a radius-invariable spherical model or a radius-gradual-change spherical model is selected as the spherical model; fourthly, coordinate values of the transition viewpoints are calculated according to the spherical model, so that a viewpoint switching path from the initial viewpoint to the terminate viewpoint is obtained. According to the virtual reality system free viewpoint switching method, the complexity of transition viewpoint coordinate calculation on a circular arc between two points is lowered through an outer trackball; the radius-gradual-change spherical model is adopted with respect to different distances from a three-dimensional scene (the target object), so that smooth viewpoint switching is realized.

Description

technical field [0001] The invention relates to the field of display, in particular to a method for switching free viewing angles of a virtual reality system. Background technique [0002] In the 3D virtual reality system, for the objects in the scene, it is often necessary to obtain images of different perspectives from different viewpoints to meet the needs of users. When switching from one viewpoint to another, when the difference in viewpoint position is relatively large, image jumping will occur. The existing method is to directly transform between these two viewpoints, causing the scene transformation to be discontinuous and resulting in a jumping effect. Some methods achieve smooth switching of viewpoints by adding transitional viewpoints, but the algorithm of viewpoint transformation trajectory is complicated, the calculation time is long, and the requirements for hardware are relatively high. Contents of the invention [0003] In order to solve the above-mention...

AI Technical Summary

Problems solved by technology

The existing method is to directly transform between these two viewpoints, causing the scene to change discontinuously, resulting in a jumping effect

Some methods achieve smooth switching of viewpoints by adding transitional viewpoints, but the algorithm of perspective transformation trajectory is complex, the calculation time is long, and the requirements for hardware are relatively high.

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