摘要
由于现有的虚拟三维场景漫游方法人机交互响应时间较长,因此设计一种基于VRML的虚拟三维室内场景漫游方法。通过对建模方法的比较,采用几何建模与行为建模两种方法构建基于VRML的三维场景模型,通过纹理映射技术将二维图像映射到三维实体表面,消减场景的复杂度以提高整体的交互性能,最后通过视角变换中的透视投影计算,得到齐次变换矩阵,定位最合适的全景图,完成基于VRML的虚拟三维室内场景漫游方法的设计。通过对比实验结果可知,设计方法在点击鼠标响应时间测试中比传统方法快0.6 s,在变换视角响应时间测试中比传统方法快0.5 s,验证了该文方法的有效性。
As the existing virtual 3 D scene roaming method has a long response time of human-computer interaction,a virtual 3 D indoor scene roaming method based on VRML is designed.By comparing the modeling methods,the 3 D scene model based on VRML is constructed with two kinds of geometry modeling and behavior modeling methods.2 D image is mapped to the surface of the 3 D entity by means of the texture mapping technology to reduce the complexity of the scene,so as to improve the overall interaction performance.The calculation of perspective projection in visual transformation is used to get the homogeneous transformation matrix,and locate the most suitable panoramagram,so that the design of VRML-based roaming method of virtual3 D indoor scene is completed.By comparing the experimental results,it can be seen that the designed method is 0.6 s faster than the traditional method in the response time test of clicking the mouse,and 0.5 s faster than the traditional method in the response time test of changing the perspective.The validity of this method has been verified.
作者
周阳
ZHOU Yang(Suihua University,Suihua 152061,China)
出处
《现代电子技术》
北大核心
2020年第22期75-77,81,共4页
Modern Electronics Technique
基金
国家自然科学基金项目(21201128)
2018年黑龙江省哲学社会科学研究规划项目(18YSE644)。
