摘要
为了改善全景地图的可视效果,通过分析远近视野局部地形变形特征,提出了基于液化变形的地形水平局部变形方法,改善近视野的地形局部遮挡现象;利用视线追踪的地形局部降低方法和高斯变换的地形局部抬高方法,改善远视野的地形局部遮挡及地物缩小现象,避免了视野中地形的扭曲重叠,减小了由于透视投影所造成的地物遮挡及缩小现象,增强了全景景观地图的艺术视觉效果,并提高了生成全景图的算法效率。
Panoramic maps are usually used to show the landscape from a specific direction and viewing height in a central perspective projection. Regardless of the direction and height, some landscape features may be obscured. In order to improve the visual effect of panoramic maps, a method for local terrain deformation in the horizontal direction based on liquefaction deformation is proposed. This method for reducing local terrain elevation is based on eye tracking, a method that raises the local terrain elevation using a Gaussian trans- form. This method reduces occlusion and shrinkage phenomenon, enhancing the artistic vis- ual effects of a panoramic map.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第11期1335-1338,1343,共5页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(41271453)
关键词
全景景观地图
地形局部变形
液化变形
高斯变换
视线追
panoramic maps
local terrain distortion
liquefaction deformation
Gaussian transform
gaze tracking
