摘要
基于遥感影像的铁路工程制图中,山脊与山谷常出现混淆的视错觉现象。为了利用有益的视错觉现象,消除有害的视错觉现象,从视觉空间认知中的纳克立方体入手,研究图形与背景的关系,并通过实验以及工程实践,进一步分析基于遥感影像的铁路工程制图中立体视错觉现象的类型、产生原理及条件,并探讨其应用和校正方法。研究表明:(1)立体视错觉现象在北半球山区遥感影像中普遍存在,以我国地势第一台阶和第二台阶表现较为典型;(2)产生立体视错觉的3种地貌类型为:正弦波形连绵山地区域、台地以及“U”形冲沟;(3)产生立体视错觉的原因包括:日照条件、影像分辨率、图像对比度;(4)水体的立体视错觉分为3种情况(凸出效果、凸出与凹陷混淆效果、凹陷效果);(5)正弦纹形地貌及形台地的遥感影像立体视错觉可以采用DEM渲染法或三维场景法进行校正,“U”形冲沟立体视错觉只能通过三维场景法进行校正。
Remote sensing images and related stereoscopic illusions,such as stereoscopic illusion,often confuses engineers and technicians.In order to utilize the beneficial illusion and eliminate the harmful one,this paper studied the relationship between graphics and background from the Necker Cube in visual psychology.Through experiments and engineering practice,this paper further analyzed the types,principles and conditions of stereoscopic illusion in remote sensing image railway engineering mapping,and discussed its application and correction methods.The conclusions are as follows:(1)Stereoscopic illusion is common in remote sensing images of mountainous areas in the northern hemisphere,and the first and second steps of terrain in China are typical.(2)The three geomorphic types that produce stereoscopic illusion are:sinusoidal continuous mountain area,“Π”platform and“U”gully.(3)The causes of stereoscopic illusion include sunshine conditions,image resolution and image contrast.(4)The stereoscopic illusion of water body can be divided into three situations:bulge effect,confusion effect between bulge and depression,and depression effect.(5)The stereo illusion of remote sensing images of sinusoidal topography andΠ-shaped gullies can be corrected by DEM rendering method and 3D scene method,U-shaped gullies can be corrected by 3D scene method only.
作者
杜辉
DU Hui(China Railway Design Corporation,Tianjin 300142,China)
出处
《铁道勘察》
2023年第4期21-26,41,共7页
Railway Investigation and Surveying
基金
中国铁路设计集团有限公司科技开发计划重点课题(2022B02401020)。
关键词
铁路工程制图
遥感影像
立体视错觉
纳克立方体
DEM渲染
railway engineering mapping
remote sensing image
stereoscopic illusion
Necker Cube
DEM rendering
