Fixing an illusion–an empirical assessment of correction methods for the terrain reversal effect in satellite images
作者机构:Department of GeographyUniversity of ZurichZurichSwitzerland FHNW University of Applied Sciences and Arts NorthwesternZurichSwitzerland
出 版 物:《International Journal of Digital Earth》 (国际数字地球学报(英文))
年 卷 期:2020年第13卷第10期
页 面:1135-1150页
核心收录:
学科分类:08[工学] 0812[工学-计算机科学与技术(可授工学、理学学位)]
主 题:Terrain reversal effect satellite images correction methods shaded relief map stereoscopy motion
摘 要:Identifying land forms and land cover classes are important tasks in image ***,a phenomenon called terrain reversal effect(TRE)causes an inverted perception of 3D *** this inversion occurs,valleys appear as ridges and vice *** the TRE can severely impair the ability to identify 3D land forms,‘correcting’for the TRE in imagery can introduce new ***,one of most commonly-proposed methods–shaded relief map(SRM)overlay–appears to impair the ability to identify land cover *** this paper,we report a comparative empirical evaluation of an SRM overlay solution,and its‘enhanced’versions supported by various other cues(stereopsis,motion,labels).In response to the different solutions,we measure the effectiveness,efficiency,confidence and preferences of our participants in land form and land cover identification *** examined methods significantly improve the ability to detect land forms accurately,but they also impair the ability to identify the land cover classes to different ***,participants’visualization preferences contradict their performance with them,calling for reflection on the visual effects of the applied correction *** on the study,recommendations concerning the correction of the TRE are drawn,and gaps are identified.