项目名称: 遥感影像虚假地形感知现象自动消除技术研究
项目编号: No.41301519
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 孙明伟
作者单位: 武汉大学
项目金额: 25万元
中文摘要: 虚假地形感知现象是指普遍存在于可见光遥感影像上的,人们通过目视感知的地形信息与真实地形信息完全相反的一种感知错误。在当前数字地球的时代大背景下,以遥感影像作为底图数据的地理信息发布平台(如谷歌地图,百度地图等)已融入普通百姓的日常生活,遥感影像上虚假地形感知现象的存在,对普通公众通过影像地图了解地形信息带来严重影响。在理解可见光遥感成像几何过程、人类视觉理解机制的基础上,研究利用地形晕渲模型、阴影检测与补偿、影像融合与匀光技术对遥感影像进行处理,获取消除虚假地形感知现象的正地貌影像图,为地理信息发布平台提供符合大众视觉习惯的底图数据,研究成果能提高我国高分辨率对地观测系统的大众化服务质量。同时,由于月球等深空探测获取的可见光影像也存在虚假地形感知现象,在深空探测成果对公众发布前,将影像进行适当处理,减少公众因视觉感知错误引起的质疑,能为我国空间科学的发展营造良好的舆论环境。
中文关键词: 虚假地形感知现象;光照改正;C 校正模型;空间细节;光谱特性
英文摘要: False topographic perception phenomenon (FTPP) is a perception error and is widespread in the visual spectrum remote sensing images. People's visual perception terrain information from remote sensing images is completely opposite of real terrain information. As the base map data of geographic information release platform (such as Google Maps, Baidu maps, etc.), remote sensing image has been integrated into the daily lives of ordinary people in the background of digital earth. FTPP of the remote sensing images impact a serious problem on the general public to understanding terrain information through image maps. In the understanding of the remote sensing geometry and mechanisms of human vision, this article study the shaded relief model (SRM), shadow detection and elimination, image fusion and image dodging technology to processing remote sensing images to obtain positive stereo perception images and eliminate false topographic perception phenomenon. This research can improve the quality of service of the high-resolution earth observation systems. FTPP also exist in visual spectrum images of the moon exploration and other deep space exploration project. Processing the deep space exploration result images is necessary to reduce the public visual perception error caused questioned and create a good public opinion
英文关键词: False topographic perception phenomenon;topographic correction;C correction model;spatial details;spectral characteristics