文章基本信息

标题：Automatic extraction of foreground objects from Mars images
本地全文：下载
作者：Shuliang WANG ; Chang LIU ; Shangru WU 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2012
卷号：15
期号：1
页码：17-25
DOI：10.1080/10095020.2012.708147
出版社：Taylor and Francis Ltd
摘要：A novel method is proposed to automatically extract foreground objects from Martian surface images. The characteristics of Mars images are distinct, e.g. uneven illumination, low contrast between foreground and background, much noise in the background, and foreground objects with irregular shapes. In the context of these characteristics, an image is divided into foreground objects and background information. Homomorphism filtering is first applied to rectify brightness. Then, wavelet transformation enhances contrast and denoises the image. Third, edge detection and active contour are combined to extract contours regardless of the shape of the image. Experimental results show that the method can extract foreground objects from Mars images automatically and accurately, and has many potential applications.
关键词：automatic object extraction; Mars images; homomorphic filtering; wavelet transformation; active contour; edge detection