期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2004
卷号：XXXV Part B5
页码：178-182
出版社：Copernicus Publications
摘要：Foveation is a term used in computer vision to refer a technique of image compression. This type of compression takes the principals of human vision into account, trying to mimic the way the "fovea" works. "The human visual system implements an elegant comprise between the competing goals of maximizing field of view, maximizing spatial resolution, and minimizing neural resources: It encodes a large field of view using a retina with variable spatial resolution, and then when necessary, uses high-speed eye movements to direct the highest-resolution region of the retina (the fovea) at specific points in the visual scene." (Perry & Geisler, 2002) We can consider foveation as a method of level of detail (LOD) management, or under the bigger umbrella of area of interest management (AOIM). Foveation has been employed both when the compression was needed for the system itself and when the image was to be sent over a network where the bandwidth availability has always been a limiting factor. Consequently, foveation is an efficient technique of managing photogrammetric visualization, particularly on 1:1 projections or over the network. This paper presents an introduction of this important technique to the field of photogrammetry
