RivWidth: A Software Tool for the Calculation of River Widths From Remotely Sensed Imagery
作者： Tamlin M. Pavelsky , Laurence C. Smith
关键词: Image resolution 、 Line segment 、 Fluvial 、 Convolution 、 Pixel 、 Boundary (topology) 、 Raster graphics 、 Computer science 、 Line (geometry) 、 Remote sensing
摘要: RivWidth is an implementation in ITT Visual Information Solutions IDL of a new algorithm that automates the calculation river widths using raster-based classifications inundation extent derived from remotely sensed imagery. The utilizes techniques boundary definition to extract centerline, derives line segment orthogonal this at each centerline pixel, and then computes total width along orthogonal. output comparable quality measurements manual techniques; yet, it continuously generates thousands values entire stream course, even multichannel systems. Uncertainty principally depends on water classification used as input, though pixel resolution input parameters play lesser roles. Source code for can be obtained by visiting http://pavelsky.googlepages.com/rivwidth.
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