Innovations in Digital Image Processing

摘要

This paper discusses a technique for producing suspended material distribution maps by spectrum matching and two different techniques for detecting time-dependent changes recorded by the Landsat MSS-computer-generated false color composites for visual interpretation and detection by pixel-for-pixel comparison. Included in the paper are some of the results of a course of study and development at the U. S. Army Engineer Waterways Experiment Station (WES) that have produced a family of computer programs and algorithms designed to extract meaningful geometric and radiometric information from digitized image data, interpret the data, and depict the results as tabular lists printed with conventional line printers or as images on photographic film that can be used to make photographic images, maps, or charts. Specifically described are the equipment used for image data processing and applications of image data processing techniques for (a) suspened material distribution mapping, (b) production of color composites from Landsat computer-compatible tapes, (c) change detection, and (d) generation of color separations for offset printing.