Report on DMA'S Prototype Graphics from Enhanced Landsat Imagery for Applications to Hydrographic Charting.
Abstract
The Defense Mapping Agency (DMA) is currently developing prototype graphics from remotely sensed imagery for support to hydrographic survey planning and DMA's nautical chart maintenance program. The imagery for these prototypes is Landsat scenes that are enhanced by digital image processing techniques, or processed totally in an analog mode for quick response requirements. This paper discusses these processing approaches within the framework of the prototype efforts. Landsat's multispectral scanner imagery in the Makassar Strait of Indonesia is computer enhanced to highlight hydrographic information such as shoals, uncover areas, land-water boundaries, and shallow water depth intervals. These enhancements are graphically presented in a variety of scales, formats, and color assignments representing three approaches to computer enhancements. To produce quick response graphics, the analog approach to enhancement involves the use of a color additive viewer and multiscale projector/viewer for analysis of multispectral/multitemporal Landsat film. The prototype graphics using this approach were developed to support DMA's chart maintenance program, but could be use as a tool for survey planning in shallow waters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 08, 1983
- Accession Number
- ADA124123
Entities
People
- Alonzo D. Naylor
- William H. Lafollette