THE PRENORMALIZATION OF RECONNAISSANCE DATA.
Abstract
Several techniques are described and evaluated for the prenormalization of gray-scale aerial photographs prior to their use as input to an adaptive memory recognition system. It summarizes the evidence for analagous preprocessing operations in the animal visual system. Discussed are the mplementation and testing of several pre-processing techniques which reduce the gray-scale input data to binary form. The utility of candidate techniques in connection with automatic detection of targets on aerial photographs is estimated by comparing recognition error rates on a computersimulated adaptive memory recognition system. Problems associated with high-speed prenormalizing techniques were investigated through the construction of a real time gradient mapping system which also permits evaluation of certain parameter variations on various types of target images. A preferred implementation is described for a versatile prenormalization device, suitable for use in various recognition tasks. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 25, 1963
- Accession Number
- AD0422946
Entities
People
- H. G. Kellett
- J. S. Bryan
- John F. Bogusz