A comparison of analog and digital techniques for pattern recognition
- 1 January 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 60 (10) , 1216-1231
- https://doi.org/10.1109/proc.1972.8881
Abstract
Since the computer technology utilized often places limitations on the performance of a particular pattern-recognition task, it is important to compare the state-of-the-art and future trends in both the digital and the analog-computer fields. Electronic, acoustical, and optical analog computers for use in pattern recognition are discussed and their performance compared with that of both general-purpose and special-purpose digital computers. It is shown that the analog computer offers workers using low-precision high-speed one-dimensional or two-dimensional linear discriminant analysis a significant advantage in hardware performance (equivalent bits per second per dollar) over the digital computer in certain limited but important areas. These areas include fingerprint identification, word recognition, chromosome spread detection, earth-resources and land-use analysis, and broad-band radar signal processing. A trend analysis is presented which indicates that the advantages of analog computation will probably be overcome in the next few decades by the rapid performance advances being made in digital-computer hardware.Keywords
This publication has 52 references indexed in Scilit:
- Matrix Multiplication by Optical Methods: Experimental VerificationApplied Optics, 1972
- Counting and Classifying Small Objects by Far-Field Light ScatteringApplied Optics, 1971
- CONVOLUTION AND TIME INVERSION USING PARAMETRIC INTERACTIONS OF ACOUSTIC SURFACE WAVESApplied Physics Letters, 1971
- A Coherent Optical Computer System Using the Membrane Light ModulatorIEEE Transactions on Aerospace and Electronic Systems, 1970
- Design of Surface Wave Delay Lines with Interdigital TransducersIEEE Transactions on Microwave Theory and Techniques, 1969
- Theory and performance of perpendicular diffraction delay linesProceedings of the IEEE, 1965
- Spatial Filtering for Detection of Signals Submerged in NoiseApplied Optics, 1965
- Signal detection by complex spatial filteringIEEE Transactions on Information Theory, 1964
- Reconstructed Wavefronts and Communication Theory*Journal of the Optical Society of America, 1962
- Optics and Communication TheoryJournal of the Optical Society of America, 1953