Optical pattern recognition 22 Image processing 9 Congresses 7 Digital techniques 7 Computer vision 5 Data processing 3 Optical character recognition devices 2 Pattern recognition systems 2 Chemistry 1 Chemistry, Analytic 1 Computers 1 Congresses, 1 Discriminant analysis 1 Document imaging systems 1 Formal languages 1 Holography 1 Information display systems 1 Machine theory 1 Object-oriented methods (Computer science) 1 Optical data processing 1 Optical measurements 1 Parallel processing (Electronic computers) 1 Pattern perception 1 Pattern recognition 1 Robots, Industrial 1 Signatures (Writing) 1 Three-dimensional display systems 1 Writing 1