Character recognition system utilizing feature extraction

摘要: A character recognition system comprising means for scanning a on document field, the field being composed of plural features each which lies in respectively defined area character. pair video shift registers, one positive and negative video, are provided to signals therethrough. Each register includes plurality stages serially storing shifting binary quantization pattern sample within said field. Feature extraction logic circuitry is feature detecting provide indicative predetermined as shifted through selected register. The include mask matrices coupled registers. output encoding from into plural, multi-bit codes, such codes geographic areas. code serves indicate detected area. Plural registers store codes. Decoding decode therefrom indicating having detected. Further encode signal use by central processor. In order minimize number components create masks some high usage gated together inputs other first means. addition, delay associated with duplicate sub-features without necessitating separate sub-feature.