Document image scanner with variable resolution windows

Document input method and apparatus

Document processing device for improving image quality

Document processing system

Document processing system and method

Document processing system and method

Document processor

Document reader

Document reader and reading processing method therefor

Document reader module

Document recognition and automatic indexing for optical characte

Document recognition device

Document reproduction security system

Document retrieval apparatus retrieving document data using calc

Document revising system for use with document reading and trans

Document segmentation system

Dot matrix print detector

Dot placement technique for speed optimization of raster printin

Dot region discriminating method

Dot-matrix video enhancement for optical character recognition