This chapter deals with digital restoration, preservation, and data base storage of historical manuscripts images. It focuses on restoration techniques and binarization methods combined with image processing applied on document images for text background enhancement and discrimination. Sequential image processing procedures are applied for image refinement and enhancement on quality class categ...

Image processing is a valuable tool in many areas, including medical image analysis, document processing and bioinformatics. However, designing good image operators requires deep knowledge in both image processing and the area of application, and the designed operator might not be the best possible. Automatic training of image operators allows people with little knowledge in Image Processing to...

Two themes have evolved in speech and text image processing work at Xerox PARC that expand and redefine the role of recognition technology in d~ument-oriented appficafions. One is the development of systems that provide functionality similar to that of text processors but operate directly on audio and scanned image data. A second, related theme is the use of speech and text-nnage recognition to...

In Chinese document image processing, text and/or graphical block detection serves as an essential step in document layout analysis that in turn permits the eeective reasoning about the logical relationships among various text paragraphs and graphical entities for the purpose of document understanding. This paper presents a novel computational paradigm for extracting text/graphic blocks from Ch...

This paper presents a document image processing system implemented on a set of parallel processors. A preprocessing stage is first used to correct skew from scanned document images. The corrected image is segmented and labelled in a two-step Minimum Containing Rectangle (MCR) detection stage. Text Block Filtering (TBF) is then done heuristically and the filtered blocks are submitted to a Multi-...