Algorithmic support of the device prototype for passports and visas reading

The given work is devoted to development of the prototype of algorithms and software for the device of reading of machine-readable documents. As an example the basic principles of construction of system of automatic reading of the passports and visas are considered. The original algorithms of detection of textual lines, definition of symbol places and adaptive binarization of the images are offered. Method of zones and method of crossings are implemented for recognition of OCR-B-code symbols.