Patent ID: 7277584

Claim:
A form recognition system comprising: input means for inputting form image data; judging means for judging whether the form image data inputted by said input means is binary image data or multi-valued image data; converting means for converting the form image data inputted by said input means into multi-valued form image data, if the inputted form image data is judged as binary image data by said judging means; binary image obtaining means for binarizing the multi-valued form image data converted by said converting means or the inputted form image data judged as multi-valued image data by said judging means in order to obtain a plurality of binary images of a register form by using a plurality of binarizing threshold values, wherein the register form serves as a reference of a form identification code: extracting means for extracting feature data from each binary image obtained by said binary image obtaining means; form data generating means for generating plural form data based on the feature data extracted from the plurality of binary images of the register form, each form data including the feature data extracted from each binary image; storage means for storing the plural form data generated by said form data generating means, the stored plural form data being mapped to the same identification code of the register form; second binary image obtaining means for obtaining a binary image of a search form by binarizing form image data of the search form, the search form serving as a target of the form identification code; second form data generating means for generating form data of the search form based on the binary image of the search form obtained by said second binary image obtaining means; and form identifying means for identifying the identification code of the register form similar to the search form by comparing the form data of the search form with each of the stored plural form data of the register form.