INSPECTING INSTRUMENT FOR PRINTED MATTER

Japanese Patent JP3237906

B2

PURPOSE: To provide the inspecting instrument for printer matter, which sets a binarized threshold for extracting a character-string to an optimal value, even in the case a density difference between a character part and a background part is small, extracts only the character-string with high precision, and can execute an inspection with high precision.
CONSTITUTION: Image data on printer matter is read by a scanner 12, and stored in an image memory 16. By gradation image data in the image memory 16, first of all, a reference character-string in the left upper part of the printed matter is extracted, its feature amount is calculated, and with regard to the extracted reference character-string, the character recognition is executed. Subsequently, with regard to the character-string in the right lower part in which it is difficult to extract a character, the extraction is executed by using a feature amount of the reference character-string stored in a memory 19, and the character recognition is executed. In such a way, the extraction and the recognition processing of the character-string in which reflection lightness of a character and a pattern are separated, and the character-string in which reflection lightness is near are executed, and thereafter, those results of recognition are collated with each other, and only when both the same character-strings coincide with each other, a decision of validity for making printed matter effective is executed.

Toshio Hirasawa

JP19720992A

December 10, 2001

July 23, 1992

Click for automatic bibliography generation  

Toshiba Corporation

G06K9/20; G06T1/00; G06T7/00; G06K9/03; (IPC1-7): G06K9/03; G06K9/20; G06T1/00

JP57111691A
JP62191987A
JP39484A
JP62280993A
JP535851A

Takehiko Suzue

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