Matsushita Electric Industrial Co., Ltd.

Mariko Takenouchi

Ichiro Nakao

Satoshi Emura

Saki Takakura

Masahiro Shimizu

Tohru Yokoe

Akie Fujiwara

A character extraction apparatus is provided for extracting character data for each character from a text image which is represented by first pixels corresponding to character images and second pixels corresponding to background images. The character extraction apparatus comprises a character row detecting means for detecting character rows from the text image and obtaining position data of each character row; a pixel array extracting means for extracting arrays of continuous first pixels in an area specified by the character row position data and computing position data of each of the arrays of continuous first pixels; a character array linking means for linking the arrays of continuous first pixels in the area based on the position data of the arrays of continuous first pixels; and a character extracting means for recognizing each set of arrays of continuous first pixels linked by the character array linking means as a character and outputting character data.

Character extraction apparatus, dictionary production apparatus, and

Character extraction apparatus for extracting character data from a text

An apparatus and a method are provided for assigning categories to words in document images. The apparatus and method extract characters and words from document images and assign categories to the words by referring to dictionaries installed in the apparatus. Furthermore, the apparatus and method correct or assign categories by referring to category correction rule dictionary.

Apparatus for assigning categories to words in a documents for databases

A character recognition apparatus is arranged such that: a character pattern is extracted as a rectangle from the inputted picture image data; the number of picture element points corresponding to the direction code of the boundary point of the character portion is provided as the boundary direction density for each region of the recognition object character pattern for each sub-region provided by the division of character pattern; the scanning operation is performed with respect to the side opposite respectively from four sides of the extracted rectangle; the picture element point which changes from the background to the character portion is defined as a change point; the picture element string number is increased by one each time the change point is detected so as to add the picture string number to each picture element; the number of the picture element point corresponding to the picture element string number is provided as the background density for each region of the recognition object character pattern for each sub-region to be divided; the character recognition is performed using the boundary direction density for each region and the background density for each region.

Character recognition apparatus

An image data converter for editing or displaying image data without a large bit image memory for storing bit image data of an entire image. The editing or display is performed in such a way that an inputted image data is compression-encoded in its plurality of blocks in the sub-scanning direction, the counted compressed data length of each block is stored, and thereafter a necessary block is scaled only in its predetermined area at a high speed to a predetermined scale.

Growing community of inventors

Neyagawa, Japan

Mariko Takenouchi