Canon Kabushiki Kaisha

Shugoro Ueno

Tetsuomi Tanaka

Makoto Takaoka

Hiroaki Ikeda

Michihiro Izumi

Toshiaki Yagasaki

Shigeo Fukuoka

Shigeru Nishikawa

Masami Kugai

An image block is detected by raster scanning an input image and chasing surrounding black pixels around a detected black pixel as the start point in sequence. Further, by judging the feature of the detected image block, the attribute of the image block can be judged. Also, by comparing the detected image block with a predetermined window, it is possible to determine whether or not the image block is noise, whereby image processing of higher accuracy can be effected.

Image processing method and apparatus for discriminating an input image area or an attribute of image information in the discriminated area

A server is connected to an Ethernet port via a network and is further connected to a copier via video interface ports. The server is capable of subjecting image data read in by the copier or obtained from the network to processing for character recognition, coding and translation by a character recognition circuit, image coding/decoding circuit and translating circuit. Furthermore, image data is capable of being generated by a page-description-language interpreter based upon data, which is in the format of page description language, received from the network. Conversely, a character in the image data is capable of being recognized, coded and converted into page description language so that the amount of data sent to the network can be reduced.

Image processing apparatus method and system for converting character

This invention provides a character recognition apparatus comprising: dictionary storage means for storing a plurality of dictionaries; deriving means for deriving a candidate character and an operation result from a character image data by using a first dictionary stored in said storage means; judging means for judging whether or not if the operation result derived by said deriving means satisfies a predetermined reference value; and controlling means for controlling to recognize said character again by using a second dictionary different from said first dictionary used for deriving said operation result, if said judging means judges that said operation result does not satisfy said reference value.

Character recognition apparatus

This disclosure relates to a character recognition method and apparatus through which highly accurate character recognition is capable of being executed inexpensively and at high speed. Character recognition is raised in speed by executing segmentation of character images from an input image and character recognition from the segmented character images in parallel by separate processors without use being made of a special communication processor. After the character images have been segmented from the input image, the results of segmentation are evaluated and the character images are segmented further based upon the results of evaluation. Methods of evaluation include a method involving finding a standard character size from characters written in character images segmented initially, and adopting the difference between the standard size and the size of each segmented character image, and a method involving quantifying results of character recognition of character images segmented initially, and evaluating the results of quantification.

Method and apparatus for character recognition

An information recognition apparatus includes a first identification unit for performing first identification processing and a second identification unit for performing second identification processing, as units for identifying information. In this apparatus, the first identification unit and the second identification unit can perform identification processing in parallel. An information recognition method includes performing first identification processing and second identification processing as processing for identifying information. In this method, the first identification processing and the second identification processing can be performed in parallel.

Information recognition with transmission between character segmenting

A character recognition method and apparatus realizes high-speed character recognition by using small capacity memories. A character in an original image is read as an input character pattern in an image input process. An n-th calculator 109 in a similarity calculation unit 6 inputs the input character pattern into an input pattern memory 110 and compares the input character pattern with a standard character pattern (.phi..sub.m : m=0,M) stored in a dictionary memory 101 sequentially, thus calculating similarities between the input character pattern and the respective standard character patterns. If a CPU 1 issues a similarity calculation request instruction while an n-th calculator 109 is operating, another one of the calculators in a standby status is used so that another similarity calculation can be performed while simultaneously avoiding access conflict in the memory 101.

Character recognition method and apparatus for preparing a plurality of

This invention provides a sorting method and apparatus, in which identification codes and numeric information to be sorted assigned to these identification codes are entered. When there are a plurality of identification codes having equal numeric information, a first one of these identification codes is written in a first memory at an address corresponding to the numeric information. Next, if there is an identification code from a second identification code onward having numeric information equal to the abovementioned numeric information, this identification code is written in a second memory at an address corresponding to the previously entered identification code. The identification codes thus stored are read out in the order of the addresses of the first memory. When the first identification code has been stored at an address of the first memory, identification codes from the second onward having numeric information the same as that of this identification code are read out of the second memory, with the stored identification code serving as a read starting address of the second memory and the identification code read from the read starting address serving as the next read address.

Character recognition system for determining a class of similarity based

In a telephone system for performing channel control among telephones connected to a plurality of telephone lines, a call during a conversation between first and second telephones is placed on hold by a hold request from, say, the second telephone, and the call is capable of being transferred to a third telephone. It is also possible for the holding first telephone to instruct that the holding state be cancelled during the call transfer processing. When such a hold cancellation input from the first telephone is detected, the second telephone that requested the hold is so notified by an alarm. If the first telephone is subsequently hung up, the holding call is released and the connecting line of the first telephone is opened. When the second telephone cancels the holding state, the holding call is released and communication between the first and second telephones is restored. It is also arranged so that the holding first telephone can cause a message to be outputted from the second telephone that initiated the hold, thereby informing the second telephone of a desire to have the holding state cancelled. Thus, whereas a holding telephone is incapable of cancelling the holding state in the prior art, the foregoing arrangement makes it possible for the holding telephone to instruct cancellation of the holding state and to send a prescribed message to the telephone that initiated the hold.

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Tokyo, Japan

Shugoro Ueno