Apparatus and method for processing image which adds identificat

Details Apparatus and method for processing image which adds identificat Apparatus and method for processing image which adds identificat

1997-06-19

1999-12-14

Rogers, Scott

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358501, 399366, 382251, 382276, G06K 936, G06K 1502, H04N 1387, H04N 150

Patent

active

060028416

ABSTRACT:
An image processing method and an apparatus using the method enable information to be added particularly to a two-valued image having a high resolution so that the information can be read reliably. In a counter section of the apparatus, clock pulses with respect to the main scanning direction and clock pulses with respect to the sub scanning direction are counted as an 8-bit yellow component density image signal is input, and a determination is made as to whether the position at which mark M is to be added has been reached and as to whether, if the addition position is reached, the present position is a position at which a modulation amount .alpha.(=255) is to be added to the image signal or a position at which a modulation amount .beta. is to be subtracted from the image signal. The result of this determination is output to a selecting device. The selecting device is supplied with the input Y component density image signal and two signals obtained by modulating this signal with the modulation amounts .alpha. and .beta. and outputs one of the three input signals according to the determination result.

REFERENCES:
patent: 5257119 (1993-10-01), Funada et al.
patent: 5444518 (1995-08-01), Hashiguchi et al.

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