Image data processing apparatus for locating pixel having maximu

Details Image data processing apparatus for locating pixel having maximu Image data processing apparatus for locating pixel having maximu

1993-03-10

1994-08-09

Heyman, John S.

Facsimile and static presentation processing

Natural color facsimile

Specific image-processing circuitry

358467, 3401462, 382 34, H04N 1419

Patent

active

053371682

ABSTRACT:
An image data processing apparatus includes a plurality of registers each of which outputs an output signal in accordance with a corresponding signal of a plurality of input coincidence signals derived from the input image data, the output signal indicating whether or not a corresponding register has a maximum count value, and each input coincidence signal indicating whether or not a corresponding pixel among neighborhood pixels of a target pixel of the input image data coincides with a corresponding dot among predetermined reference dots at given locations relative to the location of the target pixel in the input image data, and a state checking part for outputting a state signal indicating whether or not the output signal level of a first register having the maximum count value currently changes from the previous level by detecting the current output signal level of the first register in accordance with the input coincidence signals and in accordance with the output signals of the registers.

REFERENCES:
patent: 4470048 (1984-09-01), Short
patent: 4682215 (1987-07-01), Adachi
patent: 5121444 (1992-06-01), Takizawa et al.

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