Method and apparatus for extracting image data

Details Method and apparatus for extracting image data Method and apparatus for extracting image data

1992-04-22

1994-02-01

Couso, Yon J.

Image analysis

Histogram processing

For setting a threshold

382 56, 382 41, 358453, G06K 946

Patent

active

052838404

ABSTRACT:
A method for extracting partial run-length data comprises the steps of: reading out total run-length data from a first memory in order of scanning; generating index data which indicates the relationship between the address of the first memory assigned to run-length data representing a first run of each scanning line and the subscanning coordinate of each scanning line; extracting partial run-length data representing the specified partial image out of the total run-length data from the first memory while referring to the index data corresponding to a range of the subscanning coordinate of the partial image; and executing image processing on the partial run-length data extracted.

REFERENCES:
patent: 4805135 (1989-02-01), Ochi et al.
patent: 4837635 (1989-06-01), Santos
patent: 5093873 (1992-03-01), Takahashi

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