Image processing apparatus and method capable of discriminating

Details Image processing apparatus and method capable of discriminating Image processing apparatus and method capable of discriminating

1992-08-19

1994-11-29

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

382 50, 358456, H04N 140

Patent

active

053695070

ABSTRACT:
An image processing apparatus and method selects a processing mode to be one of a character image processing mode and a picture image processing mode in accordance with an image texture in an original image. The apparatus and method uses a scanner which pre-scans an original image to obtain sampled image data, a judging means discriminates between a character image area and a picture image area in an area of the original image based on an analysis of the sampled image data. The apparatus and method the original image processing mode from a character image processing mode to a picture image processing mode and vice versa based on the discrimination by the judging means. During discrimination, the judging means finds blank-stripe zones in an area of the original image based on an analysis of the sampled image data, and divides the area into image blocks by splitting the area with the blank-stripe zones therein and ascertains whether the original image in each block is a character image or a picture image based on a ratio between the length and the width of each image block.

REFERENCES:
patent: 4503556 (1985-03-01), Scherl et al.
patent: 5119207 (1992-06-01), Nitsuma et al.

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