Image processing apparatus

Details Image processing apparatus Image processing apparatus

1987-01-21

1989-03-28

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358283, 382 27, G06K 936

Patent

active

048171743

ABSTRACT:
An image processing apparatus includes a density detector for detecting the density of an image by a CCD. The CCD has a plurality of sets of pixels, each set of pixels is defined by the neighboring pixels. The apparatus also includes a calculator for calculating the sum of the image densities detected by the pixels of each set and for further calculating a difference between the sums. If the difference is greater than a predetermined level, it means that the contour is present between the sets of pixels. An image processing unit is provided for increasing or decreasing the density of the image for the contour enhancement when the contour is detected.

REFERENCES:
patent: 4414581 (1983-11-01), Kato
patent: 4498104 (1985-02-01), Schulz
patent: 4501016 (1985-02-01), Persoon
patent: 4570180 (1986-02-01), Baier

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