Image processing system

Details Image processing system Image processing system

1996-10-16

2000-08-22

Lee, Thomas D.

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

382272, 358464, 358466, G06K 938

Patent

active

061084565

ABSTRACT:
There is disclosed an image processing apparatus such that after completion of one scan of a scanner unit, a controller obtains a background value in a range to be read by one scan from an image processing IC and compares the background value with a binarization threshold value used in the present scan, and when it is equal to or less than a predetermined value, the background value is used in the next scan, and when it is equal to or larger than the predetermined value, by correcting the threshold value, an image can be read at a high quality.

REFERENCES:
patent: 4205345 (1980-05-01), van der Houwen et al.
patent: 4593325 (1986-06-01), Kannapell et al.
patent: 4941188 (1990-07-01), Yamada

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