Image forming apparatus

Details Image forming apparatus Image forming apparatus

1990-04-30

1993-03-16

Ng, Jin F.

Image analysis

Histogram processing

For setting a threshold

382 9, G06K 948

Patent

active

051951479

ABSTRACT:
An image forming apparatus capable of reproducing a hand-written document by automatically correcting it. The apparatus discriminates figure images including hand-written rules and character images which are carried on a document. Thereafter, the apparatus corrects, among the figure images, straight lines images in a designated direction while preserving their relationship to the other figure images as to connection. Further, the apparatus changes the distance between nearby straight line image such that all the straight line images are spaces apart by the same distance.

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patent: 4672677 (1987-06-01), Yamakawa
patent: 4757551 (1988-07-01), Kobayashi et al.
patent: 4881130 (1989-11-01), Hayashi
patent: 4903312 (1990-02-01), Sato
patent: 4933865 (1990-06-01), Yamamoto et al.
patent: 4956869 (1990-09-01), Miyatake et al.
Yutaka Ohsawa et al, "Picture Processing Using Multi-Dimensional Data Management Structure-Vectorization of Drawings," Institute of Electronics and Communication Engineers of Japan, vol. J68-D, No. 4, pp. 845-852.

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