Image processing apparatus

Details Image processing apparatus Image processing apparatus

1992-03-18

1993-09-14

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358462, 358465, 358444, 382 54, 382 22, H04N 140

Patent

active

052454452

ABSTRACT:
An image processing apparatus includes an image processing part for carrying out an image processing for an input image having pixels with multilevel bits supplied by an input unit, the image processing being carried out at a processing level among a plurality of predetermined processing levels, a first detecting part for detecting an edge quantity of the input image, a second detecting part for detecting a screened dot quantity of the input image, and a control part for determining a control index proportional to the detected edge quantity and the detected screened dot quantity, and for supplying the determined control index to the image processing part, so that the image processing part selects a processing level appropriate for the input image from the processing levels in response to the control index, and carries out an image processing for the input image at the selected processing level.

REFERENCES:
patent: 5001576 (1991-03-01), Tanaka et al.
patent: 5166810 (1992-11-01), Sorimachi et al.

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