PURPOSE: To improve reproducibility of halftone photograph part in a recorded picture by performing necessary line width correction of characters and density adjustment of halftone part independently.
CONSTITUTION: A picture element correcting circuit 13 for characters and a picture element correcting circuit 14 for halftone part are provided in parallel in a picture signal correcting circuit, and halftone part is discriminated by a halftone detecting circuit, and otput of the picture element correcting circuit 13 for characters and output of the picture element corecting circuit 14 for halftone part are selectively outputted in a selecting circuit 15 by output (l) of the halftone detecting circuit. Accordingly, picture element correction for characters and picture element correction for halftone part can be performed is separate correcting circuit in a recorded picture.
JPH08163358 | IMAGE INPUT DEVICE |
JP2002010039 | APPARATUS AND METHOD FOR FORMING IMAGE AND RECORDING MEDIUM |
JPH0334771 | PICTURE PROCESSING UNIT |
JPS50140209A | 1975-11-10 | |||
JPS5349935A | 1978-05-06 |