US 7,321,452 B2 | ||
Image processing apparatus | ||
Hideaki Yamada, Higashihiroshima (Japan) | ||
Assigned to Sharp Kabushiki Kaisha, Osaka (Japan) | ||
Filed on Mar. 26, 2003, as Appl. No. 10/396,324. | ||
Claims priority of application No. P2002-085629 (JP), filed on Mar. 26, 2002. | ||
Prior Publication US 2003/0215158 A1, Nov. 20, 2003 | ||
Int. Cl. H04N 1/04 (2006.01) |
U.S. Cl. 358—474 [358/473; 358/501; 358/1.15; 358/1.12; 358/451; 382/298; 382/112; 382/299] | 5 Claims |
1. An image processing apparatus which carries out the processing of generating, from analog image signals inputted for individual
lines in a main scanning direction, binary image data in which the lines are sequentially arranged in a sub-scanning direction,
comprising:
analog/digital conversion means for converting analog image signals of each individual line to a plurality of predetermined
bits of multivalued digital signals;
multivalued image storing means for storing one line of image data at a time, the multivalued image storing means being configured
to store the multivalued digital signals of each individual line of image data obtained by conversion of the analog image
signals of said each individual line by the analog/digital conversion means; and
binarization processing means which is capable of binarization processing of image data of one line, said one line being obtained
from one of the analog/digital conversion means and the multivalued image storing means, the multivalued digital signals of
the one line of image data stored in the multivalued image storing means being used when interpolation processing between
lines is performed.
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