| US 7,515,298 B2 | ||
| Image processing apparatus and method determining noise in image data | ||
| Hiroyuki Suzuki, Toyokawa (Japan); Takayuki Nabeshima, Toyokawa (Japan); Hideyuki Toriyama, Toyokawa (Japan); Kazuhiro Ishiguro, Toyohashi (Japan); and Toru Maegawa, Hino (Japan) | ||
| Assigned to Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo (Japan) | ||
| Filed on Feb. 10, 2004, as Appl. No. 10/774,662. | ||
| Claims priority of application No. 2003-359612 (JP), filed on Oct. 20, 2003. | ||
| Prior Publication US 2005/0083543 A1, Apr. 21, 2005 | ||
| Int. Cl. G06F 15/00 (2006.01); G06K 1/00 (2006.01); H04N 1/60 (2006.01); H04N 1/46 (2006.01) | ||
| U.S. Cl. 358—1.9 [358/509] | 15 Claims |
| 1. An image processing apparatus, comprising:
an input portion inputting color image data read from a document by a reading portion;
a converter that converts a portion of the color image data into chromaticness data;
a detector detecting, based on lightness data and chromaticness data, whether said input color image data is out of a predetermined
color space; and
a determining portion determining that said color image data is image noise when said detector detects that said color image
data is out of said predetermined color space.
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