| US 7,450,757 B2 | ||
| Image processing device and image processing method | ||
| Yumi Kato, Tokyo (Japan); and Hideo Sato, Tokyo (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Appl. No. 10/518,607 PCT Filed Apr. 30, 2004, PCT No. PCT/JP2004/006328 § 371(c)(1), (2), (4) Date Dec. 23, 2004, PCT Pub. No. WO2004/100069, PCT Pub. Date Nov. 18, 2004. |
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| Claims priority of application No. 2003-164372 (JP), filed on May 06, 2003. | ||
| Prior Publication US 2005/0232483 A1, Oct. 20, 2005 | ||
| Int. Cl. G06K 9/00 (2006.01); G06K 9/38 (2006.01) | ||
| U.S. Cl. 382—172 [382/164; 382/171; 382/260] | 16 Claims |
| 1. An image processing apparatus, comprising:
a distribution data generation means for generating distribution data indicating a distribution of pixel data for a plurality
of pixel data indicating pre-regulated pixel values in a first range and composing first image data obtained by taking a picture
of a subject;
a specifying means for specifying a second range to be binarized in the first range based on the distribution data generated
by the distribution data generation means;
a mapping means for mapping pixel data in the second range specified by the specifying means among a plurality of pixel data
to the first range, and generates second image data composed of the mapped pixel data; and
a binarization means for binarizing the second image data generated by the mapping means based on a threshold value regulated
in the first range to generate a third image data.
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