| US 7,529,417 B2 | ||
| Apparatus, method and storage medium for image encoding/decoding using shape-based coefficient interpolation | ||
| Mitsuru Maeda, Tokyo (Japan); and Hiroshi Kajiwara, Inagi (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jul. 08, 2005, as Appl. No. 11/176,665. | ||
| Claims priority of application No. 2005-166170 (JP), filed on Jun. 06, 2000; application No. 2004-203703 (JP), filed on Jul. 09, 2004; application No. 2004-203704 (JP), filed on Jul. 09, 2004; and application No. 2005-166169 (JP), filed on Jun. 06, 2005. | ||
| Prior Publication US 2006/0013304 A1, Jan. 19, 2006 | ||
| Int. Cl. G06K 9/36 (2006.01); G06K 9/46 (2006.01); H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/04 (2006.01) | ||
| U.S. Cl. 382—233 [382/248; 348/395.1; 348/398.1; 375/240.19] | 10 Claims |
| 1. An image encoding apparatus comprising:
a frequency band division unit for dividing image data into a plurality of frequency bands to generate sub-band coefficients;
a sub-band coefficient interpolation unit for interpolating sub-band coefficients outside a region of a shape by using shape
information representing a shape of the image data and the sub-band coefficients in the region of the shape;
an encoding unit for encoding the interpolated sub-band coefficients to generate encoded data; and
a shape information encoding unit for encoding the shape information to generate shape information encoded data.
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