| US 7,426,311 B1 | ||
| Object-based coding and decoding apparatuses and methods for image signals | ||
| Sung Moon Chun, Seoul (Korea, Republic of); Jin Hak Lee, Daejun-shi (Korea, Republic of); Joo Hee Moon, Seoul (Korea, Republic of); Gwang Hoon Park, Inchon-shi (Korea, Republic of); Jae Kyoon Kim, Seoul (Korea, Republic of); and Jae-won Chung, Seoul (Korea, Republic of) | ||
| Assigned to Hyundai Electronics Industries Co. Ltd., Kyoungki-Do (Korea, Republic of) | ||
| Filed on Nov. 19, 1998, as Appl. No. 9/195,897. | ||
| Application 09/195897 is a continuation in part of application No. 08/578142, filed on Dec. 26, 1995, abandoned. | ||
| Claims priority of application No. 95-37917 (KR), filed on Oct. 26, 1995; and application No. 95-48434 (KR), filed on Dec. 11, 1995. | ||
| Int. Cl. G06K 9/36 (2006.01) | ||
| U.S. Cl. 382—250 [375/240.2] | 16 Claims |
| 1. An object-based coding apparatus for image signals, comprising:
a shape information coding part for encoding shape information of an input image signal;
a shape-adaptive transform part for carrying out a shape-adaptive transform for texture information of said input image signal,
based on said shape information outputted from said shape information coding part having an output transform coefficient distribution
signal;
a shape-adaptive scan control part for forming a binary coefficient mask having said same transform coefficient distribution
as that of said output signal from said shape-adaptive transform part, and generating a scan control signal in accordance
with existence or nonexistence of a transform coefficient based on said binary coefficient mask; and
a shape-adaptive scanning part for carrying out a scanning operation for an output from said shape-adaptive transform part,
based on the associated control signal from said shape-adaptive scan control part.
|