The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Jun. 07, 1995
Seong-Jun Oh, Seoul, KR;
Sung-Moon Chun, Seoul, KR;
Joo-Hee Moon, Seoul, KR;
Jae-Kyoon Kim, Seoul, KR;
Hyundai Electronics Industries Co. Ltd., Kyonggi-Do, KR;
Abstract
An object based video information coding apparatus and method for an MPEG-4 system compresses image data without reducing image quality by converting motion-incompensable objects using image data blocks. The method includes the steps of i) separating moving and non-moving background imagery from an input image; ii) selecting motion-compensable objects and motion-incompensable objects from the moving imagery; iii) separating motion information and shape information from motion-compensable objects; iv) separating shape information and image information for motion-incompensable objects; v) dividing motion-incompensable object into N.times.N blocks; vi) discrete cosine transforming pixels in the N.times.N blocks using an N.times.N discrete cosine transform. In one embodiment, the pixels of the motion-incompensable object not in the N.times.N blocks are differential pulse code modulated. In another embodiment, the motion-incompensable object is first divided into 8.times.8 blocks. The remaining pixels are then divided into 4.times.4 blocks.