A NEW SHAPE-ADAPTIVE DCT FOR CODING OF ARBITRARILY SHAPED IMAGE SEGMENTS Wee Kok NG and Zhiping LIN School of Electrical and Electronic Engineering, Nanyang.

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Presentation transcript:

A NEW SHAPE-ADAPTIVE DCT FOR CODING OF ARBITRARILY SHAPED IMAGE SEGMENTS Wee Kok NG and Zhiping LIN School of Electrical and Electronic Engineering, Nanyang Avenue Nanyang Technological University, Singapore ICASSP ‘00

OUTLINE Shape-adaptive DCT for generic coding of videoShape-adaptive DCT for generic coding of video –Sikora, T.; Makai, B. Circuits and Systems for Video Technology, IEEE Transactions on Volume: 5 1, Feb. 1995, Page(s): Boundary block-merging (BBM) technique for efficient texture coding of arbitrarily shaped objectBoundary block-merging (BBM) technique for efficient texture coding of arbitrarily shaped object –Joo-Hee Moon; Ji-Heon Kweon; Hae-Kwang Kim Circuits and Systems for Video Technology, IEEE Transactions on Volume: 9 1, Feb. 1999, Page(s):

SA-DCT

Covariances between two columns

SA-DCT

Result

Boundary Block-Merging (BBM) LPE & Zero Padding Block Merging

Padding

How Block Merging ?

Working with MPEG-4 Encoder

The Proposed new method DC adjustments for SA-DCT

BBGM

The BBGM-SA-DCT Algorithm

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