Title :
Comparison of techniques for intra-frame coding of arbitrarily shaped video object boundary blocks
Author :
Philips, Wilfried
Author_Institution :
Dept. of Telecommun. & Inf. Proc., Ghent Univ., Belgium
fDate :
10/1/1999 12:00:00 AM
Abstract :
This paper presents experimental results that demonstrate that the weakly separable polynomial orthonormal transform outperforms the shape adaptive discrete cosine transform (SADCT) and the previously introduced improved SADCT with ΔDC correction at the expense of a nonprohibitive increase in the number of computations. Some other improvements to SADCT-like schemes are also suggested
Keywords :
adaptive codes; data compression; discrete cosine transforms; polynomials; rate distortion theory; transform coding; video coding; ΔDC correction; SADCT; WSPOL technique; experimental results; intra-frame coding; rate-distortion characteristics; shape adaptive discrete cosine transform; video object boundary blocks; weakly separable polynomial orthonormal transform; Discrete cosine transforms; Discrete transforms; Image segmentation; MPEG 4 Standard; PSNR; Polynomials; Quantization; Rate-distortion; Shape; Video coding;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
