Comparison of techniques for intra-frame coding of arbitrarily shaped video object boundary blocks
Wilfried R. Philips · IEEE Transactions on Circuits and Systems for Video Technology · 1999
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 /spl Delta/DC correction at the expense of a nonprohibitive increase in the number of computations. Some other improvements to SADCT-like schemes are also suggested.