Comparison of techniques for intra-frame coding of arbitrarily shaped video object boundary blocks

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.