Abstract: A new image coding method was proposed. In order to suffciently take advantage of local directionality of natural images, we adopted directional wavelet transform and greedy algorithm for suboptimal multitree tiling. Meanwhile we utilized empirical RD formula as the greedy criterion. The results indicate that our method performs better in coding gain and visual quality.

Key words: multitree, greedy algorithm, skewedwavelet transform, layer zero coding