H. Lin, A. N. Venetsanopoulos. Removing blocking effects of fractal compressed images using multichannel filtering. In Proceedings of 2nd International Workshop on Image and Signal Processing: Theory, Method, Systems and Applications, Budapest, 1995.
At very low bit rate, fractal coded images often have severe blocking artifacts. This paper presents a multichannel filtering method to remove the blocking effects. Based on the human visual model and quadtree block structure, four node blocks are first decomposed into a set of band-pass channels, i.e., Laplacian pyramids. Each channel is then filtered at the block boundary. Finally, the image is reconstructed from these channel components. Experimental results show the algorithm yield superior images to those obtained by simple low-pass filtering.
@InProceedings{LiVe95c,
Author = {Lin, H. and Venetsanopoulos, A. N.},
Title = {Removing blocking effects of fractal compressed images using multichannel filtering},
BookTitle = {Proceedings of 2nd International Workshop on Image and Signal Processing: Theory, Method, Systems and Applications},
Address = {Budapest},
Month = {},
Year = {1995}
}