Title :
New overlapped block reconstruction for tree-structured decomposition of images
Author :
Simon, B. ; Macq, B.
Author_Institution :
Lab. de Telecommun. et Teledetection, Univ. Catholique de Louvain, Belgium
Abstract :
The quadtree-structured decomposition of images is used in image compression in order to have a low cost region description associated with a particular transform. When this transform is reduced to the mean value on each block, high compression ratios can be obtained. However, in this case a blocking effect arises. In the paper, a reconstruction method using smooth non-symmetrical interpolation functions is introduced. This method represents the information of the tree in a far more satisfactory way for the visual system than non-overlapping blocks reconstruction
Keywords :
data compression; image coding; image reconstruction; image segmentation; interpolation; quadtrees; transforms; blocking effect; compression ratios; image compression; low cost region description; overlapped block reconstruction; quadtree-structured decomposition; reconstruction method; smooth non-symmetrical interpolation functions; transform; tree-structured decomposition; visual system; Costs; Discrete cosine transforms; Image coding; Image reconstruction; Interpolation; Quantization; Reconstruction algorithms; Shape; Signal to noise ratio; Visual system;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413738
