Image Compression: A Survey <s> EDGE-BASED INPAINTING COMPRESSION <s> An edge-preserving image compression model is presented, based on subband coding and iterative constrained least square regularisation. The idea is to incorporate the technique of image restoration into the current lossy image compression schemes. The model utilises the edge information extracted from the source image as a priori knowledge for the subsequent reconstruction. Generally, the extracted edge information has a limited range of magnitudes and it can be lossily conveyed. Subband coding, one of the outstanding lossy image compression schemes, is incorporated to compress the source image. Vector quantisation, a block-based lossy compression technique, is employed to compromise the bit rate incurred by the additional edge information and the target bit rate. Experiments show that the approach could significantly improve both the objective and subjective quality of the reconstructed image by preserving more edge details. Specifically, the model incorporated with SPIHT (set partitioning in hierarchical trees) outperformed the original SPIHT with the "Baboon" continuous-tone test image. In general, the model may be applied to any lossy image compression systems. <s> BIB001 </s> Image Compression: A Survey <s> EDGE-BASED INPAINTING COMPRESSION <s> This paper presents a pre/postfiltering framework to reduce the reconstruction errors near block boundaries in wavelet-based image and video compression. Two algorithms are developed to obtain the optimal filter, based on boundary filter bank and polyphase structure, respectively. A low-complexity structure is employed to approximate the optimal solution. Performances of the proposed method in the removal of JPEG 2000 tiling artifact and the jittering artifact of three-dimensional wavelet video coding are reported. Comparisons with other methods demonstrate the advantages of our pre/postfiltering framework. <s> BIB002
Inpainting techniques finishes visual redundancy which is inherent in natural images. Some prominent characteristics in filtering are proposed in the removal of tilling of JPEG BIB002 at the encoder side extracted from images. Some area of image also skip in encoding process based on the features those are extracted and at the decoder side recover after using assisted inpainting method. Due to delivered assistant Information It has the capability to remove too much regions so compression ratio can be greatly increased and at a time for better quality of visual in saving regions already loosed and remove for good visual quality efficiently at the same time (Liu et al., 2007) . As in term of quality and edge preservation of image, it is indicated from result that proposed model is particularly suitable for images with high contrast image. It exhibits lossy compression BIB001 .