Fuzzy Filters for Image Processing
Fuzzy Filters for Image Processing
Optimized fuzzy transformation for image deblocking
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Error resilient pre-/post-filtering for DCT-based block coding systems
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 3 (ICME '03) - Volume 03
A simple algorithm for the reduction of blocking artifacts in images and its implementation
IEEE Transactions on Consumer Electronics
Removal of compression artifacts using projections onto convex sets and line process modeling
IEEE Transactions on Image Processing
Combined edge crispiness and statistical differencing for deblocking JPEG compressed images
IEEE Transactions on Image Processing
Projection-based spatially adaptive reconstruction of block-transform compressed images
IEEE Transactions on Image Processing
A deblocking filter with two separate modes in block-based video coding
IEEE Transactions on Circuits and Systems for Video Technology
An efficient wavelet-based deblocking algorithm for highly compressed images
IEEE Transactions on Circuits and Systems for Video Technology
An optimization approach for removing blocking effects in transform coding
IEEE Transactions on Circuits and Systems for Video Technology
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In the paper is offered a new approach for blocking artifacts reduction in still images, processed with 2-level IDP Inverse Difference Pyramid (IDP) decomposition, based on DCT and Walsh-Hadamard orthogonal transforms. For this purpose was developed a two-dimensional fuzzy digital filter, whose performance changes in accordance with the image contents, framed by the filter window, and depending on the compression ratio and the maximum approximation error, obtained in result of the IDP decomposition. The experimental results show, that the block artifacts in the restored images are reduced without visual deterioration of the image sharpness. The main advantages of the new filter are its low computational complexity and the ability for adaptation in accordance with the image contents. In the paper are presented the results of the filter performance on JPEG-compressed images. The advantages of the new filter and its abilities for quality improvement of images with blocking artifacts are presented.