High-Fidelity Integrated Lossless Lossy Compression And Reconstruction Of Images
Abbreviated Journal Title
Lossless Lossy Compression Techniques; Reconstructed Images; Optics
We describe a compression scheme that aims at improving the fidelity of reconstructed images through the parallel application of both lossless and lossy compression techniques. The purpose of the scheme is to obtain compression ratios higher than those obtained by lossless compression schemes and at the same time produce reconstructed images with better fidelity than those normally obtained with lossy techniques. The straightforward (nonoptimized) application of this scheme consistently improves the fidelity of reconstructed images compared to a raw discrete cosine transform (DCT) algorithm. Using standard lossless compression utilities, the integrated scheme gives better fidelity (up to 62% improvement in mean square error) than the raw DCT algorithm under equal compression ratios. Further research is needed to optimize the integrated method, adapt it to the Joint Photographic Experts Group and other equivalent schemes, and evaluate the resulting performance. A discussion of ways that can further improve the efficiency of the integrated approach is given.
"High-Fidelity Integrated Lossless Lossy Compression And Reconstruction Of Images" (1993). Faculty Bibliography 1990s. 641.