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JPEG Compression History Estimation for Color Images
We routinely encounter digital color images that were previously compressed using the Joint Photographic Experts Group (JPEG) standard. En route to the image's current representation, the previous JPEG compression's various ...
Nonlinear Wavelet Transforms for Image Coding via Lifting
We investigate central issues such as invertibility, stability, synchronization, and frequency characteristics for nonlinear wavelet transforms built using the lifting framework. The nonlinearity comes from adaptively ...
Lattice Algorithms for Compression Color Space Estimation in JPEG Images
JPEG (Joint Photographic Experts Group) is an international standard to compress and store digital color images . Given a color image that was previously JPEG-compressed in some hidden color space, we aim to estimate ...