While we all know that compression causes artifacts, just how much do you know about what causes them and how to reduce them? While the occurrence of artifacts would seem random, it is directly linked ...

Engineers are familiar with using the Fourier transform to convert between time-varying signals and their corresponding frequency spectrum. What is not as familiar is that spatially varying signals, ...

Linear transforms are widely used in signal compression. They have the primary objective of concentrating the signal energy on a few coefficients, thus preparing the data for the subsequent ...