Lifting scheme

The lifting scheme is a method used in signal processing to efficiently analyze and compress data, such as images or audio. It works by breaking down a complex signal into simpler parts—typically a rough approximation and detailed differences—using a series of simple, reversible steps called "lifting steps." This process allows for easier data manipulation, compression, and reconstruction, often with less computation. It’s particularly valued in wavelet transforms for its efficiency and ability to handle data in a way that preserves important information while reducing size for storage or transmission.