Biorthogonal nearly coiflet basis is a set of math equations that can be used to break down images or other data into simpler parts. Think of it like a jigsaw puzzle – you have a lot of small pieces (the equations) that can be put together to create the original image. The goal is to be able to create the original image with fewer pieces as possible. The biorthogonal nearly coiflet basis is like a bigger jigsaw piece that is easy to fit into the puzzle, so it helps make the puzzle easier to solve.