Sparse Representation

Sparse representation is a method used in signal processing and data analysis where a complex data object, like an image or sound, is expressed as a combination of only a few basic building blocks, called atoms. Think of it as describing a detailed picture using just a small number of simple shapes. This approach focuses on capturing the essential features efficiently, reducing complexity while preserving key information. It helps in tasks like compression, denoising, and pattern recognition by representing data in a compact, meaningful way with minimal components.