Look-Up Tables (LUTs)

Look-Up Tables (LUTs) are data structures that store precomputed values for specific inputs, allowing quick retrieval instead of recalculating each time. In digital systems and graphics, LUTs speed up processes like color correction, image processing, or signal transformation by providing immediate answers for common operations. Think of them as a reference guide or a shortcut: instead of performing complex calculations repeatedly, a system looks up the answer in a pre-filled table, saving time and computational resources. This makes processing faster and more efficient while maintaining accuracy.