nonlinear transformation

A nonlinear transformation is a process that changes data or signals in a way that doesn't follow a straight line or simple pattern. Unlike linear transformations, which maintain proportional relationships and straight-line relationships, nonlinear ones can introduce curves, twists, or more complex changes. This helps in capturing more intricate patterns or features in data, making it useful in tasks like image processing, machine learning, and signal analysis. Essentially, nonlinear transformations modify the original information in a way that enhances or reveals new insights, often enabling algorithms to better understand complex data relationships.