👉 Regrates, also known as regrate functions or regrating functions, are a class of mathematical functions that are used in signal processing and image analysis. They are defined by mapping a signal to another signal, where the new signal is obtained by applying a linear transformation to the original signal. In simple terms, a regrate function maps any input signal (such as a voltage or an image) to another signal (a transformed version of the original signal). This transformation is typically achieved