Howtosignalprocessing
What is signal denoising?
Denoising is any signal processing method which reconstruct a signal from a noisy one. Its goal is to remove noise and preserve useful information.
How does denoising algorithm work?
The simplest algorithm for denoising time-series data is taking a summary statistic using a rolling window. A rolling window collects observations into groups of n size. The groups are shifted one observation at a time, creating a "window" that passes over the dataset, hence the name.
What is image noise reduction?
Photo noise reduction is a way to reduce image noise in post-processing. Photo editing software smoothes the image by evaluating the differences between values of adjacent pixels. They may use the intensity or the color of the pixel as a reference.
