Denoising of an image refers to the process of reconstruction of a signal from noisy images. Denoising is done to remove unwanted noise from image to analyze it in better form. It refers to one of the major pre-processing steps.
Link to notebook: https://colab.research.google.com/drive/1ABR0DBwyffmN6GC3_9yWTowtbLEwgdco?usp=sharing