How to filter almost periodic noise?

1. How do you filter periodic noises?
2. Which filter is used to remove periodic noise?
3. What is periodic noise?

How do you filter periodic noises?

Periodic noise can be reduced significantly via frequency domain filtering. On this page we use a notch reject filter with an appropriate radius to completely enclose the noise spikes in the Fourier domain. The notch filter rejects frequencies in predefined neighborhoods around a center frequency.

Which filter is used to remove periodic noise?

Adaptive Gaussian notch filter for removing periodic noise from digital images.

What is periodic noise?

In this context, periodic noise is an unwanted signal that interferes with the source image or signal at a random frequency, depending on its source. Generally, this interference can be added to the image from nature, the electricity network, or electronics devices.