Periodic

Periodic noise attenuation

Periodic noise attenuation
  1. What is periodic noise?
  2. How do you get rid of periodic noise?
  3. Which filter removes periodic noise?
  4. What are the causes of periodic noise?

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.

How do you get rid of periodic noise?

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 removes periodic noise?

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

What are the causes of periodic noise?

In a video stream, periodic noise is typically caused by the presence of electrical or electromechanical interference during video acquisition or transmission.

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