Question

Where do the artifacts in noise come from? How do they affect the data?

Answer 1

Signal processing and artifact is any error in the representation of any information, introduced by the involved technique.in a computer field digital artifacts are anomalies introduced into digital signals as a result of digital processing.

In microscopy artifact is sometimes introduced during the processing of samples into sliding form.as example we can see in medical science or hospital These artifacts may be caused by a variety of phenomena such as the underlying physics of the energy-tissue interaction (i.e. Ultrasound-air), data acquisition errors (such as patient motion), or a reconstruction or other example in space science we can see in such type of happening in like as Radar some echoes can be related to fix targets multi path return and atmospheric changing.A digital video file is also compressed and, depending on the amount of compression, may present artifacts.

Adigital video file has the same fuzzy edges and distortion of images as a still image (JPEG) file may have. The break up of the video into large digital pixels and jerkiness in the video stream are examples of artifacts