Items tagged “artifact”

Salt and pepper noise, also known as impulse noise, has been used to describe the characteristic appearance of a certain artifact seen on MRI. The artifact looks like innumerable black and white pixels throughout the image. Smoothing filters are algorithms designed to diminish the noise whilst ...

Dead pixel artifact is an artifact seen in direct digital radiography systems where a detector element fails to receive a proper signal and therefore appears as a bright white dot in an x-ray image. A defective pixel on the display monitor can also lead to a white dot appearance but it will not...