Radiographic Seminar Exam 2 Practice

Excessive noise suppression of a digital image can result in which of the following problems?

Loss of spatial resolution Increased contrast Higher dynamic range Improved sharpness

Correct Answer:

Loss of spatial resolution

Explanation:

Excessive noise suppression reduces spatial resolution because fine details and edges live in the high-frequency content of an image. When you denoise aggressively, you attenuate or remove a lot of those high-frequency components, not just the random noise. The true signal—the small features and sharp transitions between areas—gets blurred along with the noise, so nearby structures can no longer be distinguished clearly. This is why overwhelming noise suppression degrades sharpness and detail. Increased contrast or dynamic range aren’t achieved by denoising and, in fact, over-smoothing tends to soften edges rather than improve these attributes.

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