Call
Contrast resolution is the ability to distinguish between differences in intensity in an image. The measure is used in medical imaging to quantify the quality of acquired images. It is a difficult quantity to define because it depends on the human observer as much as the quality of the actual image. For example, the size of a feature affects how easily it is detected by the observer.
One definition of image contrast is:
where SA and SB are signal intensities for signal-producing structures A and B in the region of interest. A disadvantage of this definition is that the contrast C can be negative. An alternative definition is:
where Sref is a reference signal intensity, which is independent of the type of signal-producing structure under investigation.
Talk Doctor Online in Bissoy App