Image quality is a characteristic of an image that measures the perceived image degradation (typically, compared to an ideal or perfect image). Imaging systems may introduce some amounts of distortion or artifacts in the signal, so the quality assessment is an important problem.
Read more about Image Quality: In Photographic Imaging, Image Quality Assessment Categories, Image Quality Factors
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... Sharpness determines the amount of detail an image can convey ... sharpness is affected by the lens (design and manufacturing quality, focal length, aperture, and distance from the image center) and sensor (pixel count and anti-aliasing filter) ... Oversharpening, can degrade image quality by causing "halos" to appear near contrast boundaries ...
... light beams together thereby preventing an image being transmitted by a single fiber - (more accurately, the different path-lengths experienced by individual light-rays alter their relative phases so rendering ... at either end, then focusing an image on one end of the bundle would produce a 'pixel-ated' version at the further end which could be viewed via an eyepiece or ... also suffered from leakage where adjacent fibers touched which degraded the image still further ...
... Foveated imaging may be useful in providing a subjective image quality measure ... Traditional image quality measures, such as peak signal-to-noise ratio, are typically performed on fixed resolution images and do not take into account some aspects of the human visual ... A foveated quality index may therefore more accurately determine image quality as perceived by humans ...
... CT examinations without compromising the image quality ... doses result in higher-resolution images, while lower doses lead to increased image noise and unsharp images ...
... and/or ocular to reduce/eliminate image quality impairing stray light ... hoods that extend the full length of a gun barrel to improve image quality by blocking out shot strings induced mirage ("heat waves" or aberrations resulting from a hot gun barrel) ... filters like Grey, Yellow and Polarising filters to optimize image quality in various lighting conditions ...
Famous quotes containing the words quality and/or image:
“It is not stressful circumstances, as such, that do harm to children. Rather, it is the quality of their interpersonal relationships and their transactions with the wider social and material environment that lead to behavioral, emotional, and physical health problems. If stress matters, it is in terms of how it influences the relationships that are important to the child.”
—Felton Earls (20th century)
“The island dreams under the dawn
And great boughs drop tranquillity;
The peahens dance on a smooth lawn,
A parrot sways upon a tree,
Raging at his own image in the enamelled sea.”
—William Butler Yeats (1865–1939)