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  • SineImage Resource Test Suite,More than you probably wanted
    SineImage Resource Test Suite,More than you probably wanted
    The main purpose of the SineImage Resource web site is to provide people with resources for making intelligent purchase decisions about digital imaging devices (digital cameras and scanners). Since The Image is The Object (tm) (that's such a...
  • Image Quality Metrics
    Image Quality Metrics
    While the final arbiter of image quality is the human viewer, efforts have been made to create objective measures of quality. This can be useful for many applications. Many objective measures of quality require the existence of a distortion...
  • What is an ISO 12233 Test Chart?
    What is an ISO 12233 Test Chart?
    The ISO 12233 Test Chart is the I3A/ISO standard for measuring the resolution of electronic still imaging cameras. The chart I am using is a very expensive, finely printed variation of the ISO 12233 standard that extends resolution to 4,000 ...
  • Difference in test of visual noise
    Difference in test of visual noise
    Several studies show that the SNR does not describe the perception of the human observer. So two cameras can have the same SNR value, but the noise is totally different in its perception. The Visual Noise metric is a solution for this proble...
  • Spatial frequency conversion
    Spatial frequency conversion
    The spatial frequency conversion table LW/PH LP/mm L/mm Cycles/mm Cycles/pixel LP/PH LW/PH * 1 * picture / [2 Height] / picture Height * picture / [2 Height] Vert. pixels / [2 * #] /2,0 LP/mm * [2 * picture Height] * 1 * 2,0 * 1 * pixel pit...
    SineImage Chart is precise aid, designed for image quality determining and for judgment of resolution limits of digital cameras. The chart is designed for photographic cameras up to 2000 addressable pixels in picture high (cca 6Mpix camera)....
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