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Image fidelity refers to the ability of a process to render a given copy in a perceptually similar way to the original (without distortion or information loss), i.e., through a digitization or conversion process from analog media to digital image. The process of determining the level of accuracy is called Image Quality Assessment (IQA).
This variation is called vignetting, and can be corrected by selectively brightening the perimeter of the image. Flat-field correction (FFC) is a digital imaging technique to mitigate the image detector pixel-to-pixel sensitivity and distortions in the optical path. It is a standard calibration procedure in everything from personal digital ...
Lenna. Image of Lena Forsén used in many image processing experiments. (Click on the image to access the actual 512×512px standard test version.) Lenna (or Lena) is a standard test image used in the field of digital image processing, starting in 1973. [1] It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker ...
Signal-to-noise ratio (SNR) is used in imaging to characterize image quality. The sensitivity of a (digital or film) imaging system is typically described in the terms of the signal level that yields a threshold level of SNR. Industry standards define sensitivity in terms of the ISO film speed equivalent, using SNR thresholds (at average scene ...
For the digital audio quality term, see High-resolution audio. Image resolution is the level of detail of an image. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other ...
DxO Analyzer was a suite of software tools [33] and equipment to test sensors, lenses, and standalone cameras, as well as mobile devices with cameras. [34] [35] Originally introduced by DxO Labs, DxO Analyzer is now a product of DxOMark Image Labs.
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