In general, test targets represent known values from an object or in a digital file, e.g., color patches, digital dots, lines with known dimensions, etc. The Macbeth ColorChecker is an analog target with 24 physical color patches. When captured by an input device and reproduced by an imaging system, we can compare tone and color relationships between the source target and its reproduction. On the other hand, the IT8.7/3 target is a digital file consisting of hundreds of patches with known CMYK digital values. When printed along side a signature, we can assess print quality quantitatively with the use of optical instruments and associated analysis techniques. - p. ii.
Chung, Robert, Edline Chun, Fred Hsu, Hemachand Kolli, Jon Lesser, Lingjun Kong, Ryan Testa, Seunga Kang Ha, Somika Shetty, and Vikaas Gupta. Test Targets 3.1, A collection of digital test forms showcasing features, capabilities, and applications in printing and publishing. Rochester, New York: RIT School of Media Sciences, 2003. https://scholarworks.rit.edu/books/69.
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