Desktop scanning to sRGB

Jon Yngve Hardeberg

doi:10.1117/12.373429

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21 December 1999 Desktop scanning to sRGB

Jon Yngve Hardeberg

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Proceedings Volume 3963, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V; (1999) https://doi.org/10.1117/12.373429
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

To achieve high image quality throughout a digital imaging system, the first requirement is to ensure the quality of the device that captures real-world physical images to digital images, for example a desktop scanner. Several factors have influence on this quality: optical resolution, bit depth, spectral sensitivities, and acquisition noise, to mention a few. In this study we focus on the colorimetric faculties of the scanner, that is, the scanner's ability to deliver quantitative device-independent digital information about the colors of the original document. We propose methods to convert from the scanner's device-dependent RGB color space to the standard device-independent color space sRGB. The methods have been evaluated using several different desktop scanners. Our results are very good: mean CIELAB (Delta) E^*_ab color errors as low as 1.4. We further discuss advantages and disadvantages of a digital color imaging system using the sRGB space for image exchange, compared to using other color architectures.

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Jon Yngve Hardeberg "Desktop scanning to sRGB", Proc. SPIE 3963, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V, (21 December 1999); https://doi.org/10.1117/12.373429

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