Tehnički glasnik, Vol. 6 No. 2, 2012.
Pregledni rad
Video cameras spectral responsivity functions and their matching with analysis functions of the display primaries
Dragan Matković
orcid.org/0000-0003-0261-8608
; Veleučilište u Varaždinu, Varaždin, Hrvatska
Sažetak
Colour image data captured and processed by digital video cameras are based upon trichromatic properties of human colour vision. Colorimetrically correct analysis to be presented makes the assumption that perfect or ideal analysis will result in a reproduction on a monitor (CRT-Cathode Ray Tube, LCD-Liquid Crystal Display, PDP-Plasma Display Panel) such that the chromaticity coordinates of the displayed colour and the original are the same. The science of colorimetry concerns the relationship between spectral power distribution and three components called tristimulus values that specify a colour. Accurate colour reproduction depends on knowing exactly how the physical spectra of the original scene are transformed into these components, and exactly how the components are transformed to physical spectra at the display.The colour fidelity of a digital video signal source was well known in the early days of colour television and was based on the trichromatic nature of human vision and very subtle and important point about colour capture and reproduction. One of the solutions with substantially improved colour fidelity achived by a linear matrix included in the signal chain is described in this paper.
Ključne riječi
fundamentals of vision; colour-matching functions; spectral power distributions (SPD) for display primaries; 3x3 linear matrix
Hrčak ID:
94792
URI
Datum izdavanja:
15.12.2012.
Posjeta: 1.935 *