Admesy MSE Series, Руководство по эксплуатации

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8 MSE formulas
8.1 Formulas
The MSE colorimeter uses an XYZ sensor, meaning that other colour
spaces are being converted from XYZ. The following sections show the
mathematical conversions that are used by the MSE colorimeter to
perform conversion from XYZ to other colour spaces.
Since the MSE internal processor is usually slower than the host system it
is recommended to do colour space conversion on the host system for the
fastest possible measurement.
8.2 XYZ to Yxy conversion
𝑥 =
𝑋
𝑋 + 𝑌 + 𝑍
𝑦 =
𝑌
𝑋 + 𝑌 + 𝑍
8.3 XYZ to
CIE 1976 UCS Yu’v’
u'v' is noted without the hyphen in the MSE commands. All Yuv commands
perform CIE Yu'v' calculations.
𝑢′ =
4𝑋
𝑋 + 15𝑌 + 3𝑍
𝑣′ =
9𝑌
𝑋 + 15𝑌 + 3𝑍