Color theory
2 views
Skip to first unread message
wad
Aug 5, 2014, 12:53:16 PM8/5/14
to test...@googlegroups.com
To undersTand color calibration, we need to take a
trip back to a time when, ironically, the world was in blackand-white—1931. This was when the first mathematical
chart defining the range of colors visible to the human eye
was created, dubbed the CIE 1931 Color Space. What’s nice
about a chart is that you can define coordinates for each
color, which is pretty handy for this calibration business.
Ideally, all monitors would be capable of displaying the
same color spectrum our eyes can detect, but the cost of
such a display would make a Titan SLI setup seem cheap.
To create a more realistic standard, less extensive color
spaces such as sRGB and Adobe RGB were devised. The
vast majority of current monitors should display the sRGB
color spectrum, with pro-spec IPS monitors covering the
extra colors incorporated by the Adobe RGB color space.
Calibration software displays a range of colors within
this spectrum. The colorimeter then detects each color
displayed by the monitor, references it with the color’s coordinates in the sRGB chart, and works out the correction
required to get the monitor’s interpretation to sync with
its location in the sRGB color space. The software then
creates a color profile incorporating all these correction
values into one table. This is loaded into the graphics driver so that your graphics card can modify its color output
by the amounts specified in the color calibration profile.
trip back to a time when, ironically, the world was in blackand-white—1931. This was when the first mathematical
chart defining the range of colors visible to the human eye
was created, dubbed the CIE 1931 Color Space. What’s nice
about a chart is that you can define coordinates for each
color, which is pretty handy for this calibration business.
Ideally, all monitors would be capable of displaying the
same color spectrum our eyes can detect, but the cost of
such a display would make a Titan SLI setup seem cheap.
To create a more realistic standard, less extensive color
spaces such as sRGB and Adobe RGB were devised. The
vast majority of current monitors should display the sRGB
color spectrum, with pro-spec IPS monitors covering the
extra colors incorporated by the Adobe RGB color space.
Calibration software displays a range of colors within
this spectrum. The colorimeter then detects each color
displayed by the monitor, references it with the color’s coordinates in the sRGB chart, and works out the correction
required to get the monitor’s interpretation to sync with
its location in the sRGB color space. The software then
creates a color profile incorporating all these correction
values into one table. This is loaded into the graphics driver so that your graphics card can modify its color output
by the amounts specified in the color calibration profile.
Reply all
Reply to author
Forward
0 new messages