Gamma function tests

by Billy Biggs <vektor@dumbterm.net>

The following images were generated to try and test how close my monitor is to various gamma standards. The left hand side of each image is a repeating pattern of pure white and black pixels:

    [ BLACK  WHITE ]
    [ WHITE  BLACK ]
    

The right hand side is half-intensity grey according to each standard. They should look close to identical in a properly configured viewing environment for that standard.

sRGB Gamma Curve

pow( value, 0.45 )

Rec.709 Gamma Curve

No gamma correction

The following tests to see if there is a surround effect when testing gamma plates.

sRGB Gamma Curve

Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory - [DIR] old/ 25-Aug-2003 11:33 - [IMG] medium-revhalfred-sr..> 25-Aug-2003 11:59 1.1K [IMG] medium-revhalfgreen-..> 25-Aug-2003 11:59 1.1K [IMG] medium-revhalfblue-s..> 25-Aug-2003 11:59 1.1K [IMG] medium-revhalf-srgb.png 25-Aug-2003 11:59 1.1K [IMG] medium-halfred-srgb.png 25-Aug-2003 11:54 1.1K [IMG] medium-halfgreen-srg..> 25-Aug-2003 11:54 1.1K [IMG] medium-halfblue-srgb..> 25-Aug-2003 11:54 1.1K [IMG] medium-half-srgb.png 25-Aug-2003 11:54 1.1K [IMG] large-halfred-srgb.png 25-Aug-2003 11:55 2.9K [IMG] large-halfgreen-srgb..> 25-Aug-2003 11:55 2.9K [IMG] large-halfblue-srgb.png 25-Aug-2003 11:55 2.9K [IMG] large-half-srgb.png 25-Aug-2003 11:55 3.0K [IMG] halfred-srgb.png 25-Aug-2003 11:33 271 [IMG] halfred-rec709.png 25-Aug-2003 11:33 271 [IMG] halfred-pow0.45.png 25-Aug-2003 11:33 271 [IMG] halfgreen-srgb.png 25-Aug-2003 11:33 271 [IMG] halfgreen-rec709.png 25-Aug-2003 11:33 271 [IMG] halfgreen-pow0.45.png 25-Aug-2003 11:33 271 [IMG] halfblue-srgb.png 25-Aug-2003 11:33 271 [IMG] halfblue-rec709.png 25-Aug-2003 11:33 271 [IMG] halfblue-pow0.45.png 25-Aug-2003 11:33 271 [IMG] half-srgb.png 25-Aug-2003 11:33 274 [IMG] half-rec709.png 25-Aug-2003 11:33 274 [IMG] half-pow0.45.png 25-Aug-2003 11:33 274 [IMG] half-none.png 25-Aug-2003 11:33 273 [IMG] gamma709.png 25-Aug-2003 11:00 2.3K