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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | #!F-adobe-helvetica-medium-r-normal--18*
#!N
#!N #!Rtall713 DXGAMMA #!N sets the gamma correction for software-rendered images
displayed to the screen by a Display or Image tool. On
many display devices a given change in the digital brightness of
the image is not reflected in a corresponding change in screen
brightness. A gamma correction is a nonlinear adjustment of the pixel
values to compensate for this difference and produce a more accurate
representation on the screen. By default (except for 8-bit windows on
the sgi architecture), the correction factor (exponent) is 2 (two), on
the assumption that the display is not otherwise gamma corrected. The
DXGAMMA variable allows you to override this default. In particular, if
the display device is already gamma corrected, set the variable to
1 (one). (See Display in IBM Visualization Data Explorer User's Reference,
and README_sgi in /usr/lpp/dx.) #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF
#!N #!N #!Ltall715,dxall715 h DXGAMMA_8BIT, DXGAMMA_12BIT, and DXGAMMA_24BIT #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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