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see my post at: povray.pov4.discussion.general
subject: Gamma correction of input colours/image files
the images are 4x magnified by pixel replication.
the scene file:
//===============================================
global_settings {assumed_gamma 1.0}
//global_settings {assumed_gamma 2.2}
#default {finish {ambient 1 diffuse 0}}
camera {
orthographic
location <0,0,1>
look_at <0,0,0>
right 1*x
up 1*y
}
box {<-0.5,-0.5,-0.2>, <0.5, 0.5,-0.1>
pigment {rgb <1,0,1>}
}
box {<-0.3,-0.2,-0.1>, <0.3, 0.2, 0>
rotate z*17.5
pigment {rgb <0,1,0>}
}
//===============================================
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Attachments:
Download 'test_gamma10.png' (4 KB)
Download 'test_gamma22.png' (4 KB)
Preview of image 'test_gamma10.png'
![test_gamma10.png](/povray.binaries.images/attachment/%3C48ef7b13%40news.povray.org%3E/test_gamma10.png?ttop=443866&toff=3000&preview=1)
Preview of image 'test_gamma22.png'
![test_gamma22.png](/povray.binaries.images/attachment/%3C48ef7b13%40news.povray.org%3E/test_gamma22.png?ttop=443866&toff=3000&preview=1)
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