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Subject: Re: Creating a Sepia Tone Filter



Vasudevank,

it's practically impossible to create sepia directly in an RGB
space.
1=2E Convert to Grayscale
2=2E Convert to RGB (still gray)
3=2E Edit in HLS or HSB=3DHSV (Photoshop)
4=2E Choose Hue=3D20=B0 / Saturation 20..30% and adjust
5=2E Save as RGB

H =3D Hue
L =3D Lightness
S =3D Saturation
B =3D Brightness (Lightness)
V =3D Value (Lightness)

Conversion code for standard HLS can found e.g. here:
http://www.fho-emden.de/~hoffmann/hlscone03052001.pdf

Best regards --Gernot Hoffmann


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