Hello all,

I am a newbie in color management.

I followed the "tifficc" sample project.

I am using sRGB Stock Profile as the output profile.

I have an RGBA8 (32-bit) tiff files. But this sample project transforms the
files into RGB8 (24-bit) tiff files without the alpha channel.

I want to preserve alpha channel in the transformed tiff files. How can I
make this happen?

In the tifficc.c file I changed the following global variable to TRUE

static LCMSBOOL StoreAsAlpha = TRUE;

but the result is same as before.

I also converted RGBA16 (R = 16 Bits, G = 16 Bits, B = 16 Bits, Alpha = 16
Bits) files Total (48bits). This is also converted to RGB24 bit.

The main question is how do I preserve the alpha channel?

Please help

Mitesh Raj Pandey.


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