Caps for CIE 1931 XYZ color space for HDR processing

Josh Doe josh at
Sat Nov 5 07:48:07 PDT 2011

I'm interested in processing HDR images, and a new library libhdr
(derived from pfstools) has just started, in order to provide HDR
processing including tone mapping. They use the XYZ color space (CIE
1931), so I'd like to define caps for this. I'm not sure if there's
interest in this colorspace, but perhaps I could at least get some
feedback on this.

width = (int) [1, 2147483647]
height = (int) [1, 2147483647]
endianness = (int) BIG_ENDIAN, LITTLE_ENDIAN
depth = (int) 16, 32, 64, 128
luminance = (string) "relative", "absolute", "display"
channel_order = (string) "XYZ", "XYZA", "ZYX", "Y", "YA", ...

Here's the PFS file format spec:


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