Hi all,<br><br>I&#39;m working on the color spaces, and would like some feedback. Doing color space conversions is very simple, but finding the right references and making sure things are correct is a real pain. So I&#39;m wondering what spaces are useful and unambiguously defined. <br>

<br>So far I have<br>-----------------<br>- RGB : sRGB with D65 whitepoint, the &quot;central&quot; color space in the API.<br>- HSV : unambiguous<br>- XYZ : unambiguous<br>- CIE RGB : unambiguous <br>- RGB NTSC : from Travis&#39; code, not sure what it is. Not equal to YIQ, which is the color space used for NTSC. Will delete again unless I figure it out.<br>

<br>Some code, seems clearly defined<br>----------------------------------------------<br>- CIE LAB<br>- CIE LUV<br><br>Some code, but not sure about<br>-----------------------------------------<br>- RGBP : gamma corrected sRGB. I am usually interested in intensities / photon counts, so I have a natural aversion to this one. Anyone care?<br>
- YIQ : see RGB NTSC above<br>
- RGB SB : Stiles and Burch (1955) 2-degree RGB color space. seems obsolete.<br>- UVW : seems obsolete<br>- YUV / YCbCr / YCC / YPbPr / 8-bit YCbCr : these are all similar and often confused. A mess.  <br><br>No code yet, but commonly used<br>
--------------------------------------------<br>- HSL<br>- CMYK<br><br><br>The code I have so far lives here: <a href="http://github.com/rgommers/scikits.image/tree/color">http://github.com/rgommers/scikits.image/tree/color</a><br>
<br>I&#39;m afraid adding color spaces that are not clearly defined does more harm than good, so please let me know which color spaces are useful for you. <br><br>Cheers,<br>Ralf<br><br> <br>