Question

Is it possible to do histogram equalisation in FME?

  • 6 July 2022
  • 1 reply
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I have a large set of raster images (they are aerial imagery) and they were taken under various different light conditions. I would like to use histogram equalisation to correct for this. Does anyone know if this is possible in FME please?


1 reply

Userlevel 4
Badge +25

I'm not sure about RGB images but I've done it for greyscale with the RasterExpressionEvaluator. Can't seem to find the workspace right now that does that so I can't tell you the formula.

 

But that's basically it, if you know which formula to use on the various bands you can use the RasterExpressionEvaluator to perform that action.

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