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color balance and mosaic several images

Forum|Forum|10 years ago
May 19, 2015
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pat8037

Hi,

I'm looking to process about ten large ECW files, these need to be color balanced all together so it's as seamless as possible.

In terms of the color, some tiles might be brightness changes, others need color tints

As a possible method, I was thinking if I manually picked a point to white balance in each file then perform cell value manipulation based on the RGB differences. I suspect it will be an average output though.

I'm not sure what transformers to be using. In photoshop its an intuitive slider available but I've not seen something in FME.

I could really do with ideas, transformers or processes on how to handle the color balancing. Thanks.

Best answer by david_r

Hi

Look at this article, in particular under the heading Color Correction:

https://knowledge.safe.com/articles/Samples_and_Demos/Examples-using-the-RasterExpressionEvaluator-Transformer

David

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