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<p>Hi,</p>
<p>Is there a way to store nodata values in GeoTiffs that don't match an RGB value? I used either white or black as nodata values, but in some rare cases these black or white pixel values do appear as valid data in the image.</p>
<p>How can I properly store nodata values in RGB Orthoimages in GeoTiffs where the borders aren't purely rectangular?</p>
<p>Would I have to use a hard mask for regions where there is no data, or is there a trick with an alpha band?</p>
<p>Thank you for any hints and greetings,</p>
<p>Andreas</p>
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