Original User: dkwiens
Thanks for the reply, Jeff. The rasters are 1 bit (in ArcGIS, at least), which I take to mean 0,1. How do I: a) change the bit depth, if they are already 1 bit, or b) fix this with the resampling method? I'm confused whether I need to re-scan the photos with different settings, or if I can fix this with ArcGIS settings/tools.
edit: building pyramids using either bilinear or cubic interpolation methods did not work.
update: with help from Customer Support, we figured out that if I use a brand new copy of the image (which has never had nearest pyramids built) and then build bilinear resampled pyramids, it works. Seems pretty random, hopefully this helps someone else...