I am (very) new to ImageJ/FIJI and I was trying to use Big Warp on a pair of .png images I have. They are very simple two-dimensional images, 512x512, 1MB, RGB. After I select them as the moving and fixed images, I get the following warning in the console. The viewers do not display any images either, so I have no way of using the landmark tool.
WARNING: Opening <SpimData> dataset that is not suited for interactive browsing. Consider resaving as HDF5 for better performance.
Following the advice of the warning, I tried resaving as HDF5 (although I am, again, completely unfamiliar with the proper way to do this) but I did not get anywhere with that either.
Thank you for any help you may be able to provide.