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Raster Dataset - Resolution Loss

Question asked by geonetadmin on Jul 21, 2011
Latest reply on Jan 20, 2012 by rleclair-esristaff
Original User: mariposaducharme


I am just starting to work with Raster datasets. I am using them to "stitch" aerial imagery "tiles" together so that they appear continuous when draped on a 3D surface.

I did a test-run, with two tiles, and found that I lost some resolution...

Both the original files (tiffs) and the raster dataset have the same cell size (0.25m) and  both are in the same projecttion. Both have pyramids built. When I zoom in, lets say at 1:5000, the images differe, but only slighlty. But when I zoom out, lets say at 1:16000, the images differ in quality (see screen shots) and the raster dataset looks really grainy.

I do want to use the raster dataset, but this loss in quality is not acceptable since my final product will be in the zoom range where the image gets very grainy.

I am hoping that someone with more experience can give some insight- I would appreciate!