1) Is anyone able to explain in simple manner what does mean error exactly mean? I use metric values, so suppose 3.64109 is expression of meters and "e" is mathematical constant: http://en.wikipedia.org/wiki/E_%28mathematical_constant%29 but what's next?
2) Why does image become more brighter after TPS transformation?
I work on archival aerial imagery and I'm testing all of the transformation types and re-sampling methods to find the best one. As you can anticipate, I'm not mathematician and I'd like to understand what's result of my work in fact.