Find rms difference between images.
Find rms difference between images.

JoeBartelmo/goddard,JoeBartelmo/PyDetect,JoeBartelmo/goddard,JoeBartelmo/PyDetect,JoeBartelmo/goddard,JoeBartelmo/PyDetect,JoeBartelmo/PyDetect,JoeBartelmo/goddard,JoeBartelmo/goddard,JoeBartelmo/PyDetect