Gets the Signal To Noise Ratio value.
A double value that represents the Signal To Noise Ratio (SNR) as the 10*log10 of the real value. This value gives an indication of the homogeneity of adjacent pixels in an image.
This function can only process entire images. It does not support regions.
This function supports 24- and 36-bit color images and 8-bit grayscale images.
For an example, refer to SignalToNoiseRatioCommand