#### Topic: H Parameter

Hi Sebastien,

I am looking at denoising the E/W and N/S correlation bands through the COSI-Corr NL Means Filtering procedure.

My current displacements from sand dunes are roughly in the order of 16m over 5 years from two ASTER images, derived from a 64-32 window size with 4 pixel step.

I just have a question regarding the noise parameter, H. As I understand it a good approximation for H is 1.6 * std dev of the noise. The manual discusses obtaining the noise from local statistics of the image, but I am slightly confused as to which values I am measuring exactly to obtain the noise std dev?

Many thanks.