Save and reopen ROI over SAR images

ABraun thanks a lot for such good info. You re absolutely right, the GLCM window size results in different texture measures. I have tested 5x5, 7x7, 9x9, and 11x11 window sizes over the same SAR texture image using the same water ROIs. This is what I got:

For 5x5: (0.16, 21) it produced the noisiest water mask
For 7x7: (0.03, 10.9)
For 9x9: (0.3, 9.55)
For 11x11: (0.3, 11.3)
under the quantization levels of 32 bits

It sounds like that the lower window size, the higher GLCM value. However, theoretically the GLCM range mostly varies (0,1). There might be other elements that cause the GLCM measures through SNAP exceed 1.

Thanks also for links. :grinning: