#2 GPIV does not compute the same value between two invocations

[Sylvain NAHAS]

Consider the following python code:

im = Image.new("L", (512, 1024), "white")
im.Name="test1.png"
im.save(im.Name)
piv_interrogate_image(im.Name, "img1.piv", "gpivrc",TRUE,FALSE)
piv_interrogate_image(im.Name, "img2.piv", "gpivrc",TRUE,FALSE)

It creates an empty image and call piv_interrogate_image twice. We would expect the resulting files "img1.piv" and "img2.piv" to be the same, but they differ.