O.K. writes:

I don’t know if you have seen what’s new on Mario’s webpage:

Besides, I would like to send those interesting pictures. The first one are Enrie photos from Wikipedia. The second one are processed in the ImageJ using Process>Find Edges function. Interesting as they outline no contours on the Shroud Image, as well as several folds.

Indeed. This is a nice and useful update. Check it out. And here are the pictures from O.K.: