I am an archaeologist with little background in blender. I'm not sure if unwrapping is what I want, so I put the word in quotes. I have a model of a pot which I generate in photoscan with a pattern running around it. It already has a UV map, which was generated when Photoscan has generated a texture for the pot. However the texture doesn't show the band of decoration as a continuous pattern. I would like to be able to unwrap the pattern in one long strip as a 2D image, so that I could publish the flattened image. How would I do that?