Recent attempts at unrolling bottle labels

[Ofnuts]

• Worked out the math to generate a displace map
  
• Figured out that Gimp displace map doesn't work at all as described in the doc
  
• Worked out some more math to generate a displace map that pleases Gimp
  
• Eventually got some satisfactory results
  

From this:

   

To this:

   

Now to script the whole thing.