This tutorial uses FlowerUnwarp by Golan Levin and Kyle McDonald.
To see their work go to the above link, and to Rectified Flowers.
To use FlowerUnwarp to distort photographs, do the following.
1) Download FlowerUnwarp.
2) Navigate to where you downloaded FlowerUnwarp.
3) Create a shortcut to the FlowerUnwarp folder.
Right click on the FlowerUnwarp folder, click Send to, and select Desktop (create shortcut).
You'll use the shortcut to:
• Go to the data file to change the photograph.
• Go to the output file to retrieve the saved rectified photographs.
4) Download Processing.
5) Navigate to where you downloaded Processing.
6) Open the processing-1.2 folder, and look for the processing.exe file.
7) Create a shortcut to the processing.exe file on your Desktop.
Right click on the processing.exe file, click Send to, and select Desktop (create shortcut).
You'll use the shortcut to run the FlowerUnwarp program using the processing.exe program.
8) Download the ControlP5 library.
9) Install the controlP5 folder in the following location.
Windows 7: C: > Users > username > Documents > Processing > libraries
Mac: Username > Documents > Processing > libraries
5) Run processing.exe using the Desktop shortcut you made above.
6) Go to File > Open, or press Ctrl + o.
7) Navigate to FlowerUnwarp.pde, which is located in the FlowerUnwarp folder.
This folder is located where you downloaded the FlowerUnwarp program.
Windows 7: C: > Users > username > Downloads > FlowerUnwarp
We'll use the sample photograph, a daisy, that's included with FlowerUnwarp.
8) When the second window opens, click the run icon to launch FlowerUnwarp.
The run icon looks like a typical play icon, an arrow pointing to the right.
9) You can:
• Change the position of the red cross-mark by dragging it.
• Move the blue sliders in the upper-right corner by dragging them.
10) To save, press e.
The rectified photograph is saved to a folder called output, which is created automatically in the FlowerUnwarp folder.
C: > Users > username > Downloads > FlowerUnwarp > output
Use the FlowerUnwarp folder shortcut that you created above to go to the output folder.
11) To edit a different photograph, go to the data folder in the FlowerUnwarp folder.
Use the FlowerUnwarp folder shortcut that you created above to go to the data folder.
12) Delete or move the daisy photograph.
13) Paste a new photograph into the data folder.