12. The method of claim 11 , wherein the image is captured using a camera of a mobile device, wherein the functional graph is computer-generated using a processor of the mobile device, and wherein the GUI is presented at a display of the mobile device.
12. The method of claim 11 , wherein the image is captured using a camera of a mobile device, wherein the functional graph is computer-generated using a processor of the mobile device, and wherein the GUI is presented at a display of the mobile device. 14. The method of claim 12 , further comprising: receiving user input confirming the functional graph; and in response to receiving the user input, generating program code corresponding to the functional graph.