The Breakthrough
The breakthrough in Kelly's case came when Binks and Roach realized that the software could be used to analyze images taken by drones, rather than simply inputting specific colors to search for. By counting the number of pixels of a particular color, and then highlighting clusters of unusual colors, the software could effectively locate missing persons in dense or rugged terrain.
The software was tested in the wild, behind the Glencoe Ski Center, where Kelly's body was eventually found. The area had been extensively searched by Glencoe Mountain Rescue, but Kelly's body had fallen into a gully, obscuring the line of sight of rescuers on the ground.