I just ran across this interesting article on slashdot describing a project to create 3D models of famous landmarks (Tower of Liberty, Notre Dame Cathedral) by algorithmically combining photos posted on flikr. Apart from the technical coolness of the project what struck me about the article was their long term goal of creating full 3D reconstructions of cities by combining the information from billions of online photographs. This project is a perfect illustration of how absurd opposition to projects like google’s street view truly is.

While it may have been intellectually obvious before this sort of project really drives home the fact that increasing computational power and algorithmic advances in computer vision negate the need for any coordinated database. So long as their are enough pictures out there somewhere the right algorithm can sow them back together and extract whatever information you want out of them. Right now the best we might be able to hope for is a fancy version of google’s street view but the inevitable increase in the amount of online content (webcams, automated picture taking etc..) and the inexorable progress of the computer industry means that eventually we will be able to figure out who you are sleeping with¹, where you buy your groceries and even reveal certain health problems.

There is no way around it. Computational advances will eliminate obscurity. The only real question is whether we implement ultimately ineffective laws about ‘privacy’ that will give large organizations with massive computing power an informational advantage until computational power catches up. Anyway I’m repeating myself some I’m going to stop now.