Computer vision based eyewear selector

The widespread availability of portable computing power and inexpensive digital cameras are opening up new possibilities for retailers in some markets. One example is in optical shops,where a number of systems exist that facilitate eyeglassess election. These systems are now more necessary as the market is saturated with an increasingly complex array of lenses,frames,coatings,tints,photochromic and polarizing treatments,etc. Research challenges encompass Computer Vision,Multimedia andHuman-Computer Interaction. Cost factors are also of importance for widespread product acceptance. This paper describes alow-cost system that allows the user to visualize different glasses models in live video. The user can also move the glasses toadjust its position on the face. The system,which runs at 9.5 frames/s on general-purpose hardware,has a homeostatic modulethat keeps image parameters controlled. This is achieved by using a camera with motorized zoom,iris,white balance,etc. Thisfeature can be specially useful in environments with changing illumination and shadows,like in an optical shop. The system alsoincludes a face and eye detection module and a glasses management module.