Hi, I'm Chaitanya, 4th year undergraduate student in biomedical engg. I have an idea of making a mobile phone application which measures the power of your spectacle glasses. The idea is we take an image with the phone's inbuilt camera. One of the spectacle lens will be held in front of the camera such that it covers roughly half of the image. In this way, one half of the image (lens half) will be nearer than the other half. So, my questions are: 1. Can I do some image processing and give an estimation of the power of the lens? 2. How much time could this project take? Thanks, Chaitanya.