NIPS 2010 - Perceptual Bases for Rules of Thumb in Photography
The first invited talk today was Martin Banks talking about "Perceptual Bases for Rules of Thumb in Photography" . It was a psychological talk, it does not directly have any thing to do with machine learning or computer vision but it was nevertheless very interesting - even more though as I am a hobby photographer . The overall theme was how people perceive photographs and pictures on screens and what are the geometric and psychological sources of some effects. In particular he focused on three topics: Wide angle distortion Depth compression and expansion Depth of field effects The first part about wide angle distortion is about the effect that images that are captured with wide angles seem distorted. This is the reason why in portrait and beauty photography usually a long focal lens is used. From a projective geometry point of view, it is easy to see why this happens - and it is geometrically correct. But we still perceive it as "wrong". The question is: Why...