Seeing Around Corners With Dual Photography
* http://graphics.stanford.edu/papers/dual_photography/
* Slashdot | Seeing Around Corners With Dual Photography
Tags: Dual, Film_/_TV, Graphics, Photography, Technology
* http://graphics.stanford.edu/papers/dual_photography/
* Slashdot | Seeing Around Corners With Dual Photography
Tags: Dual, Film_/_TV, Graphics, Photography, Technology
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July 16th, 2005 at 11:51
This “seeing around corners” claim is not true. Nor is the claim entirely true that the picture is ‘from the perspective of the projector (light source)’. The reason, quite evident in the “dual photograph” image provided, and all other “dual photograph” pictures you will see in the future, is that any area NOT visible by the camera, but visible by the projector (light source) is blacked out, like a shadow. NO information is ‘captured’ from a surface that is not already visible by the camera (i.e., no seeing around corners). So, the ‘perspective’ of the projector (light source) is that the nose of the teddy bear is not casting a shadow on the far side of it’s face away from the camera (if you were standing behind the light source and looking at the object, you would see no shadows in the midst of the scene, and barely any at the outskirts). Yet, when seeing the picture that is ostensibly from the perspective of the light source, you clearly see ‘shadows’ as if the camrea were the lightsource. The ‘perspecive’ of the light source sees no shadows…. the dual photograph shows blacked out areas (that look like shadows) any place that the camrea can not see.