#Polar-3D is a #CNC #3D-printer using polar coordinates to get multiple print heads, which don’t have to move, and avoid linear actuators and linear bearings entirely, except for a Z-axis which raises and lowers the whole table, including the motors. Also, the platters provide precisely known movement for a laser #3D scanner, thus avoiding #photometric-stereo and the like. #video #manufacturing
on 02015-08-13“Shape and Motion under Varying Illumination: Unifying #Structure-from-Motion, #Photometric-Stereo, and Multi-view Stereo”
on 02015-08-10Passive #photometric-stereo from motion. #toread
on 02015-08-10#photometric-stereo of smoothly-deforming Lambertian surfaces, LIKE YOUR FACE I guess. #toread
on 02015-08-10“#photometric-stereo with general, unknown lighting”, from 2006. Simple optimization using #spherical-harmonics in low-dimensional space.
on 02015-08-10A #DSP framework for light reflection for #3D reconstruction (“inverse #rendering”) and #BRDF (bidirectional reflectance distribution function) estimation using #spherical-harmonics. Aka #photometric-stereo. #toread
on 02015-08-10