Saturday, May 31, 2014

Xtion Kinect alternative

http://www.newegg.com/Product/Product.aspx?Item=N82E16826785030

Kinect depth projection to real world coordinates

FovH = 1.0144686707507438 (rad) // horizontal field of view FovV = 0.78980943449644714 (rad) // vertical field of view From there you can find the real world coordinates from the depth cloud like so: // X_proj = X pixel number, Y_proj = Y pixel number // Xres = X resolution (640 for Kinect and Xtion, optional 320 for Xtion // Yres = Y resolution (480 for Kinect and Xtion, optional 240 for Xtion X_rw = (X_proj/Xres-.5) * Z * XtoZ Y_rw = (0.5-Y_proj/Yres) * Z * YtoZ, Z_rw = Z where XtoZ = tan(FovH/2)*2, and YtoZ = tan(FovV/2)*2, and Z is the value given by the depth map at each pixel.

Thursday, May 15, 2014

SQL tree solutions

http://www.slideshare.net/billkarwin/models-for-hierarchical-data

Wednesday, May 14, 2014

Restygwt + Jersey maven

http://ronanquillevere.github.io/2014/03/16/gwt-rest-app.html#.U3Qn_NDn8m8