A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a ...

The Belfry OpenScad Library, v2.0. An OpenSCAD library of shapes, masks, and manipulators to make working with OpenSCAD easier. BETA - shapes3d.scad · BelfrySCAD/BOSL2 Wiki ...

Widely used image quality metric peak signal-to-noise ratio, PSNR, doesn't correlate very well with human judgment. In this paper, we show that using multi-scale image decomposition before calculating ...