Category: Imaging

[BeagleBoard] Beagle Battery Prototype

Prototype assembled and tested I have designed these 12 beagleboard battery prototypes. I have assembled one, and it actually has only a few small errors; none of which need rerouting. It actually works well,...

[Optics] Tutorial on Polarization and Birefringence

Introducing: My new crystal. All optical calcite’s from china are cheap but they’re yellow as morning glory. That’s why i bought some Icelandic Spar (rhombohedron shape). Birefringence in an icelandic spar rhombohedron This is...

[Linux] Beagleboard on Batteries

[Linux] Beagleboard on Batteries

You can choose for the $80 Beaglejuice battery that carries a small lipo battery. But i find the price a bit too hefty, although it looks good. The prices of liquidware are not quite...

[2D] Optical flow

[2D] Optical flow

This is a function for optical flow in Matlab, using Lucan-kanande/Horn-Schunck optical flow estimation. It includes a sample code and the function itself. Assumptions behind the Lucas-Kanade and Horn-Schunck Optical Flow Estimation methods Both...

[2D] X-Rite Colorchecker SG ruler

[2D] X-Rite Colorchecker SG ruler

There is something weird about the Gretag Macbeth X-rite ColorChecker SG test target. Today i was working on the universal target software, working out the DPI from the SG alone. So i was confused...