HornetsEye

HornetsEye is a Ruby real-time computer vision extension running under GNU/Linux and Microsoft Windows. It offers interfaces to do image- and video-I/O with ImageMagick/Magick++, Xine, firewire digital camera (DC1394), and Video For Linux (V4L). HornetsEye is implemented in Ruby and thus can be used interactively. HornetsEye is free software!

• HornetsEye homepage

Future: The current plan is to split up HornetsEye into several Gems. Installation will be easier and it will also be possible to use the array classes without having to install the I/O-related parts (cameras, image files, video files, …) of the software. Alpha versions of the Gems are available (as free software).

• malloc
• multiarray

AnyMeal

AnyMeal is a GNU/Linux recipe database software developed using MySQL and XML. It can manage a cookbook with more than 100,000 recipes, thereby allowing to search, display, edit, import, and export them. AnyMeal is designed to be lean and flexible. AnyMeal is free software!

• AnyMeal homepage

Mobile Streetmaps

MobiNav is a small J2ME application for mobile phones which can display multiresolution maps. The software can display the direction to a target location and it can zoom in and out very quickly using a pre-recorded multiresolution pyramid. MobiNav is free software!

You can download the map of Weybridge here (license: GFDL).

• MobiNav.jad (242 Byte)
• MobiNav.jar (186.10 KiB)
• MobiNav.tar.gz (179.07 KiB)

There are more maps for mobile phones on the MMVLWiki. The world map is also available at getjar.com.

Gyroscope Simulator

The gyroscope simulator simulates a block-shaped mass, which is rotating in free space. Using the mouse-cursor the rotational impulse vector may be specified. After this the model rotates or tumbles. I’ve compiled the sources under GNU/Linux. The C++ source code is available as archive gyration.tar.gz (11.66 KiB). For compilation the Qt3-library which is available at Nokia is required (you can find Qt3 on Nokia’s FTP server). You also need to install boost, lapack, blas and probably f2c. After editing the Makefile the executable is generated using make.

Depth From Focus

Depth From Focus is a popular algorithm in microscopy. By maximising a simple sharpness measure such as local gradient or variance over the depth, one can obtain 3D reconstructions of microscopic surfaces. In my (German) diploma thesis about reconstruction of micro objects based on focus sets I have developed a multiresolution algorithm to cope with systematic errors. There also is a (English) paper about the algorithm. An implementation of a simplified multiresolution algorithm is available on the MMVLWiki.