Revision as of 17:59, 19 December 2005

Here are some typical microscope images (showing a surface, which has been shaped using a power beam).

First surfi-sculpt object, Leica DM LAM

Second surfi-sculpt object, Leica DM LAM

Piece of Suevit (enamel like material from meteorite impact) from the Nördlinger Ries, Leica DM RXA

Micro-camera image of a hair on top of a laser printout

Using a focus-stack one can compute images with extended depth of focus:

Extended depth of view for first object

Extended depth of view for second object

Extended depth of view for Suevit (fringes have been removed manually)

Extended depth of view for the hair

If the surface can be illuminated properly, one can even do a 3D-reconstruction of the surface:

3D reconstruction of first object (742kB video)	3D reconstruction of second object (725kB video)	[[Image:suevit20.png	200px|3D reconstruction of suevit (1.4MB video)]]	3D reconstruction of hair (1.4MB video)
Red-cyan anaglyph image of first object (2.0MB video)	Extended depth of fild image for a piece of sugar (compare with 532 kByte video of focus stack)

As the idea for the algorithm was fixed already, it was possible to implement the algorithm as a command-line tool in less than 4 days, using existing Mimas-software (exspecially the operators for boost::multi_array).

As this is a "quick hack", there's still lots of space for improvements.

Links

• Anaglyph images
• german diploma thesis about depth of focus (also available as PDF)
• Mechrob-paper Focus set based reconstruction of micro-objects