3 ms·
Do they have a lower effective resolution at different projections due to light reflected being somehow less direct (more reflections?)?
by eximius 7y ago
Do they have a lower effective resolution at different projections due to light reflected being somehow less direct (more reflections?)?
- GistNoesis 7y agoYes. The best views will be from projections whose camera position is at a point scanned by the laser. With the f-k migration algorithm, the output is in fact the aligned sum of 2.5D images that would have produced by cameras located at the laser scanned locations. The algorithm is based on a simple model which doesn't take into account obstructions or secondary ray reflections. In theory for slower algorithms in O(N^5) like inverting the rendering engine you can take obstructions, and ray bouncing into account, but the effective resolution will depend on the dynamic range of your measurements, that you can improve a little by increasing exposure time. In practice reflections don't carry enough information. You can also incorporate phase information (like with holograms) instead of just intensity, if you are able to measure it to get sharper image thanks to coherent imaging. Once you use the phase information, you can improve the spatial resolution, using multiple wavelength.