Metropolis Light Transport calculation of a protostellar disk

This is a test calculation using the concept of Metropolis Light Transport (http://en.wikipedia.org/wiki/Metropolis_light_transport) to calculate an image including the effects of dust. The advantage of MLT over "normal" Monte Carlo is that it will concentrate on generating ray paths that actually contribute to the output, thus boosting efficiency. The image on the left was generated with an implementation of MLT in the Sunrise radiation-transfer code, while the one on the left is using the standard algorithm. The computer time spent is the same, so it is obvious that the MLT algorithm is more efficient.

The cluster of points that show up to the right of the center at around 0:05 in the left view were due to a bug in the program (the seed paths were incorrectly added to the camera, in addition to the MLT paths themselves).

Category:

Science & Technology

Tags:

• Astrophysics
• Astronomy
• Computer simulations
• Galaxies
• Radiation transfer
• Metropolis-Hastings