Here are some places where you can look for information about Segmentation-based Multimodal Rigid Image Registration:

Forums
  1. open-discussion: General Discussion
Trackers
  1. Bugs: Bug Tracking System
  2. Support: Tech Support Tracking System
  3. Patches: Patch Tracking System
  4. Feature Requests: Feature Request Tracking System
Wiki
Segmentation-based Multimodal Rigid Image Registration has a wiki that can be found here.