Here are some places where you can look for information about S3DL Sparse Dictionary Learning based MR Image and Lesion Segmentation:

Forums
  1. open-discussion: General Discussion
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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
S3DL Sparse Dictionary Learning based MR Image and Lesion Segmentation has a wiki that can be found here.