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Registration Without Ground-Truth Solution - Proof of Concept/Empirical Evidence
Posted on Thursday, September 15 @ 18:19:20 BST by admin
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T has been rather long since an update was last posted. I am pleased to have stitched together some results from one month of computer labour. The joint and averaged results prove that our endeavour has been a smashing success.
Below lie two graphs which illustrate our ability to evaluate registration without any ground truth, e.g. data labels which had been manually placed a priori. In other words, we can evaluate registration from just the raw images and the registration's deformation fields. The method relies on models of appearance and the shuffle distance, as previously and quite repeatedly described. The method was also shown to be correlated with results that are in fact based on the ground truth, namely the manually annotated brains from MGH. More information on these results is available in a previous write-up.
Our measures increase monotonically as mis-registration in brain data increases (click to enlarge)
As misregistration increases, so do the Specificity and Generalisation ability of an automatically constructed appearance model.
The implementation we took advantage of had been written in C++, but it was derived from my earlier and equivalent implementation in MATLAB, soon to be published as an Open Source project.
Meanwhile, I am beginning to write up my thesis, which will cover all my work rather concisely and yet at a greater level of depth.
I recently noticed that a few dozens of people syndicate this site and/or have subscribed as members. Thank you all very much for showing interest.
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| Wednesday, October 19 | | · | Registration Assessment Without Ground Truth Proven Most Sensitive |
| Thursday, September 15 | | · | Registration Without Ground-Truth Solution - Proof of Concept/Empirical Evidence |
| Friday, September 02 | | · | FTP Access or a ZIP Archive |
| Wednesday, August 24 | | · | Registration: Tanimoto Overlap and Model-based Evaluation |
| Thursday, August 18 | | · | Specificity, Generalisation and Registration |
| Monday, July 25 | | · | Placing Labels at Strong Edges |
| Tuesday, July 19 | | · | Model Construction and Registration in Medical Imaging |
| Thursday, July 14 | | · | Euclidean Image Distance |
| Thursday, July 07 | | · | Evaluation of Appearance Models |
| Tuesday, July 05 | | · | Parallel Work |
| Monday, July 04 | | · | Label Propagation |
| Sunday, July 03 | | · | Segmentation Propagation from Model |
| Friday, July 01 | | · | Segmentation in Relation to Models and NRR |
| · | Mean of Squared Differences (MSD) Unstable at Registration |
| Thursday, June 30 | | · | 3-D Surface Visualisation |
| · | Migration of Code |
| · | MIAS-IRC and MARS |
| Wednesday, June 29 | | · | Simultaneous Segmentation, Registration and Models |
| · | Migration from AART to MARS |
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