 Read Distinctive Image Features from Scale- Invariant Keypoints by Lowe  Dr. Tappen also gave a presentation on SIFT.  Helped clarify, what is going.

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Presentation transcript:

 Read Distinctive Image Features from Scale- Invariant Keypoints by Lowe  Dr. Tappen also gave a presentation on SIFT.  Helped clarify, what is going on “under the hood.”

 TRECVID utilizes SIFT.  Starting this weekend, I will be testing the various parameters of our feature descriptor executable.  I will start by comparing Harris-Laplace and dense-sampling.

 Logistic Regression is currently our method of training.  A problem is it could fire too much on a particular bin.  Correct this with a sort of penalty addition to our logistic regression code.

 How to weight it?  The goal is to determine the best lambda experimentally.  Spent quite a bit of time on this last night. (getting some errors)  This will increase the error in training, but decrease testing error.

 Generate some valid results with generalization.  Work on our SIFT executable trying to get better results.