1 / 11

Human Action Recognition Week 9

Taylor Rassmann. Human Action Recognition Week 9. Hierarchical SVMs. Look at a confusion matrix of the UCF50 dataset Dollar Features Find the two most confused classes Train an SVM specifically on these two. Hierarchical SVMs.

lahela
Télécharger la présentation

Human Action Recognition Week 9

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Taylor Rassmann Human Action RecognitionWeek 9

  2. Hierarchical SVMs • Look at a confusion matrix of the UCF50 dataset • Dollar Features • Find the two most confused classes • Train an SVM specifically on these two

  3. Hierarchical SVMs • Retrain and test with one less label than the previous iteration • Repeat for multiple levels 50 48 2

  4. Initial Confusion Matrix

  5. Hierarchical SVMs: Level 1 • High jump = +8% improvement • Javelin throw = +7% improvement High Jump Initial 59% Javelin Throw Initial 50% High Jump Final 67% Javelin Throw Final 57%

  6. Hierarchical SVMs: Level 2 • PICTURE • Biking = 0% improvement • Walking with dog = +4% improvement Biking Initial 51% Walking With Dog Initial 34% Biking Final 51% Walking With Dog Final 38%

  7. Hierarchical SVMs: Level 3 • PICTURE • Kayaking = +4% improvement • Skiing = +3% improvement Kayaking Initial 72% Skiing Initial 60% Kayaking Final 76% Skiing Final 63%

  8. Hierarchical SVMs: Level 4 • PICTURE • Basket Ball = +3% improvement • Tennis Swing = -1% improvement Basket Ball Initial 41% Tennis Swing Initial 64% Basket Ball Final 44% Tennis Swing Final 63%

  9. Hierarchical SVMs: Level 5 • PICTURE • Nun chucks = 0% improvement • Yo-yo = +2% improvement Nun Chucks Initial 48% Yo-Yo Initial 73% Nun Chucks Initial 48% Yo-Yo Initial 75%

  10. Level 5 Confusion Matrix

  11. Current Work • Continue with more levels of the hierarchical SVM • Instead of using the two most confused actions • Retrain with highest confused and highest accuracy

More Related