Bag of Words Model for Image Classification - Lecture 16

Bag of Words Model for Image Classification - Lecture 16

UCF CRCV via YouTube Direct link

Scene classification

22 of 33

22 of 33

Scene classification

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Bag of Words Model for Image Classification - Lecture 16

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  1. 1 Intro
  2. 2 Difficulties: within class variations
  3. 3 Bag-of-features - Origin: texture recognition
  4. 4 Bag of Words Model
  5. 5 Bag-of-features - Origin: bag-of-words (text)
  6. 6 Bag-of-features for image classification
  7. 7 feature extraction
  8. 8 Dense features
  9. 9 Step 2: Quantization
  10. 10 K-means Clustering: Step 1 Algorithm: kmeans, Distance Metric Euclidean Distance
  11. 11 Example: 3-means Clustering
  12. 12 Examples for visual words
  13. 13 Training data Vectors are histograms, one from each training image
  14. 14 Examples for misclassified images
  15. 15 Evaluation of image classification
  16. 16 PASCAL 2007 dataset
  17. 17 Results for PASCAL 2007
  18. 18 Step 3: Classification
  19. 19 Image representation
  20. 20 Spatial pyramid matching
  21. 21 Spatial pyramid representation
  22. 22 Scene classification
  23. 23 Retrieval examples
  24. 24 Category classification - CalTech 101
  25. 25 Discussion
  26. 26 Weizmann Action Dataset
  27. 27 KTH Data Set
  28. 28 UCF Sports Action Dataset
  29. 29 IXMAS Multi-view Data Set
  30. 30 UCF YouTube Action Dataset (UCF-11)
  31. 31 Bag of Visual Words model (II)
  32. 32 Histogram of Optical flow (HOF)
  33. 33 HOF Steps

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