Feature Similarity and Frequency-Based Weighted Visual Words Codebook Learning Scheme for Human Action Recognition.
Saima NazirMuhammad Haroon YousafSergio A. VelastinPublished in: PSIVT (2017)
Keyphrases
- visual words
- learning scheme
- bag of words
- visual codebook
- image features
- action recognition
- image classification
- spatial pyramid
- bag of visual words
- image representation
- image retrieval
- co occurrence
- learning algorithm
- spatial pyramid matching
- vector quantized
- spatial information
- scene classification
- soft assignment
- keypoints
- vocabulary tree
- visual vocabulary
- visual phrases
- object retrieval
- bag of features
- object categories
- visual content
- sift descriptors
- similarity measure
- feature vectors
- distance measure
- bag of words models
- gaussian mixture model
- semantic similarity
- text classification
- feature space
- human actions
- information retrieval
- vector quantization
- pairwise
- image processing
- computer vision
- scale invariant feature transform
- euclidean distance
- image similarity
- maximum likelihood
- image database
- multiscale
- spatially close