A novel feature extraction method using Pyramid Histogram of Orientation Gradients for smile recognition.
Yang BaiLihua GuoLianwen JinQinghua HuangPublished in: ICIP (2009)
Keyphrases
- extended gaussian image
- recognition rate
- object recognition
- recognition accuracy
- multiscale
- multiresolution
- orientation histogram
- facial expression recognition
- histogram of oriented gradients
- shape recognition
- image processing
- histograms of oriented gradients
- selectivity estimation
- gray level
- feature vectors
- pattern recognition
- gabor filters
- activity recognition
- image features
- recognition scheme
- feature extractor
- highly discriminative
- feature extraction
- spatial pyramid matching
- vocabulary tree
- orientation selective
- computer vision