Extracting key frames from consumer videos using bi-layer group sparsity.
Zheshen WangMrityunjay KumarJiebo LuoBaoxin LiPublished in: ACM Multimedia (2011)
Keyphrases
- key frames
- group sparsity
- structured sparsity
- dictionary learning
- sparse coding
- visual features
- video data
- low rank
- video sequences
- instructional videos
- low level features
- video summarization
- feature vectors
- discriminative power
- image processing
- sparse representation
- linear combination
- video frames
- action recognition
- keywords
- multiscale
- information retrieval