Keyphrases
- sparse coding
- dictionary learning
- denoising
- unsupervised learning
- learning algorithm
- reinforcement learning
- natural images
- image processing
- sparse representation
- prior knowledge
- lidar data
- linear combination
- image classification
- supervised learning
- image analysis
- pairwise
- pattern recognition
- signal processing
- small number
- image data
- visual words
- computer vision
- machine learning