Single-image super-resolution reconstruction based on global non-zero gradient penalty and non-local Laplacian sparse coding.
Jinming LiWeiguo GongWeihong LiFeiyu PanPublished in: Digit. Signal Process. (2014)
Keyphrases
- single image super resolution
- sparse coding
- dictionary learning
- natural images
- sparse representation
- linear combination
- unsupervised learning
- image classification
- generative model
- image representation
- image patches
- feature space
- visual words
- higher order
- data sets
- high dimensional
- reinforcement learning
- probabilistic model
- supervised learning
- super resolution
- high resolution
- object recognition
- multiscale
- high quality
- image segmentation