Single image super-resolution based on a modified U-net with mixed gradient loss.
Zhengyang LuYing ChenPublished in: Signal Image Video Process. (2022)
Keyphrases
- single image super resolution
- sparse coding
- super resolution
- dictionary learning
- image patches
- low resolution
- high resolution images
- high resolution
- feature selection
- image classification
- image quality
- natural images
- unsupervised learning
- sparse representation
- edge detection
- probabilistic model
- image gradient
- compressive sensing