PSF Estimation in Crowded Astronomical Imagery as a Convolutional Dictionary Learning Problem.
Brendt WohlbergPrzemek R. WozniakPublished in: IEEE Signal Process. Lett. (2021)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- natural images
- linear combination
- image classification
- object category recognition
- group sparsity
- image super resolution
- unsupervised learning
- image data
- high resolution
- generative model
- image patches
- computer vision
- image representation
- feature space
- sparse codes
- visual words
- image processing
- high dimensional
- higher order
- data mining
- bag of words
- similarity measure
- sparsity constraints
- co occurrence
- principal component analysis
- image segmentation