Estimation error bounds for denoising by sparse approximation.
Alyson K. FletcherKannan RamchandranPublished in: ICIP (1) (2003)
Keyphrases
- estimation error
- sparse approximation
- denoising
- noise model
- linear combination
- noisy images
- image denoising
- sparse coding
- total variation
- natural images
- upper bound
- gaussian noise
- image processing
- error rate
- convex relaxation
- gaussian process
- lower bound
- standard deviation
- covariance matrix
- noise level
- step size
- cost function
- regression model
- bit rate
- unsupervised learning
- face recognition