Patch based fast noise level estimation using DCT and standard deviation.
S. B. MohanT. A. RaghavendiranR. RajavelPublished in: Clust. Comput. (2019)
Keyphrases
- standard deviation
- noise level
- estimation error
- noisy images
- noise reduction
- error rate
- noise estimation
- low light conditions
- normal distribution
- hyperparameters
- correlation coefficient
- gaussian noise
- impulse response
- low light
- discrete cosine transform
- image compression
- signal to noise ratio
- image patches
- root mean square error
- low resolution
- dominant orientation
- natural images