Spatial Domain Filtering for Fast Modification of the Tradeoff between Image Sharpness and Pixel Noise in Computed Tomography.
Stefan SchallerJoachim E. WildbergerRainer RaupachMatthias U. NiethammerKlaus Klingenbeck-RegnThomas FlohrPublished in: IEEE Trans. Medical Imaging (2003)
Keyphrases
- spatial domain
- additive noise
- computed tomography
- edge direction
- frequency domain
- log polar
- input image
- fourier domain
- ct images
- transform domain
- watermarked image
- medical imaging
- ct scans
- image reconstruction
- medical images
- image data
- pixel values
- cover image
- image analysis
- image segmentation
- motion estimation
- computer tomography
- secret image
- dct domain
- data hiding
- discrete cosine transformation
- region of interest
- gaussian noise
- fourier transform
- back projection
- high resolution
- computational complexity
- multiscale
- three dimensional
- noise level
- noisy images
- remote sensing
- x ray
- edge detection
- motion artifacts