Low-Dose CT Image Denoising Model Based on Sparse Representation by Stationarily Classified Sub-Dictionaries.
Wenbin ChenYanling ShaoLina JiaYanling WangQuan ZhangYu ShangYi LiuYan ChenYanli LiuZhiguo GuiPublished in: IEEE Access (2019)
Keyphrases
- sparse representation
- image denoising
- low dose
- x ray
- computed tomography
- denoising
- ct scans
- imaging modalities
- total variation
- natural images
- noisy images
- sparse coding
- ct images
- computer tomography
- lung nodules
- image classification
- medical images
- contrast enhancement
- face recognition
- image processing
- image patches
- image reconstruction
- wavelet coefficients
- signal processing
- image representation
- denoising algorithm
- compressive sensing
- high dimensional data
- medical imaging
- dimensionality reduction
- low contrast
- ct data
- three dimensional
- co occurrence
- high quality
- image segmentation