Image up-sampling using deep cascaded neural networks in dual domains for images down-sampled in DCT domain.
Kwok-Wai HungKun WangJianmin JiangPublished in: J. Vis. Commun. Image Represent. (2018)
Keyphrases
- low pass filtering
- dct domain
- input image
- jpeg compressed images
- image data
- image blocks
- image features
- test images
- sparsely sampled
- image retrieval
- image classification
- image regions
- jpeg images
- image resizing
- transform domain
- pixel values
- spatial domain
- compressed images
- post processing
- dct coefficients
- low pass filter
- lossy compression
- quantization step
- image reconstruction
- ground truth
- image quality
- human visual system
- discrete cosine transform
- compressed domain
- binary images
- low frequency
- digital images
- image compression
- image representation
- visual quality
- image segmentation
- frequency domain
- digital video
- reference frame
- blocking artifacts
- low pass
- gaussian noise
- gray level
- visual features
- block boundaries
- low level
- face recognition