A Sub-Pixel Gradient Compression Algorithm for Text Image Display on a Smart Device.
Kyudong KimChulhee LeeHyuk-Jae LeePublished in: IEEE Trans. Consumer Electron. (2018)
Keyphrases
- compression algorithm
- quadtree decomposition
- input image
- wavelet based image
- gradient magnitude
- edge detection
- gradient orientation
- lossless data compression
- gray level images
- image data
- edge map
- data compression
- cosine transform
- pixel values
- gradient field
- compression ratio
- file size
- multiscale
- image compression
- image derivatives
- image segmentation
- block coding
- jpeg images
- compression scheme
- binary images
- embedded image
- bitstream
- high compression ratio
- color distribution
- image blocks
- color palette
- arithmetic coder
- similarity measure