Two-Dimensional Orthogonal DCT Expansion in Trapezoid and Triangular Blocks and Modified JPEG Image Compression.
Jian-Jiun DingYing-Wun HuangPao-Yen LinSoo-Chang PeiHsin-Hui ChenYu-Hsiang WangPublished in: IEEE Trans. Image Process. (2013)
Keyphrases
- jpeg image compression
- image compression
- dct coefficients
- discrete cosine transform
- block size
- image blocks
- lapped transforms
- square grid
- dct domain
- three dimensional
- transform domain
- compression ratio
- jpeg compressed images
- digital images
- compressed images
- feature vectors
- wavelet transform
- discrete cosine transformation
- image processing
- spatial domain
- compressed domain
- packing problem
- subband
- low bit rate
- multi dimensional