Layered image coding using the DCT pyramid
Kuan Hui Tan, M. Ghanbari · IEEE Transactions on Image Processing · 1995
A block-based subband image coder that exploits the ability to perform decimation in the discrete cosine transform (DCT) domain to effect a pyramidal data structure is described. The proposed "DCT pyramid" has a distinct feature of improved image rendition properties without the associated blocking artifacts at low bit-rates.