Autoregressive Estimation of High-Frequency Components in DCT Image Coding

  title={Autoregressive Estimation of High-Frequency Components in DCT Image Coding},
  author={Koichi Fukuda and Akira Kawanaka},
  journal={J. Visual Communication and Image Representation},
Abstract As the capacity of communication networks grows larger and the speed of data processing increases, various coding methods for handling digital images conveniently are being developed. The DCT-based standard coding method generally achieves good compression performance. However, for images containing sharp edges, a high compression ratio causes degradation of the reconstructed edges. In this paper, we propose a method for estimating the high-frequency components from the lower frequency… CONTINUE READING