Noise estimation for blocking artifacts reduction in DCT coded images

@article{Yang2000NoiseEF,
  title={Noise estimation for blocking artifacts reduction in DCT coded images},
  author={Jeonghun Yang and Hyuk Choi and Taejeong Kim},
  journal={IEEE Trans. Circuits Syst. Video Techn.},
  year={2000},
  volume={10},
  pages={1116-1120}
}
This paper proposes a postprocessing algorithm that can reduce the blocking artifacts in discrete cosine transform (DCT) coded images. To analyze blocking artifacts as noise components residing across two neighboring blocks, we use 1-D pixel vectors made of pixel rows or columns across two neighboring blocks. We model the blocky noise 1 in each pixel vector as a shape vector weighted by the boundary discontinuity. Boundary discontinuity of each vector is estimated from the difference between… CONTINUE READING
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