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DPCM coding of images presented in a pruned quadtree form

DPCM coding of images presented in a pruned quadtree form

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© IEE
Published

A new efficient method, based on a differential PCM technique, for encoding the leaves of a pruned quadtree is presented. Solutions to the problems of causality maintenance during tree scanning-encoding and of fast neighbour finding are described. The result is a constant wordlength code with a remarkable rate–distortion performance.

Inspec keywords: differential pulse code modulation; data compression; trees (mathematics); image coding

Other keywords: rate-distortion performance; differential PCM technique; causality maintenance; constant wordlength code; fast neighbour finding; pruned quadtree form; DPCM coding; tree scanning-encoding

Subjects: Pattern recognition; Optical information, image and video signal processing; Codes; Information theory

References

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      • H. Samet . The quadtree and related hierarchical data structures. ACM Comput. Surv. , 187 - 260
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      • F. DeCoulon , U. Johnsen . Adaptive block schemes for source coding of black-and-white facsimile. Electron. Lett. , 61 - 62
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      • E.M. Blain , R.T. Fischer . A comparison of VQ techniques. EURASIP Image Commun. , 1
    4. 4)
      • A.K. Jain . Image data compression: A review. Proc. IEEE , 349 - 389
    5. 5)
      • E. Shusterman , M. Feder . Image compression via improved quadtree decomposition algorithms. IEEE Trans. Image Process. , 207 - 215
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