An adaptive 3-D discrete cosine transform coder for medical image compression

Shen Chuan Tai, Yung Gi Wu, Chang Wei Lin

研究成果: Article同行評審

48 引文 斯高帕斯(Scopus)

摘要

In this communication, a new three-dimensional (3-D) discrete cosine transform (DCT) coder for medical images is presented. In the proposed method, a segmentation technique based on the local energy magnitude is used to segment subblocks of the image into different energy levels. Then, those subblocks with the same energy level are gathered to form a 3-D cuboid. Finally, 3-D DCT is employed to compress the 3-D cuboid individually. Simulation results show that the reconstructed images achieve a bit rate lower than 0.25 bit per pixel even when the compression ratios are higher than 35. As compared with the results by JPEG and other strategies, it is found that the proposed method achieves better qualities of decoded images than by JPEG and the other strategies. Index Terms-Discrete cosine transform (DCT), medical image compression, segmentation, 3-D DCT.

原文English
頁(從 - 到)259-263
頁數5
期刊IEEE Transactions on Information Technology in Biomedicine
4
發行號3
DOIs
出版狀態Published - 2000 9月

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 電腦科學應用
  • 電氣與電子工程

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