A simple but effective denoising algorithm in projection domain of CBCT

Shaojie Chang, Yanbo Zhang, Ti Bai, Xi Chen, Qiong Xu, Xuanqin Mou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


There are growing concerns on the potential side effect of radiation, which could be decreased by lowering the tube current. However, this manner will lead to a degraded image since X-ray imaging is a quantum accumulation process. Great efforts have been devoted to alleviate this problem. In this paper, a simple Wiener filter was employed to denoise projection data in detector domain. And then an enhancement filter was exploited to strengthen small structures. As a consequence, this combination leaded to a reconstruction with good trade-off between noise and resolution. For the purpose of comparison, block-matching and 3D/4D denoising algorithm (BM3D/BM4D) were also adopted to denoise the projections. Experimental results demonstrated that the proposed algorithm could deliver a reconstruction with comparable quality as BM4D algorithm while better than that of BM3D denoising algorithm. Note that the propose algorithm has a much higher computation efficiency than BM3D/BM4D, and hence provides an insight into the clinical utility where real time is of high importance.

Original languageEnglish (US)
Title of host publicationImage and Graphics - 8th International Conference, ICIG 2015, Proceedings
EditorsYu-Jin Zhang
PublisherSpringer Verlag
Number of pages8
ISBN (Print)9783319219776
StatePublished - 2015
Externally publishedYes
Event8th International Conference on Image and Graphics, ICIG 2015 - Tianjin, China
Duration: Aug 13 2015Aug 16 2015

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference8th International Conference on Image and Graphics, ICIG 2015


  • BM3D
  • BM4D
  • CBCT
  • Image enhancement
  • Noise reduction
  • Wiener filter

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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