• Chinese Journal of Lasers
  • Vol. 49, Issue 20, 2007210 (2022)
Hongfei Wang1、2、3, ShiQing Ma1、2, Lei Min1、2, Shuai Wang1、2, Wei Yang5、***, Chuan Xu4、**, and Ping Yang1、2、*
Author Affiliations
  • 1Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, Sichuan, China
  • 2Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, Sichuan, China
  • 3School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 4Affiliated Cancer Hospital of University of Electronic Science and Technology of China/Sichuan Cancer Hospital, Chengdu 610209, Sichuan, China
  • 5School of Aeronautics and Astronautics Xihua University, Chengdu 610209, Sichuan, China
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    DOI: 10.3788/CJL202249.2007210 Cite this Article Set citation alerts
    Hongfei Wang, ShiQing Ma, Lei Min, Shuai Wang, Wei Yang, Chuan Xu, Ping Yang. Lung CT Image Enhancement Based on Image Segmentation and Total Variational[J]. Chinese Journal of Lasers, 2022, 49(20): 2007210 Copy Citation Text show less
    Twice wavelet transformation of image
    Fig. 1. Twice wavelet transformation of image
    Flowchart of proposed algorithm
    Fig. 2. Flowchart of proposed algorithm
    Experimental results for suppressing artifacts by different algorithms. (a) Original image screenshot; (b) WTHE algorithm; (c) GAAHE algorithm; (d) CLAHE algorithm; (e) KH-RHE algorithm; (f) proposed algorithm
    Fig. 3. Experimental results for suppressing artifacts by different algorithms. (a) Original image screenshot; (b) WTHE algorithm; (c) GAAHE algorithm; (d) CLAHE algorithm; (e) KH-RHE algorithm; (f) proposed algorithm
    Experimental results of proposed algorithm and comparison algorithms on test data sets
    Fig. 4. Experimental results of proposed algorithm and comparison algorithms on test data sets
    AlgorithmContrastGray level resolutionStructural similarityAbsolute mean brightness difference
    Original37.210.95
    WTHE35.220.890.9211.19
    GAAHE36.350.960.9311.02
    CLAHE36.470.970.9212.39
    KH-RHE37.380.980.9610.92
    Proposed38.841.000.9610.81
    Table 1. Average value of objective evaluation indices
    Hongfei Wang, ShiQing Ma, Lei Min, Shuai Wang, Wei Yang, Chuan Xu, Ping Yang. Lung CT Image Enhancement Based on Image Segmentation and Total Variational[J]. Chinese Journal of Lasers, 2022, 49(20): 2007210
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