• Infrared and Laser Engineering
  • Vol. 50, Issue 3, 20200252 (2021)
Na Li, Jiaxian Deng, Yani Cui, and Baodan Chen
Author Affiliations
  • School of Information and Communication Engineering, Hainan University, Haikou 570228, China
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    DOI: 10.3788/IRLA20200252 Cite this Article
    Na Li, Jiaxian Deng, Yani Cui, Baodan Chen. Infrared image clarifying and FPGA implementation based on dark channel prior[J]. Infrared and Laser Engineering, 2021, 50(3): 20200252 Copy Citation Text show less
    Comparison diagram of dark channel
    Fig. 1. Comparison diagram of dark channel
    Transmission before estimation
    Fig. 2. Transmission before estimation
    Transmission after estimation
    Fig. 3. Transmission after estimation
    Comparison image after estimate 透射率修正后图像数据比较
    Fig. 4. Comparison image after estimate 透射率修正后图像数据比较
    Timing diagram of Camera Link control signal
    Fig. 5. Timing diagram of Camera Link control signal
    Data caching diagram
    Fig. 6. Data caching diagram
    Comparison image1
    Fig. 7. Comparison image1
    Comparison image2
    Fig. 8. Comparison image2
    ParameterValue
    Minimum period/ns5.307
    Maximum frequency/MHz188.43
    Table 1. [in Chinese]
    Logic utilizationRef.[14] Ref.[15] Proposed hardware algorithm
    Slice LUTs307 of 28800 (1%)6119 of 39600 (15%)2678 of 63400 (4%)
    Block RAMs16 of 60 (26%)40%9 of 135 (6%)
    I/O cells82 of 480 (17%)*24 of 285 (8%)
    Slice registers493 of 28800 (1%)*2257 of 126800 (1%)
    Time period/ms0.90570.30.1185
    Table 2. [in Chinese]
    Image 1Image 2
    ePSNRePSNR
    Original infrared image022.7104022.6584
    He algorithm with block effect2.103120.87844.799620.3565
    Wan algorithm0.041222.54180.131822.4613
    He algorithm after soft mapping2.044921.01643.865620.4240
    Proposed software algorithm2.620322.39093.366422.6171
    Proposed hardware algorithm1.127222.11992.059222.4859
    Table 3. [in Chinese]
    Na Li, Jiaxian Deng, Yani Cui, Baodan Chen. Infrared image clarifying and FPGA implementation based on dark channel prior[J]. Infrared and Laser Engineering, 2021, 50(3): 20200252
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