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    Journals >Laser & Optoelectronics Progress >Volume 56 >Issue 15 >Page 151203 > Article
    • Laser & Optoelectronics Progress
    • Vol. 56, Issue 15, 151203 (2019)
    Quantization Error Restraining of Virtual Structured-Light Three-Dimensional Data Compression Algorithm
    Yingchun Wu1, Yiping Cao2、*, Congjian Ji1, Anhong Wang1, and Xianling Zhao1
    Author Affiliations
  • 1 School of Electronic and Information Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 0 30024, China
  • 2 School of Electronics and Information Engineering, Sichuan University, Chengdu, Sichuan 610064, China
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    DOI: 10.3788/LOP56.151203 Cite this Article Set citation alerts
    Yingchun Wu, Yiping Cao, Congjian Ji, Anhong Wang, Xianling Zhao. Quantization Error Restraining of Virtual Structured-Light Three-Dimensional Data Compression Algorithm[J]. Laser & Optoelectronics Progress, 2019, 56(15): 151203 Copy Citation Text show less
    Comparison of relative and absolute phase unwrapping. (a) Principles of absolute and relative phase unwrapping; (b) relative and absolute phase unwrapping results
    Fig. 1. Comparison of relative and absolute phase unwrapping. (a) Principles of absolute and relative phase unwrapping; (b) relative and absolute phase unwrapping results
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    Improved data decoding
    Fig. 2. Improved data decoding
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    3D point cloud distribution of mask
    Fig. 3. 3D point cloud distribution of mask
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    2D images after encoded. (a) Fringe pattern of channel R; (b) fringe pattern of channel G; (c) fringe pattern of channel B
    Fig. 4. 2D images after encoded. (a) Fringe pattern of channel R; (b) fringe pattern of channel G; (c) fringe pattern of channel B
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    Decoding results of traditional method
    Fig. 5. Decoding results of traditional method
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    Data changing in channel B. (a) Raw data of channel B; (b) data with quantization error after suppression and storage
    Fig. 6. Data changing in channel B. (a) Raw data of channel B; (b) data with quantization error after suppression and storage
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    Phase unwrapping results. (a) Relative phase unwrapping results; (b) absolute phase unwrapping results; (c) corrected results
    Fig. 7. Phase unwrapping results. (a) Relative phase unwrapping results; (b) absolute phase unwrapping results; (c) corrected results
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    New decoded data of 3D point cloud
    Fig. 8. New decoded data of 3D point cloud
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    3D point cloud data distribution. (a) Mask; (b) mickey; (c) statue; (d) ball abutment; (e) cone abutment; (f) hemisphere
    Fig. 9. 3D point cloud data distribution. (a) Mask; (b) mickey; (c) statue; (d) ball abutment; (e) cone abutment; (f) hemisphere
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    Comparisons of decoding results of two methods when compression ratio is 1∶48.3. (a) 3D data to be encoded; (b) decoding results of proposed method; (c) decoding results of method in Ref. [13]; (d) error distribution of proposed method; (e) error distribution of method in Ref. [13]
    Fig. 10. Comparisons of decoding results of two methods when compression ratio is 1∶48.3. (a) 3D data to be encoded; (b) decoding results of proposed method; (c) decoding results of method in Ref. [13]; (d) error distribution of proposed method; (e) error distribution of method in Ref. [13]
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    Comparisons of decoding results of two methods when compression ratio is 1∶70.7. (a) 3D data to be encoded; (b) decoding results of proposed method; (c) decoding result of method in Ref. [13]; (d) error distribution of proposed method; (e) error distribution of method in Ref. [13]
    Fig. 11. Comparisons of decoding results of two methods when compression ratio is 1∶70.7. (a) 3D data to be encoded; (b) decoding results of proposed method; (c) decoding result of method in Ref. [13]; (d) error distribution of proposed method; (e) error distribution of method in Ref. [13]
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    Decoding methodMaskMickeyStatueBall abutmentCone abutmentHemisphere
    Traditional method40.404754.444838.351547.410647.018645.7326
    After quantization error suppression63.834481.822256.133060.065066.591559.4934
    Table 1. PSNR comparisons of two decoding methods
    Decoding methodMaskMickeyStatueBall abutmentCone abutmentHemisphere
    Traditional method2.43390.60863.08291.08641.13661.3180
    After quantization error suppression0.16400.02070.39800.25310.11940.2703
    Table 2. RMSE comparisons of two decoding methods
    Quantization errorrestraining methodCompressionratio: 1∶48.3Compressionratio: 1∶70.7
    Proposed method0.02140.0289
    Ref. [13] method0.02350.0323
    Table 3. Decoding accuracy comparisons of two methods (RMSE)
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    Yingchun Wu, Yiping Cao, Congjian Ji, Anhong Wang, Xianling Zhao. Quantization Error Restraining of Virtual Structured-Light Three-Dimensional Data Compression Algorithm[J]. Laser & Optoelectronics Progress, 2019, 56(15): 151203
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