Journal of Applied Optics, Volume. 44, Issue 3, 469(2023)

Monocular visual positioning system with characteristic distortion based on embedded GPU

Zepeng CHEN1... Wenyong LI3, Zijian LAO1, Yu CHEN1, Jiaoyang LI1, Jiahui WANG1, and Min ZHENG12,* |Show fewer author(s)
Author Affiliations
  • 1School of Physics, Sun Yat-Sen University, Guangzhou 510275, China
  • 2School of Basic Education, Lingnan Normal University, Zhanjiang 524084, China
  • 3School of Electronics and Information Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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    Figures & Tables(12)
    Ring encoded pattern and schematic diagram of decoding (number 1 to 4 refers to position of camera)
    Schematic diagram of decoding
    NVIDIA Jetson TX2 and its loading board
    Flow chart of system
    System construction
    Effect diagram of system operation (position/cm: absolute coordinates of camera)
    Heat distribution diagram of absolute errors
    • Table 1. Code type and camera orientation mapping

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      Table 1. Code type and camera orientation mapping

      圆环数二进制码中心绝对坐标/cm相机朝向
      2010(100,100)
      0101(100,100)
      101(100,100)西
      1010(100,100)
      301010(200,200)
      010101(200,200)
      10101(200,200)西
      101010(200,200)
    • Table 2. Embedded device parameters

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      Table 2. Embedded device parameters

      系统环境软件环境硬件环境
      *运存与显存共用,容量为8 G,外存容量30 G。
      Ubuntu 16.04Python 3.5.2NVIDIA Jetson TX2模块*
      OpenCV 3.4.4瑞泰RTSO-9001载板
      CUDA-9.0罗技C270摄像机,300万像素
    • Table 3. Experimental host parameters

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      Table 3. Experimental host parameters

      系统环境硬件环境
      Ubuntu 18.04GPU:Nvidia GTX1080Ti,10 G显存
      CPU:Intel(R) Core(TM) i7-7700 CPU @ 3.60 GHz
      32 G RAM内存
    • Table 4. Average running time of each modulems

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      Table 4. Average running time of each modulems

      模块电脑主机TX2
      YOLO35280
      椭圆拟合16
      预测坐标815
      解码19
      合计45310
    • Table 5. Measuring errorscm

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      Table 5. Measuring errorscm

      参数平均误差标准差误差最大值
      坐标x0.310.281.57
      坐标y0.520.512.91
      距离 (x2+y2)0.550.533.31
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    Zepeng CHEN, Wenyong LI, Zijian LAO, Yu CHEN, Jiaoyang LI, Jiahui WANG, Min ZHENG. Monocular visual positioning system with characteristic distortion based on embedded GPU[J]. Journal of Applied Optics, 2023, 44(3): 469

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    Paper Information

    Category: Research Articles

    Received: Jun. 1, 2022

    Accepted: --

    Published Online: Jun. 19, 2023

    The Author Email: ZHENG Min (zjzhengmin@126.com)

    DOI:10.5768/JAO202344.0301001

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