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    SOLVED 多相机硬触发同步,时间戳的数值是否可以直接对应

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    • E
      EtherealHorizon last edited by

      用python多进程为每个相机分别subprocess运行v4l2-ctl命令行然后读取--stream-mmap --verbose的时间戳,这个时间戳的数值在不同相机之间是一致的吗(就是说直接找时间戳最接近的即为同步帧)?还是每个相机的计时器有不同的起始点?

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      • veye_xumm
        veye_xumm @EtherealHorizon last edited by

        @etherealhorizon 请问你使用的是哪款相机?怎样触发的同步帧?

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        • E
          EtherealHorizon @veye_xumm last edited by

          @veye_xumm IMX287,使用外部的信号输入ADP-N4触发同步

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          • veye_xumm
            veye_xumm @EtherealHorizon last edited by

            @etherealhorizon 使用 v4l2-ctl --stream-mmap --verbose 时,时间戳反映了数据从相机传输到内存缓冲区的时间点。因此,它显示的是捕获帧的实际时间,是相机传输到主机的时刻。可以用时间很接近的两帧判断其为同步帧。

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              EtherealHorizon @veye_xumm last edited by

              @veye_xumm 好的,感谢

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