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Question about voxl-dfs-server.conf and voxl-tflite-server.conf

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m500
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  • yu zhangY Offline
    yu zhangY Offline
    yu zhang
    Regular
    wrote on last edited by
    #1

    Hi team,
    I saw there was a skip_n_frames parameter available in both voxl-dfs-server.conf and voxl-tflite-server.conf. I am wondering if the usage of this one is to reduce resource cost or runtime latency for processing OpenCV libs or TensorFlow lite models? If skip_n_frames is 0, all frames will be used to feed to the libs, right?

    Also, I am wondering what's the meaning of dt(ms) in the voxl-inspect-gps? Does it mean the internal GPS refresh rate?

    Since m500 has 3 IMU sensors, it seems only imu0 with a default 1K rate is used in the voxl-qvio-server.conf. What if I change the it to imu1, will the performance of VIO be impacted?

    Thanks.

    yu zhangY 1 Reply Last reply
    0
    • yu zhangY yu zhang

      Hi team,
      I saw there was a skip_n_frames parameter available in both voxl-dfs-server.conf and voxl-tflite-server.conf. I am wondering if the usage of this one is to reduce resource cost or runtime latency for processing OpenCV libs or TensorFlow lite models? If skip_n_frames is 0, all frames will be used to feed to the libs, right?

      Also, I am wondering what's the meaning of dt(ms) in the voxl-inspect-gps? Does it mean the internal GPS refresh rate?

      Since m500 has 3 IMU sensors, it seems only imu0 with a default 1K rate is used in the voxl-qvio-server.conf. What if I change the it to imu1, will the performance of VIO be impacted?

      Thanks.

      yu zhangY Offline
      yu zhangY Offline
      yu zhang
      Regular
      wrote on last edited by
      #2

      Hey @Alex-Gardner, can you please advise about this question? Thanks.

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      • ? Offline
        ? Offline
        A Former User
        wrote on last edited by
        #3

        Yes, the skip_n_frames is used for the CPU-intensive algorithms that can't run at full 30hz. Setting it to 0 will try to process all of the frames.

        dt(ms) is the time delta in milliseconds between gps samples.

        We've tested the imus a lot and the most reliable one is imu0, you'll probably see vio's performance drop if you use imu1.

        yu zhangY 1 Reply Last reply
        0
        • ? A Former User

          Yes, the skip_n_frames is used for the CPU-intensive algorithms that can't run at full 30hz. Setting it to 0 will try to process all of the frames.

          dt(ms) is the time delta in milliseconds between gps samples.

          We've tested the imus a lot and the most reliable one is imu0, you'll probably see vio's performance drop if you use imu1.

          yu zhangY Offline
          yu zhangY Offline
          yu zhang
          Regular
          wrote on last edited by
          #4

          @Alex-Gardner All right, thanks so much for that 😉

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