4 Replies Latest reply on Jul 11, 2018 5:35 AM by tiwoti

    Subpixel RMS error ~0.25 pixels after calibration (D415)

    tiwoti

      Hi there,

       

      According to the Best Known Methods for tuning the RealSense the subpixel RMS error should be lower than 0.1 (https://www.intel.com/content/dam/support/us/en/documents/emerging-technologies/intel-realsense-technology/BKMs_Tuning_R… ), measured with the Depth Quality Tool. If this subpixel RMS accuracy is not achieved a calibration is recommended with the Dynamic Calibrator.

      However, my D415 has an RMS accuracy of roughly 0.25 pixels even after calibration, when recording the recommended target, mentioned in the BKM tuning document, on a flat surface at ~50 cm distance, in an office room with fluorescent lighting.

      I've used the following software/hardware to get these values and I've tried calibrating multiple times, but the RMS accuracy stays around 0.25 pixels.

      The dimensions of the printed calibration sheet have also been verified.

       

      D415, firmware 05.09.14.00

      Intel RealSense Dynamic Calibrator v2.6.4.0 used with default settings

      Depth Quality Tool v2.13.0 used with default settings

       

      Is there anything I can do/change to increase the RMS accuracy?