What to do if the depth map is not good?

Questions

The depth map output from the camera is not good, with many noise.

Causes and Solutions

The possible causes and corresponding solutions are as follows:

  • The object being measured exceeds the measurement range or is close to the blind spot

    Confirm the camera’s measurement range and choose the appropriate camera based on the requirements, and try to avoid the camera working at the extreme distance of the measurement range.

  • Affected by ambient light

    Common indoor light sources and heat sources will not interfere with the camera, but it is necessary to avoid light sources that are in the same wavelength as the camera. Sunlight can affect the imaging effect of the camera to some extent.

  • Poor performance for the recognition of transparent objects, black objects, and highly reflective objects

    Some models of Percipio cameras can effectively recognize transparent objects, black objects, and highly reflective objects. Please contact Percipio technical support to choose the appropriate camera.

  • Camera component parameter settings are incorrect

    1. Connect the camera correctly to the host computer.

    2. Use the Percipio Viewer tool to open the left and right infrared data streams and view two infrared images.

    3. Disable the auto ctrl function under the Light Source component, and enable the left ir / right ir streams. At this point, you should be able to see the speckle pattern in the two grayscale images.

    4. Adjust the parameters according to the speckle patterns in the grayscale images:

      • If there is no speckle pattern, please check if the laser power is 0. If it is 0, increase the laser power.

      • If the speckle pattern is too bright, first reduce the laser power, then decrease the exposure time, analog gain, and gain of the left ir /right ir stream.

      • If the speckle pattern is too dark, first increase the laser power, then increase the exposure time, analog gain, and gain of the left ir /right ir stream.

      • If there is a significant difference in the brightness of the left and right ir speckle patterns, you can set the exposure time, gain, and analog gain of the left and right ir stream to the same values.