Data Loss in the Depth Map
Symptom
Part of the acquired point cloud is missing, and the Data Loss Areas in the Depth Map tool has detected data loss areas in the depth map.
Possible Causes
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Intense ambient light, specular reflection, or improper exposure settings cause overexposed areas in the depth map.
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Dim ambient light, specular reflection, or improper exposure settings cause underexposed areas in the depth map.
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Specular reflection, acquisition angles, or workpiece positions cause other data loss areas in the depth map.
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The ROI or depth range settings cause areas outside the ROI or depth range to appear in the depth map.
Solutions
To troubleshoot different types of data loss areas detected by the "depth map data loss areas" tool, refer to the corresponding solutions.
Overexposed Areas
Try the following solutions:
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Refer to Point Cloud Loss Caused by Intense Ambient Light, use a light shielding device to cover the light source, or adjust the 3D parameters according to the following methods:
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Decrease the 3D exposure time.
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Decrease the camera gain.
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Reduce the laser intensity of the laser camera or the projection brightness of other camera projectors.
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Use the HDR function (if supported by the camera) to add an additional set of shorter exposure time.
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Refer to Point Cloud Loss Caused by Specular Reflection, check if the specular reflection results in overexposed areas and solve the issue.
Underexposed Areas
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Areas outside the camera’s projection range may also exhibit underexposure, which is normal. |
Try the following solutions:
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Increase the ambient light brightness appropriately.
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Adjust the 3D parameters as follows:
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Increase the 3D exposure time.
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Increase the camera gain.
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Increase the laser intensity of the laser camera or the projection brightness of other camera projectors.
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Use the HDR function (if supported by the camera) to add an additional set of longer exposure time.
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Decrease the stripe contrast threshold (if supported by the camera).
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Adjust the angle between the camera and the workpiece.
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Refer to Point Cloud Loss Caused by Specular Reflection, check if the specular reflection results in underexposed areas and solve the issue.
Other Data Loss Areas
Try the following solutions:
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Refer to Point Cloud Loss Caused by Specular Reflection, check if the specular reflection results in other data loss areas and solve the issue.
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Refer to Point Cloud Loss Caused by Interreflection, check if interreflection results in other data loss areas and solve the issue.
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Adjust the angle between the camera and the workpiece to reduce interreflection.