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Parameter Adjustment

1. What information do I need to confirm before capturing?

Device information, software version, camera calibration information, test scene and ambient light, sample type, scanner position, etc.

2. The 2D image is very dark, the point cloud is dark, and the features cannot be seen.

This is usually caused by 2D underexposure. Increase Exposure2D or Gain2D, and check "Yes" to the "ProjectorEnable2D" option. If the 2D image is still dark, you may need to add an external light source as the fill light.

3. The 2D image is too bright and the point clouds are light in color, making bright features difficult to see.

This is usually caused by 2D overexposure, the Exposure2D or Gain2D can be reduced.

4. A light spot appear in the 2D image (see figure), affecting recognition.

LightSpot

(1) Check the scene to see if there is a light source shining directly at the object, and adjust the position of the light source or the object.

(2) It may be caused by light machine projection. Select "No" for the "ProjectorEnable2D" option, and decrease Exposure2D, Gain2D and Brightness.

5. The light portion of the captured point cloud is intact and the dark-colored portion is missing.

This is usually caused by 3D underexposure.

(1) Check if Brightness is set to the maximum value. If not, increase Brightness.

(2) If Brightness is already at the maximum value, try to increase Exposure3D and Gain3D to improve the data integrity of the dark part.

6. The dark portion of the captured point cloud is complete and the light portion is missing.

This is usually caused by 3D overexposure of the light portion. Decrease Exposure3D, Gain3D and Brightness to improve the data integrity of the light portions.

7. The object is made of highly reflective material, and point clouds are missing in the reflective areas.

(1) Decrease Brightness or use HDR function.

(2) If there is no improvement after adjusting Brightness and using HDR function, adjust the scanner capturing angle or the position of the object to reduce the reflection.

8. The color and material of the objects are very different, and the point cloud of light, dark, and reflective areas cannot be displayed completely.

In this case, a single exposure cannot capture the complete point cloud, so you need to use the HDR function, which can set 2~3 exposures corresponding to different colors and materials, and then synthesize the data to get the complete point cloud.

9. The color of point cloud and 2D image is distorted.

(1) Check whether the parameter Gamma2D is set. If yes, reset to the default value of 1.

(2) If the scanner uses color cameras, correct the color with Device Functions → Auto White Balance.

10. The point cloud captured by the scanner has a lot of noise, how to remove it?

(1) Check whether the scanner is used within the working distance, adjust the scanner to the appropriate working distance.

(2) You can use the functions of Confidence Denoising, Clustering Denoising, and Edge Denoising in the Post-processing Parameters to remove the noise, and you can also use the functions of Z-Truncate to quickly crop the flying noise.

11. The point cloud has a large area missing.

(1) Check whether the point cloud display range is set. You can open the pop-up window in "Setting: Point Cloud Range" to modify the value and adjust the point cloud display range to match the current window display.

(2) Check whether the scanner is in the appropriate working range, you can check the working distance of the device in the Device Management pop-up window or "Device Info" in the left column of the main interface. If the scanner is not in the working distance, you need to adjust the scanner position.

(3) Check whether there is strong direct light on the site. If there is, please lower the light.

(4) Check whether the parameter Light Contrast is set too large and whether the denoising parameters are set too high. Adjust the parameters and capture again.

12. When capturing in Dual Camera Mode, the point cloud appears hollow.

(1) Check whether the scanner is in the working distance and whether there is a highly reflective area in the sample.

(2) Adjust the parameter Light Contrast and reduce the Edge Denoising level to improve the point cloud quality.

(3) Contact technical support for remote debugging.

13. When capturing highly reflective objects in Swing Line Scan Mode, how to adjust the parameters to get a more complete point cloud?

(1) According to the point cloud imaging effect, appropriately reduce the Single Exposure Time and Brightness to prevent overexposure due to reflections.

(2) Check whether the default denoising parameters are appropriate. If there are hollows in the point cloud, you can increase the Clustering Distance and reduce the Clustering Points.

(3) Adjust the scanner capturing angle to avoid aiming directly at the object surface. Capturing squarely will make the main reflection direction of the laser point directly to the camera, resulting in strong overexposure. The correct practice is to capture high reflection objects obliquely, so that the main reflection direction of the laser points to other positions to avoid overexposure.

HighReflection

14. When capturing objects with multiple reflective surfaces in Swing Line Scan Mode, how to adjust the parameters to get a more complete point cloud?

(1) According to the point cloud imaging effect, appropriately reduce the Single Exposure Time and Brightness to prevent overexposure due to reflections.

(2) Check whether the default denoising parameters are appropriate. If there are hollows in the point cloud, you can increase the Clustering Distance and reduce the Clustering Points.

(3) Adjust the scanner capturing angle. When there are missing points in the point cloud, try rotating the scanner 90° so that the laser line is scanning in the other direction and you may get a more complete point cloud.

15. When capturing in strong ambient light scenes with Swing Line Scan Mode, how to adjust the parameters to get a more complete point cloud?

(1) For normal daylight scenes, the RVC-M series can be used with default parameters for complete imaging.

(2) The signal-to-noise ratio can be improved by adjusting the Single Exposure Time and maximizing the projection brightness.