Preview Mode

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This topic provides descriptions of the parameters in the scan mode.

1. Brightness Settings

Parameters in this category affect the brightness of the laser lines in the raw image, thus affecting the quality of the profile, intensity image, and depth map.

  • The grayscale values of the pixels at the center of the laser lines should be between 200 and 255.

  • The recommended order of adjusting parameters is: Exposure Time > Laser Power > Analog Gain > Digital Gain

1.1. Exposure Mode

Description

Select the exposure mode for acquiring the raw image based on the color and texture of the target object.

Visibility

Beginner, Expert

Values

  • Timed (default): suitable for target objects of a single texture or color.

  • Single-frame HDR: Suitable for target objects with some reflective areas or brightness variations.

  • Dual-frame HDR: Suitable for target objects that contain both highly reflective regions and dark regions, with a wide brightness range.

Instruction

After selecting different options, different parameters are displayed in the Brightness Settings category for adjustment:

1.2. Timed: Exposure Time

Description

Set the exposure time for acquiring the raw image. Exposure time affects the brightness and width of the laser lines in the raw image, as well as the max scan rate of the laser profiler.

Longer exposure time results in brighter and wider laser lines and lower max scan rate. Shorter exposure time results in darker and narrower laser lines and higher max scan rate.

Visibility

Beginner, Expert

Values

  • Manual: Enter the exposure time manually.

  • Recommended: Generate a recommended exposure time automatically based on the set conditions, which can be used as the initial value for parameter adjustment. Before clicking Recommended, you need to set the laser line region and exposure time range used to calculate the recommended values. For details, refer to Exposure Time Recommendation Settings.

  • Value range: 5 to 600000 μs.

  • Default value: 30 μs.

Instruction

  • Shorter exposure time is suitable for objects that are reflective or light-colored; longer exposure time is suitable for objects that are non-reflective or dark-colored.

  • The grayscale values of the pixels at the center of the laser lines should be between 200 and 255.

    Generally, when the grayscale of the middle one or two rows of pixels is 255, the brightness of the raw image is good. After the Exposure information toggle switch is turned on, pixels with a grayscale value of 255 are displayed in red. For details, refer to Profile Extraction Aid.

  • If the laser lines are too dark, increase Exposure Time; If the laser lines are too bright or wide, decrease Exposure Time.

  • If Exposure Time has reached its maximum value, but the laser lines are still too dark, increase Analog Gain.

  • If Exposure Time has reached its minimum value, but the laser lines are still too bright, decrease Laser Power.

  • If you need to increase the max scan rate, decrease the Exposure Time appropriately.

Raw images obtained with different Exposure Time values (all other conditions identical):

Exposure time: 5 μs

exposure time 5 integrated

Exposure time: 40 μs

exposure time 40 integrated

Exposure time: 400 μs

exposure time 400 integrated

1.2.1. Exposure Time Recommendation Settings

In the fixed mode, after clicking Recommended to the right of Exposure Time, the recommended exposure time will be automatically generated according to the set conditions.

Please set the laser line region and exposure time range used to calculate the recommended values before use. Please follow these steps:

  1. Click Edit to the right of Exposure Time to open the Exposure Time Recommendation Settings window.

  2. Sets the Laser Line ROI: Drag the dashed line in the raw image display area on the left or input the percentage values of the Left Boundary and the Right Boundary to determine the laser line ROI used to calculate the recommended exposure time.

  3. Sets the Exposure Time Range: Sets the Max Exposure Time and Min Exposure Time. Maximum exposure time should ensure that the scan rate at this exposure time meets requirements, and minimum exposure time should ensure that the data quality at this exposure time meets requirements.

  4. Click Apply to complete the settings.

1.3. Single Frame HDR: Exposure Time and HDR Exposure Settings

1.3.1. Exposure Time

Description

Set the exposure time for acquiring the raw image. Exposure time affects the brightness and width of the laser lines in the raw image, as well as the max scan rate of the laser profiler.

Longer exposure time results in brighter and wider laser lines and lower max scan rate. Shorter exposure time results in darker and narrower laser lines and higher max scan rate.

Visibility

Beginner, Expert

Values

  • Value range: 10 to 600000 μs

  • Default value: 100 μs

Instruction

  • Shorter exposure time is suitable for objects that are reflective or light-colored; longer exposure time is suitable for objects that are non-reflective or dark-colored.

  • The grayscale values of the pixels at the center of the laser lines should be between 200 and 255.

    Generally, when the grayscale values of the middle one or two rows of pixels are 255, the brightness of the raw image is good. After the Exposure information toggle switch is turned on, pixels with a grayscale value of 255 are displayed in red. For details, refer to Profile Extraction Aid.

  • It is recommended to Adjust HDR Exposure Settings below to complete the initial parameter configuration.

  • If the laser lines are too dark, increase Exposure Time; If the laser lines are too bright or wide, decrease Exposure Time.

  • To enhance the max scan rate, decrease Exposure Time and increase Analog Gain.

  • If Exposure Time has reached its maximum value, but the laser lines are still too dark, increase Analog Gain.

  • If Exposure Time has reached its minimum value, but the laser lines are still too bright, decrease Laser Power.

1.3.2. HDR Exposure Settings

Description

Set the exposure time for acquiring the raw image. Exposure time affects the brightness and width of the laser lines in the raw image, as well as the max scan rate of the laser profiler.

Longer exposure time results in brighter and wider laser lines and lower max scan rate. Shorter exposure time results in darker and narrower laser lines and higher max scan rate.

Visibility

Beginner, Expert

Values

You can select Settings 1 to Settings 9, or you can set Exposure Time 1 and Exposure Time 2 Manually in HDR Exposure Settings.

When selecting Manual:

  • Range of value:

    • Total exposure time: 10 to 600000 μs

    • Exposure time 1: 10 to 600000 μs; Exposure time 2: 0 to 599990 μs

Instruction

For detailed instructions, refer to Adjust HDR Exposure Settings below.

  • The grayscale values of the pixels at the center of the laser lines should be between 200 and 255.

    Generally, when the grayscale values of the middle one or two rows of pixels are 255, the brightness of the raw image is good. After the Exposure information toggle switch is turned on, pixels with a grayscale value of 255 are displayed in red. For details, refer to Profile Extraction Aid.

  • If the laser lines are too dark, increase Total exposure time; If the laser lines are too bright or wide, decrease Total exposure time.

  • To enhance the max scan rate, decrease Total exposure time and increase Analog Gain.

  • If Total exposure time has reached its maximum value, but the laser lines are still too dark, increase Analog Gain.

  • If Total Exposure Time has reached its minimum value, but the laser lines are still too bright, decrease Laser Power.
Adjust HDR Exposure Settings

In the single-frame HDR exposure mode, each exposure is divided into two phases to ensure that, in the raw image, laser lines reflected by regions of different textures or colors can all achieve appropriate brightness.

In the single-frame HDR exposure mode, the total exposure time is determined by using the timed exposure mode.

Follow these steps to adjust the HDR exposure settings:

  1. In the preview mode, find the region with the most complex textures or colors on the target object surface and acquire data.

  2. Set Exposure Mode to Timed and adjust Exposure Time, until the brightness of the laser line reflected by the region least likely to overexpose on the target object meets the requirement. The value of Exposure Time when the brightness of this laser line meets the requirement is the value that should be set for Total exposure time in HDR Exposure Settings.

  3. Set Exposure Mode to Single-frame HDR, and enter the exposure time determined in step 2 in Exposure Time.

  4. Select a preset value in the drop-down list of HDR Exposure Settings.

  5. In the preview mode, acquire data again and check the brightness of the laser lines in the raw image.

    • If the brightness of the laser lines meets the requirement, the process is completed.

    • If the brightness of the laser lines does not meet the requirements, select other preset values.

      If the brightness of the laser lines still does not meet the requirements, follow these steps.

  6. Set Exposure Mode to Timed and adjust Exposure Time, until the laser line reflected by the region most likely to overexpose on the target object is just visible in the raw image. The current value of Exposure Time is the value that should be set for Exposure time 2 in HDR Exposure Settings.

  7. Set Exposure Mode to Single-frame HDR, then set HDR Exposure Settings to Manual. Click Edit to the right of HDR Exposure Settings to open the HDR Exposure Settings window.

  8. Adjust Expected proportions until the value of Exposure time 2 roughly matches the exposure time determined in step 6.

    • The exposure times of the two phases should satisfy: Exposure time 1 > Exposure time 2.

      If the exposure time does not satisfy the above condition after completing Step 8, click the Auto reorder button or continue adjusting the Expected proportions until the Proportion check shows OK.

    • The exposure time for each phase must be an even number. If the calculated values do not meet these requirements, the software will automatically fine-tune them.

  9. Click Apply to close the current window. In the preview mode, acquire data again and check the brightness of the laser lines in the raw image.

    • If the brightness of the laser lines meets the requirement, the process is completed.

    • If the laser lines still have overexposed parts, please try the following solutions:

      • Increase the proportion of Exposure time 1 slightly or decrease the proportion of Exposure time 2 slightly.

      • Increase the Suppression level in HDR Overexposure Suppression.

1.4. Dual-frame HDR: Exposure Time, Exposure Time 2, and Long Exposure Weight

1.4.1. Exposure Time

Description

Set the exposure time for acquiring the raw image. Exposure time affects the brightness and width of the laser lines in the raw image, as well as the max scan rate of the laser profiler.

Longer exposure time results in brighter and wider laser lines and lower max scan rate. Shorter exposure time results in darker and narrower laser lines and higher max scan rate.

When Exposure Mode is set to Dual-frame HDR, two frames are acquired. This parameter is the exposure time of the first frame (Long exposure frame).

Visibility

Beginner, Expert

Values

  • Value range: 5 to 600000 μs

  • Default value: 40 μs

Instruction

  • If the dark laser lines are too dark or discontinuous, increase Exposure Time appropriately.

  • If the highlighted area is significantly overexposed, you can decrease Exposure Time appropriately and adjust Exposure Time 2 and Long Exposure Weight together.

1.4.2. Exposure Time 2

Description

Set the exposure time of the second frame (short exposure frame) in the dual-frame HDR.

This frame is used to suppress the overexposure caused by the exposure of the first long frame in the bright region, and restore the visibility of the laser lines in the bright region in the raw image, thus improving the stability of profile extraction.

Visibility

Beginner, Expert

Values

  • Value range: 5 to 600000 μs

  • Default value: 40 μs

The set value of Exposure Time 2 must be less than or equal to Exposure Time.

Instruction

  • When the overexposure of the highlighted region is significant, decrease Exposure Time 2 appropriately, or enable Laser Power 2 to reduce the laser power of the short exposure frame.

  • When there are not enough dark details, you can adjust the Exposure Time and Long Exposure Weight parameters together.

1.4.3. Long Exposure Weight

Description

Sets the weight ratio of the long exposure frame in the Dual-frame HDR fusion result. A higher value means a higher contribution of the long exposure frame in the fused result.

The fused result is generated by combining the long exposure frame and the short exposure frame using the configured weights:

  • A higher weight gives more weight to the long exposure frame, usually providing richer dark-region details but with a higher risk of overexposure in bright regions.

  • A lower weight gives more weight to the short exposure frame, usually reducing overexposure in bright regions but potentially reducing dark-region details.

Visibility

Expert

Values

  • 0%

  • 25%

  • 50% (default)

  • 75%

  • 100%

Instruction

  • When there are not enough dark details, you can appropriately increase Long Exposure Weight.

  • When the highlighted area is significantly overexposed, you can decrease Long Exposure Weight appropriately.

1.5. Analog Gain

Description

Increasing this parameter can enhance the brightness of the raw image. However, noise will also be amplified.

Visibility

Beginner, Expert

Values

  • 1× (default)

  • 2×

  • 3×

  • 4×

Instruction

  • To enhance the max scan rate, decrease Exposure Time and increase Analog Gain.

  • If both Exposure Time and Laser Power Value have reached its maximum value, but the laser lines are still too dark, you can increase Analog Gain.

  • If Analog Gain has reached its maximum value, but the laser lines are still too dark, you can increase Digital Gain.

The effect of HDR is weakened when the value of Analog Gain is equal to or exceeds 3×.

Raw images acquired with different Analog Gain values (all other conditions identical):

Analog Gain: 1×

analog gain 1x

Analog Gain: 4×

analog gain 4x

1.6. Digital Gain

Description

Increasing this parameter can enhance the brightness of the raw image. However, noise will also be amplified.

Compared with Analog Gain, Digital Gain amplifies noise more noticeably. Digital Gain should only be adjusted when Analog Gain has reached its maximum value, but the laser lines are still too dark.

Visibility

Expert

Values

  • Value range: 1 to 32

  • Default value: 1

Instruction

If Analog Gain has reached its maximum value, but the laser lines are still too dark, you can increase Digital Gain.

Raw images acquired with different Digital Gain values (all other conditions identical):

Digital Gain: 1

digital gain 1 integrated

Digital Gain: 5

digital gain 5 integrated

1.7. Laser Control

The parameters that can be adjusted in the Laser Control category differ under different Exposure Modes.

Exposure Mode Adjustable Parameters

Timed

Laser Power Adjustment Mode, Laser Power Value, Laser Power Adjustment Rate, Laser Operation Mode

Single-frame HDR

Laser Power Value, Laser Operation Mode

Dual-frame HDR

Laser Power Value, Laser Power 2, Laser Operation Mode

1.7.1. Laser Power Adjustment Mode

Parameter Description

Set the mode for adjusting the laser intensity.

Visibility

Beginner, Expert

Values

  • Auto

  • Manual

Instruction

  • Auto: Click Edit to open the Laser Power Recommendation Settings window. After setting the ROI for the laser line and the laser power range, this value is automatically recommended. For details, refer to Laser Power Recommendation Settings.

  • Manual: Set the laser power value manually.

The Dynamic Optimization function in the scan mode is unavailable h Auto.
Laser Power Recommendation Settings

Once the Laser Power Adjustment Mode is set to Auto, you can generate the recommended values of laser power with the Laser Power Recommendation Settings tool.

Please set the Laser Line Region and Laser Power Range used to calculate the recommended values before use. Please follow these steps:

  1. Click Edit to the right of Laser Power Adjustment Mode to open the Laser Power Recommendation Settings window.

  2. Settings Laser Line ROI: Drag the dashed line in the raw image display area on the left or input the percentage values of the Left Boundary and the Right Boundary to determine the laser line ROI used to calculate the recommended laser power values.

  3. Laser Power Range settings: Min Laser Power and Max Laser Power settings. Maximum laser power should ensure that the laser lines at this power are overexposed, and minimum laser power should ensure that the laser lines at this power are still clearly recognizable.

  4. Click Apply to complete the settings.

1.7.2. Laser Power Value

Parameter Description

Set the power of the emitted laser light, which affects the brightness of the laser lines in the raw image.

Visibility

Beginner, Expert

Values

  • Value range: 1% to 100%

  • Default value: 80%

Instruction

If the object is light-colored, you can decrease this parameter to reduce the brightness of the laser lines. If the object is dark-colored, you can increase this parameter to enhance the brightness of the laser lines.

1.7.3. Laser Adjustment Stability Factor

Parameter Description

Control how fast the laser intensity changes from the current state to the target state.

The smaller the value, the faster the adjustment, but it may lead to brightness fluctuations. The larger the value, the smoother the adjustment, but the slower the response.

Visibility

Expert

Values

  • Value range: 0.875 to 2.13

  • Default value: 0.875

Instruction

When the brightness fluctuation is significant, you can appropriately increase this parameter; when the response speed is insufficient, you can appropriately decrease this parameter.

This parameter is required when Exposure Mode is set to Timed and Laser Power Adjustment Mode is set to Auto.

1.7.4. Laser Power 2

Parameter Description

Once this parameter is enabled, independent laser power can be set for the second frame (short exposure frame) in a dual-frame HDR.

Visibility

Beginner

Values

  • On

  • Off (default)

Instruction

  • Once this option is enabled, you can set the laser power of short exposure frames individually through the Laser Power Value below.

  • When this option is disabled, two frames of HDR share the same Laser Intensity Value.
Laser Power Value

Parameter Description

Set the power of the emitted laser light, which affects the brightness of the laser lines in the raw image. This parameter is used for the second frame (short exposure frame) in the Dual-frame HDR.

Visibility

Expert

Values

  • Value range: 1% to 100%

  • Default value: 60%

Instruction

  • When the bright area is significantly overexposed, you can decrease the Laser Intensity Value of the second frame.

  • When adjusting this parameter, it is recommended to adjust it together with the Exposure Time 2 of the second frame to take into account the details of both bright and dark regions.

1.7.5. Laser Operation Mode

Parameter Description

Sets the laser operation mode.

Visibility

Beginner, Expert

Values

  • Strobe

  • Always on

  • Off

Instruction

  • Strobe: Emits laser light only during exposure. Suitable for normal acquisition scenarios, reducing the impact of continuous laser activation.

  • Always on: Keeps the laser on after acquisition starts. Suitable for scenarios where the position of the laser line needs to be observed or located.

  • Off: Keeps the laser off. Suitable for troubleshooting laser crosstalk between multiple cameras.

Always on and Off only take effect in the preview mode.

2. ROI

Parameter Description

ROI defines the data processing range, reduces the amount of data to be processed, and enhances the max scan rate.

You can set a fixed ROI on the X-Z plane or set a dynamic ROI that varies along the scan direction.

Only fixed ROI settings are displayed in the preview mode.

Dynamic ROI can only be used in the Scan Mode. See ROI in the scan mode for details.

Visibility

Beginner, Expert

Values

Fixed (default)

Instruction

It cannot be edited in the preview mode. If you need to adjust the parameters, please set them in the Profile Mode. See ROI for details.

3. Profile Extraction

Parameter Description

The parameters in this category affect Profile Extraction results.

Visibility

Beginner, Expert

Values

  • Single Region (default)

  • Multi-Region

Instruction

  • The following parameters need to be configured h Single Region.

  • When Multi-Region is selected, parameters related to Profile Extraction and Interference Suppression need to be clicked on the right Edit button to open the Profile Extraction tool and configured by region in the tool. Refer to Multi-Region Profile Extraction for details.

The Dynamic Optimization function in the scan mode is unavailable h when Multi-Region is selected.

3.1. Spot Selection

Description

When the target object has complex surface reflecting conditions, the raw image might contain multiple laser lines due to situations such as interreflection. During the process of profile extraction, after the filtering of the other parameters, a pixel column may still contain multiple laser lines. This parameter specifies the laser line for profile extraction.

Visibility

Beginner, Expert

Values

  • Balance: Selects the laser line with the best comprehensive effect for profile extraction.

  • Clearest: Selects the laser line with the clearest profile for extraction.

  • Brightest (default): Selects the laser line with the highest intensity for profile extraction.

  • Nearest: selects the laser line closest to the laser profiler for profile extraction.

  • Farthest: selects the laser line farthest from the laser profiler for profile extraction.

  • Width: Selects the laser line with the widest effective width for profile extraction.

  • Finest: Selects the laser line with the thinnest effective width for profile extraction.

  • Invalid: regards the pixel column as invalid and discards the spots. The profile therefore has a gap. Usually used for complex situations where selection is difficult to make.

Instruction

Adjust this parameter based on the actual needs.

When the Spot Selection parameter is set to Nearest or Farthest, the Expected Intensity Threshold parameter is displayed.

3.1.1. Expected Intensity Threshold

Description

Set the expected intensity threshold for the Nearest or Farthest point selection mode.

If a pixel column contains points whose intensity is not lower than this threshold, extraction points are selected from those points first according to the Nearest or Farthest distance rule.

If no points in a pixel column meet this intensity threshold, valid points are still selected according to the configured distance rule.

Visibility

Beginner, Expert

Values

  • Value range: 0 to 255

  • Default value: 0

Instruction

  • When the reflection of the target surface is more complex and stray light is prevalent, you can appropriately increase this threshold to suppress low-intensity interference points.

  • If the valid points are overfiltered, you can decrease this threshold.

3.2. Intensity Adjustment

Parameter Description

Sets the scaling factor for laser line intensity. A smaller value preserves details in bright regions; a larger value makes dark-region details more visible but may cause loss of details in bright regions.

Visibility

Expert

Values

  • 0.25×

  • 0.5×

  • 1.0× (default)

  • 1.5×

  • 2.0×

  • 4.0×

Instruction

  • When the laser line is dim, you can appropriately increase the scaling factor.

  • When details in bright regions are lost, you can appropriately decrease the scaling factor.

  • It is recommended to prioritize adjusting Exposure Time and Laser Power Value, and then finetune the scale factor based on the display effect.

3.3. Edge Selection

Description

This parameter is used to select the location for extracting the profile in the laser line.

Refer to Profile Extraction Process for the function of this parameter during profile extraction.

Visibility

Expert

Values

  • Top edge: extracts the profile from the top edge of the laser line (the blue line in the figure below).

  • Center: extracts the profile from the center of the laser line (the green line in the figure below).

  • Bottom edge: extracts the profile from the bottom edge of the laser line (the red line in the figure below).

edge selection

Instruction

Adjust this parameter based on the characteristics of the target object and the similarity between the profile and the actual object.
If the target object is a transparent/translucent object, such as glue, you can select Top edge.

3.4. Detail Resolution Mode

Description

Sets the ability to resolve fine details during laser line extraction.

Visibility

Beginner, Expert

Values

  • Sensitive: More responsive to fine laser line variations, making it easier to distinguish closely spaced or overlapping laser lines. However, it may cause depth fluctuations in the point cloud.

  • Balanced: Provides a balance between point cloud quality and laser line detail resolution.

  • Stable: Provides higher point cloud quality with less depth fluctuation.

Instruction

When the Edge Selection parameter is set to Top edge or Bottom edge, setting this parameter value to Sensitive allows the extracted profile to be closer to the edge of the laser line.

3.5. Detection Sensitivity Mode

Parameter Description

Set the filtering sensitivity for laser line extraction to adapt to different surface characteristics and acquisition conditions.

Visibility

Beginner, Expert

Values

  • Very low: Only laser lines with prominent features and high quality are retained under the strictest screening conditions.

  • Low: The filtering conditions are strict, and the results are stable. However, weak laser lines may be filtered out.

  • Medium: Balance stability with weak line retention.

  • Height: If the filtering conditions are relaxed appropriately, it is easier to retain weaker, finer, or lower-contrast laser lines.

  • Very high: The filtering conditions are relaxed as much as possible, and the weak laser lines and fine features are retained as much as possible.

  • Custom: Set the relevant parameters manually to meet the requirements of specific scenarios.

Instruction

  • When the profile contains too much noise and false positives are obvious, you can decrease this parameter to improve the filtering strictness.

  • When the reflection of the target surface is weak and small features are easy to be lost, you can increase this parameter to improve the weak line retention capacity.

  • After selecting Custom, the following parameters are displayed: Intensity Threshold, Sharpness Threshold, Min Effective Width, and Max Effective Width.

  • It is recommended to adjust Intensity Threshold and Sharpness Threshold first, and then set Min Effective Width and Max Effective Width according to the actual laser line width range.

3.5.1. Intensity Threshold

Description

Sets the minimum intensity of the laser line. Pixels with intensity values lower than this threshold are treated as noise and excluded from Profile Extraction.

Intensity is calculated based on the gray values of valid pixels in the laser lines. You can refer to the Intensity Curve to verify the threshold.

Visibility

Beginner, Expert

Values

  • Value range: 0 to 255

  • Default value: 20

Instructions

In the data display area, select Imaging Characteristic Curve. In combination with the Intensity Curve you can observe the intensity distribution of the laser lines and set Intensity Threshold.

When there is too much noise and false detections are obvious, you can appropriately increase Intensity Threshold to suppress low-intensity interference points. When the profile of the weakly reflective region is prone to loss, you can appropriately decrease Intensity Threshold to retain valid points.

Profile extraction results with different Intensity Threshold values (all other conditions identical):

Intensity Threshold: 20

intensity 20

Intensity Threshold: 50

intensity 50

Intensity Threshold: 70

intensity 70

3.5.2. Sharpness Threshold

Description

Set the minimum sharpness of the laser lines. Pixels with grayscale values smaller than this value will not participate in Profile Extraction.

Refer to Profile Extraction Process for the function of this parameter during profile extraction.

Visibility

Beginner, Expert

Values

  • Value range: 0 to 255

  • Default value: 0

Instruction

Increasing this parameter can exclude the laser lines produced by stray light or interreflection, which are usually too dark and blurry.
Once Imaging Characteristic Curve is selected in the data display area, the Sharpness curve of the profile will be displayed below the raw image to help adjust this parameter. For details, refer to Sharpness curve.

3.5.3. Min Effective Width

Description

Laser line width is a property of each pixel column in a laser line. It is equal to the number of valid pixels in a pixel column.
This parameter sets the min effective width for the laser lines. If the width of a pixel column in a laser line is smaller than this value, this pixel column in this laser line does not participate in profile extraction.

Visibility

Beginner, Expert

Values

  • Value range: 0 to 1022

  • Default value: 1

Instructions

Setting appropriate minimum and maximum widths can exclude the laser lines produced by stray light or interreflection, which are usually too wide or too narrow.

After selecting Imaging Characteristic Curve in the data display area, the Effective Width Curve of the profile will be displayed below the raw image to help set Min Effective Width and Max Effective Width. For more information, refer to Effective Width Curve.

3.5.4. Max Effective Width

Description

Laser line width is a property of each pixel column in a laser line. It is equal to the number of valid pixels in a pixel column.
This parameter sets the maximum width for the laser lines. If the width of a pixel column in a laser line is greater than this value, this pixel column in this laser line does not participate in profile extraction.

Visibility

Beginner, Expert

Values

  • Value range: 2 to 1023

  • Default value: 1023

Instructions

Setting appropriate minimum and maximum widths can exclude the laser lines produced by stray light or interreflection, which are usually too wide or too narrow.

After selecting Imaging characteristic curves in the data display area, the Effective Width Curve of the profile will be displayed below the raw image to help set Min Effective Width and Max Effective Width. For more information, refer to Effective width curve.

4. Interference Suppression

Parameters in this category are used to reduce interference factors and improve data quality and reliability.

4.1. Abnormal Reflection Suppression

Parameter Description

Suppresses abnormal points caused by reflections (such as outliers and spikes), improving measurement reliability.

Visibility

Beginner, Expert

Values

Enable the Abnormal Reflection Suppression toggle switch:

  • When the toggle switch is turned on, the abnormal reflection suppression setting will be applied.

  • When the toggle switch is turned off, the abnormal reflection suppression setting will not be applied.

Instruction

If the target object has critical features of very small dimensions (such as vertical surfaces of narrow walls or thin plates), disabling this parameter is recommended to avoid incorrectly removing valid features. If the target object has interreflection interference, it is recommended to enable this option.

4.2. Halo Filtering

Parameter Description

Once this option is enabled, you can set the halo filter intensity to filter out the diffuse bright bands (halos) near the main laser line caused by strong reflections, avoiding false profile extraction.

Visibility

Beginner, Expert

Values

Enable the Halo Filter toggle switch:

  • When the toggle switch is turned on, halo filtering settings will be applied.

  • When the toggle switch is turned off, halo filtering settings will not be applied.

Halo filter intensity:

  • Value range: Very low, Low, Medium, High, Very high

  • Default value: Very low

Instruction

  • It is recommended to enable this option when there are scattered bright bands near reflective surfaces or high-brightness areas, and the profile contains false extraction.

  • Once this option is enabled, it is recommended to use a lower filter intensity first. If false extraction due to halos is still evident, then gradually increase the filter intensity.

  • If the target edge details are oversuppressed or the profile is incomplete, you can reduce the filter intensity and disable the Halo Filtering option if necessary.

4.3. Mask

Parameter Description

Use masks to exclude unneeded data, such as noise and laser lines produced by interreflection.

Masks are divided into Fixed Mask and Dynamic Mask.

  • Fixed mask: The mask region is fixed, suitable for scenarios where the target object is stable and the interference region is fixed.

  • Dynamic mask: The mask area changes with the scan line, suitable for scenarios where the interference area changes with motion. Dynamic masks can only be edited in the scan mode. For details, refer to Edit Dynamic Masks, window=_blank.

Visibility

Beginner, Expert

Values

  • Fixed (default)

Enable Mask toggle switch:

  • When the toggle switch is turned on, the added masks will be applied.

  • When the toggle switch is turned off, the added masks will not be applied.

Instruction

Click the Edit button to the right of Edit Mask to open the Mask Tool window and configure the settings. You can add, edit, and delete fixed masks in the tool. See the following for detailed instructions.

4.3.1. Use Mask Tool

Through the mask tool, you can add, edit, and delete masks.

① Add Masks

Follow these steps to add masks:

  1. Select the appropriate tool in the toolbar on the left:

    • rectangle: used to add a rectangle mask.

    • polygon: used to add a polygon mask.

  2. Determine the location of the unneeded data in the raw image and draw a mask:

    • Rectangle mask: Hold and drag.

    • Polygon mask: Click to add a vertex of the polygon mask. After all needed vertices are added, press the Enter key or right-click to finish drawing the polygon mask.

      In a polygon mask, the overlapped regions are not effective:

      overlapped mask

  3. After all masks are added, click Apply to close the current window.

    After you click Apply, the Enable Mask toggle switch will be turned on automatically. If the masks do need to be applied, turn off the toggle switch and acquire data again.
② Edit Masks

If the position, shape, or size of the masks are not satisfactory, follow these steps to edit the masks:

  1. Click selection in the toolbar on the left.

  2. Select the mask that needs to be edited and conduct the needed adjustment:

    • Move a mask: Select the mask and drag.

    • Adjust the size of a rectangle mask: Select a vertex of the rectangle mask and drag.

    • Adjust the shape of the polygon mask: Select a vertex of the polygon mask and drag.

      Click Acquire again at the top to acquire the raw image after the masks are edited to check the effect of the masks.

  3. After all editing is completed, click Apply to close the current window.

    After you click Apply, the Enable Mask toggle switch will be turned on automatically. If the masks do need to be applied, turn off the toggle switch and acquire data again.
③ Delete Masks

Follow these steps to delete unsatisfactory masks:

  1. In the right panel, select the mask that needs to be deleted in Mask list, and click delete.

    If you need to delete all the masks, click Clear to the right of Mask list.

  2. In the pop-up window, click Confirm to delete the mask.

    Click Acquire again at the top to acquire the raw image after the mask is deleted to check the effect of the remaining masks.

  3. After all deletion is completed, click Apply to close the current window.

    After you click Apply, the Enable Mask toggle switch will be turned on automatically. If the masks do need to be applied, turn off the toggle switch and acquire data again.
Multi-Region Profile Extraction Process

Once Profile Extraction is set to Multi-Region, you can divide the region into multiple regions in the Profile Extraction tool and set the profile extraction and interference suppression parameters for each region separately.

Follow these steps to set up multi-region profile extraction:

  1. Set Profile Extraction to Multi-Region.

  2. Click the Edit button to the right of Profile Extraction to open the Profile Extraction tool.

  3. Set the Number of extraction areas and select the area to be edited.

  4. Adjust the region boundaries so that each region covers the corresponding target region.

    When adjusting the region boundaries, you can check Hide Edit Layer to view the raw image if the edit layer affects the image viewing.

  5. Set the following parameters according to the actual situation of the current region:

  6. Repeat steps 3 to 5 to complete setting other regions.

  7. If the effect meets requirements, click the Apply button to apply and exit the tool.

5. Profile Processing

The parameters in this category process the extracted profile, improving the quality of the profile.

5.1. Outlier Removal

Description

This parameter removes the outliers in each profile. Outliers are clustered points away from the object profile.

Visibility

Beginner, Expert

Values

  • Off

  • Very low

  • Low

  • Medium (default)

  • Height

  • Very high

Instruction

A higher level of Outlier Removal Intensity removes more outliers but may also remove some surface features of the object.

Point clouds obtained with different Outlier Removal values (all other conditions identical):

Off Very low Very high

outlier removal off

outlier removal very low

outlier removal very high

5.2. Denoising Smoothing

Description

Suppresses spike noise in the profile while largely preserving edge features.

Suitable for scenarios with outliers or noticeable local interference.

Visibility

Beginner, Expert

Values

  • Off (default)

  • Very low

  • Low

  • Medium

  • High

  • Custom

Instruction

Sets the intensity of denoising smoothing.

  • Higher intensity suppresses spike noise more strongly but may cause more profile detail loss. Suitable for scenarios with outliers or noticeable local interference.

  • When Custom is selected, you can set the Window Size for denoising smoothing manually.

5.2.1. Window Size

Description

Sets the window size for denoising smoothing.

Visibility

Beginner, Expert

Values

  • 3

  • 5 (default)

  • 7

  • 9

Instruction

Larger window size results in stronger noise suppression but may cause more profile detail loss.

Profile extraction results with different Denoising Smoothing Window Size values (all other conditions identical):

Denoising smoothing not used

preview denoise off

Denoise Smoothing Window Size: 9

preview denoise high

5.3. Uniform Smoothing

Description

Applies uniform smoothing to the profile, reducing overall noise and data fluctuations.

Suitable for scenarios with low noise and high requirements for data continuity.

Visibility

Beginner, Expert

Values

  • Off (default)

  • Very low

  • Low

  • Medium

  • Fairly high

  • Height

  • Very high

  • Custom

Instruction

Sets the intensity of uniform smoothing.

  • Higher intensity provides stronger smoothing effect but may cause more edge detail loss.

  • When Custom is selected, you can set the Window Size for uniform smoothing manually.

5.3.1. Window Size

Description

Sets the window size for uniform smoothing.

Visibility

Beginner, Expert

Values

  • Value range: 3 to 255

  • Default value: 9

  • Increment: 2

Instruction

Larger window size results in stronger smoothing effect but may cause more profile detail loss.

Profile extraction results with different Uniform Smoothing Window Size values (all other conditions identical):

Uniform smoothing not used

preview uniform off

Uniform Smoothing Window Size: 51

preview uniform 51

5.4. Gap Filling

The parameters in this category are used to fill the gaps in the profile, improving the continuity and stability of the profile.

5.4.1. Max Gap Points

Description

Sets the size of the gaps that can be filled in the profile.

When the number of consecutive data points in a gap in the profile is no greater than this value, this gap will be filled.

Visibility

Beginner, Expert

Values

  • Value range: 0 to 62

  • Default value: 0

Instruction

Adjust based on the size of the gaps to be filled.

Gap Filling may distort features with abrupt depth variations, such as object edges. You can adjust Gap Filling Edge Preservation to reduce the influence on these features.

Raw images obtained with different Gap Filling values (all other conditions identical):

Gap Filling: 0

padding before integrated

Gap Filling: 5

padding after integrated

5.4.2. Edge Preservation

Description

This parameter sets the degree of preservation of object edges when filling gaps.

Visibility

Expert

Values

  • Value range: 1 to 5

  • Default value: 3

Instruction

If you need to preserve features with abrupt depth variations, such as object edges, you can increase this parameter, but the amount of gaps being filled will decrease.

5.4.3. Max Search Window

Description

Sets the maximum range for searching neighboring data during gap filling.

Visibility

Expert

Values

  • Value range: 1–8

  • Default value: 1

Instruction

The larger the value, the wider the search range, and the gaps are more likely to be filled, but edge details may be lost.

5.4.4. Filling Method

Description

Sets the method for gap filling.

Visibility

Expert

Values

  • Linear Filling (default)

  • Nearest-neighbor filling

Instruction

  • Linear filling: Fills gaps in a linear manner, resulting in smoother results.

  • Nearest Neighbor Filling: Fills gaps using neighboring data, which can better preserve local abrupt features.

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