Use “Track Line Editor”

In Mech-MSR, a track refers to the target of measurement, and the track line refers to the path that the track should follow. You can use the track line editor to set one or more track lines for a track.

Prerequisites

When the Measure Surface Track Step is used in a vision project, you can use the track line editor to create and adjust the track lines.

In the parameter configuration panel of this Step, click the Open the editor button under “Track Line Settings” to open the editor.

Before using the track line editor, make sure that there is valid surface data input in the “Measure Surface Track” Step; otherwise, subsequent operations cannot proceed.

Usage Workflow

Create a Track Line File

Navigate to the File list in the upper left corner of the editor and click + New to create a new file.
Enter the file name in the pop-up dialog box, and then click OK.

At this point, the editor will automatically get the input from the Step, and the acquired image will be displayed in the center of the interface.
(Optional) Navigate to the upper-right corner of the interface, click Get Step Input to update the image.
(Optional) To the right of the image, drag the slider to set the depth range to highlight the key area of the image.

After selecting a file, you can perform the Rename, Create a Copy, Delete operations via the right-click menu.

Draw a Track Line

Use the tools in the toolbar to draw and adjust track lines:

: Select Tool, mainly used to select and adjust a track line.
: Track Line Drawing Tool, for drawing track lines.

You can draw a track line by the following steps:

Select the “Track Line Drawing Tool” , and then move the cursor to the target track.
Click the left mouse button to set the first vertex, and then move the cursor and continue clicking the left mouse button to add other vertices.
Right-click to finish.

Repeat the above steps to draw multiple track lines.

Navigate to the lower left corner of the interface, and you can find the drawn track line(s) under “List of track lines.” Click ▶ to expand a track line to see all the segments of that track line. (A segment is formed between two adjacent vertices).

Adjust a Track Line

After drawing a track line, you can perform operations such as move the line, add vertices, and delete vertices.

Detailed operational instructions are as follows:

Operation	Description
Move a track line	Click the “Select Tool,” and then hover the cursor over the track line. When the cursor becomes , hold down the left mouse button and drag the mouse to move the track line.
Select a segment	You can select a segment in any of the following ways: In the “List of track lines” area, select the desired segment. In the drawing area, select the “Select Tool” and hover the cursor over the desired segment. After the cursor becomes , click the left mouse button to select the segment.
Add a vertex	Click the “Select Tool” and hover the cursor over the target segment. Press and hold the `Ctrl` key, and the cursor becomes . Click the left mouse button to add a vertex.
Delete a vertex	Click the “Select Tool.” Press and hold the `Alt` key, and then hover the cursor over the target vertex. At this time, the cursor becomes . Click the left mouse button to delete the vertex.

Operation

Description

Move a track line

Click the “Select Tool,” and then hover the cursor over the track line.
When the cursor becomes , hold down the left mouse button and drag the mouse to move the track line.

Select a segment

You can select a segment in any of the following ways:

In the “List of track lines” area, select the desired segment.
In the drawing area, select the “Select Tool” and hover the cursor over the desired segment. After the cursor becomes , click the left mouse button to select the segment.

Add a vertex

Click the “Select Tool” and hover the cursor over the target segment.
Press and hold the Ctrl key, and the cursor becomes .
Click the left mouse button to add a vertex.

Delete a vertex

Click the “Select Tool.”
Press and hold the Alt key, and then hover the cursor over the target vertex. At this time, the cursor becomes .
Click the left mouse button to delete the vertex.

Parameter Settings

During track line drawing, you can see many “small boxes” evenly spaced along the track line. Each “small box” can be used to extract a section profile from the track.

After selecting a track line in the lower-left corner, you can set the relevant parameters on the far right side of the interface.

Section Profile Settings

Set the parameters related to section profiles to determine the profile span, the width for averaging profiles, and the profile spacing.

Parameter	Description
Batch setting	After the batch setting is enabled, the configured parameters will be applied to the entire track line, and you are not allowed to set parameters for segments. It is enabled by default. Disable Batch setting to set parameters for each segment.
Length	Length refers to the profile span, perpendicular to the track line. The unit is pixels (px).
Width	Width refers to the number of pixels considered in the direction perpendicular to profiles. Each point on a profile is the average of the pixels in that column. The unit is pixels (px).
Spacing	The distance between adjacent profiles. The unit is pixels (px).

Parameter

Description

Batch setting

After the batch setting is enabled, the configured parameters will be applied to the entire track line, and you are not allowed to set parameters for segments. It is enabled by default.

Disable Batch setting to set parameters for each segment.

Length

Length refers to the profile span, perpendicular to the track line. The unit is pixels (px).

Width

Width refers to the number of pixels considered in the direction perpendicular to profiles. Each point on a profile is the average of the pixels in that column. The unit is pixels (px).

Spacing

The distance between adjacent profiles. The unit is pixels (px).

section profiles

Track line settings

Visual results of the “Measure Surface Track” Step

As shown in the figure above, you can use the track lines set in the track line editor and run the “Measure Surface Track” Step to obtain the section profile (light blue).

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