Compare Scans

Menu: Analyze / Compare scans

The Compare Scans tool allows users to analyze differences between two scans captured in the same area. To use this function, the VisionLidar project must contain at least two separate scans.

1. Selecting Scans for Comparison

• In the “Files to Compare” section, select the two scans to be analyzed.

• The comparison is made perpendicular to a selected plane or surface.

2. Configuring the Comparison Parameters

Color Interval and Histogram Display

• The “Range of Colors” represents a histogram distributed equally across a set interval.

• The “Color Interval” defines the spacing of histogram values.

Cutoff Distance

• Points outside the specified range are:
  ✔ Isolated from the view
  ✔ Excluded from the histogram results

3. Running the Comparison and Viewing Results

1️⃣ Click “Compare” to process the scan differences.
2️⃣ The histogram results will appear in the right column.
3️⃣ A secondary window will display a graphical representation of the comparison.

Viewing Note:
To see colors in the secondary window, enable “Color by RGB” mode. Otherwise, the window may appear without meaningful color differences.

4. Generating a Report

A .PDF report can be created with this tool, containing:
✔ Title & Subtitle (customizable via the “...” button)
✔ Histogram of the comparison results
✔ Screenshot of the secondary window

Steps to Create a Report:

1. Click “Compare” to calculate the distribution of points.

2. Click “Create Report” to generate the .PDF file.

📌 Best Practices for Accuracy:
✔ Hide unwanted classes before running the comparison.
✔ Use a fence to isolate the area being analyzed.