Cloud & Mesh - Extract Columns

🏛️ Columns_Construction Tools /

• 🔍 Extract Columns

Extract Columns. Part of Columns _Construction Tools. This script creates horizontal sections from point clouds, detects column shapes (rectangular or circular), and fits them to predefined sizes from a catalog.

Requirements: 

• Before running the script:

• Prepare a point cloud with visible columns. Each column should be represented as a separate point cloud. Select all point cloud segments and run the script.

• (Optional) Prepare a CSV catalog with standard column sizes (rectangular or circular).

Steps:

1. Select point clouds in your project that contain columns.
   
   

2. Run the script from the Columns_Construction Tools menu
   
   

3. The script will open a dialog where you can:

• Choose column type: Rectangular or Circular.

• Set section parameters: step, thickness, and edge offset.

• Define point reduction spacing for better fitting.

• (Optional) Enable quality control: position and angle tolerances, remove outliers.

• Load a catalog CSV file for standard sizes.
  
  

The script slices the point cloud into horizontal sections based on your settings.

4. Size detection & catalog matching

• Auto-detects optimal size from sections.

• Suggests the best match from the catalog.

• Allows interactive or automatic application of catalog sizes.

Fits rectangles or circles to each section using the selected catalog size.

5. Quality control (optional)

• Analyzes consistency of positions and orientations.

• Removes outliers based on tolerance settings.

Completion

Displays the number of created shapes and any removed outliers.

You can now use the extrusion script to create 3D columns.

Notes:

• For noisy point clouds, reduce noise or classify layers before running.

• Recommended point spacing for fitting: 3–5 cm.

• Catalog CSV format:

• Rectangular: Name, Length, Width, Description

• Circular: Name, Radius, Diameter, Description, Category