3D Viewer
Visualization
Point Cloud Rendering

Point Cloud Rendering

Structured point clouds and unstructured point clouds offer the ability to customize the appearance of rendered pixels in the 3D scene. This feature allows users to adjust point size and style to suit business needs, improving scene readability and facilitating analysis.

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Project administrators can set default parameters when adding data layers to the scene, but each user can then modify these settings on a personal, non-persistent basis.

How to Change Point Cloud Appearance

  1. Select the object: Click on the object representing the point cloud in the scene. See the instructions on object interaction.
  2. Access object properties: In the left sidebar, under the scene tree, open the object’s properties panel.
    Customize Point Cloud Properties

Available Options

Point cloud rendering options allow users to control various aspects of point display in the 3D scene:

  • Point Size: Adjusts the size of the displayed points. The effect of this parameter depends on the chosen “Type” of rendering.

  • Opacity: Controls the transparency of the points to adjust visibility.

  • Rendering Type:

    • Fixed: Pixel size remains constant regardless of the camera distance. This mode is useful for high-density point clouds or for objects that need to maintain a consistent size on the screen.
    • Attenuation: Pixel size decreases with distance from the camera. This mode optimizes rendering performance for scenes with many points or distant views by reducing the graphical load.
    • Adaptive: Pixel size is adjusted based on point density in the scene. High-density areas retain a constant pixel size, while low-density areas display smaller pixels. This mode is ideal for point clouds with variable density or for scenes with objects of varying sizes.

  • Point Shape:

    • Round: Displays points as circles.
    • Square: Displays points as squares.
    • Paraboloid: In combination with adaptive mode, pixels adopt a geometry that fills gaps between points, creating a Voronoi diagram-like effect. This allows for a more continuous and less “holey” point cloud appearance, similar to a textured mesh.
      Paraboloid Point Cloud

These customization options allow users to tailor point cloud display to match the specific characteristics of the 3D model and the analytical requirements of the task.

Last updated on by Loïc Roybon