DJI Modify V1.4 Updates: Enhanced Point Cloud Editing Workflow

DJI Modify V1.4 Officially Released

Recognizing these pain points, DJI introduces Modify V1.4, a powerful update that transforms how professionals approach point cloud editing. It delivers a comprehensive intelligent point cloud editing workflow. It introduces advanced preprocessing tools, intelligent editing capabilities, enhanced output formats, and 3D Profile tools. These features help users quickly and efficiently generate high-quality, analyzable point cloud data.

Overview of DJI Modify’s Point Cloud Editing Workflow

Point Cloud Preprocessing

1. LAS File Import

DJI Modify supports smooth editing of ultra-large-scale point cloud data, with a maximum of 4.2 billion points per LAS file. It can load point cloud files up to half of the available system memory. For example, with 30GB of available RAM, you can load approximately 15GB of point cloud data. The software is compatible with various sources of LAS data, including those from aerial LiDAR surveys and ground-based scanning.

2. Smoothing, Noise Reduction, and Density Adjustment

After creating a new project and selecting a LAS point cloud data file, DJI Modify can perform smoothing, noise reduction, and point cloud density adjustments on the LAS data, enhancing the overall quality of the point cloud through automated algorithms.

Point Cloud Preprocessing

3. Automatic Point Cloud Classification

DJI Modify uses intelligent classification algorithms to automatically assign points to categories including:

• Ground
• Vegetation
• Buildings
• Wires
• Electric Towers
• Dynamic objects
• Vehicles

Automatic Point Cloud Classification (GIF)

The software also supports reclassification or terrain classification after importing point clouds.

• Smart Classification: Ideal for urban or multi-building scenes, supports earthwork or terrain surveying.
• Terrain Classification: Separates ground from non-ground points.

Reclassification

Intelligent Point Cloud Editing

1. Multiple Viewing Options

DJI Modify employs a proprietary point cloud rendering system for a smooth 3D editing experience. The EDL (Eye-Dome Lighting) display mode enhances the visibility of point structures. It supports multiple viewing options:

• RGB
• Classification
• Elevation
• Reflectivity
• Number of Returns
• RGB Overlaid on Classification

The model view can also display both the coordinate system and point coordinates under the cursor.

Multiple Viewing Options (Video)

Users can also hide or display point cloud layers and specific classifications. Each class supports custom ID, color, renaming, deletion, and export.

Hide/Display

2. Rectangle/Polygon/Point Selection

Supports polygon, rectangle, and point selection tools. The polygon and rectangle tools use perspective selection, capturing all points in front of the selection window. Selected points can be locally edited or deleted.

Rectangle/Polygon Selection

3. Color & Brush Selection

Color Selection: Allows selection of points with similar RGB values based on a tolerance setting—ideal for targeting color-consistent features.

Color Selection (Video)

Brush Selection: Freeform selection using a configurable brush radius, perfect for irregular surfaces and manual refinements.

Brush Selection (Video)

4. Quick Selection

For point clouds that have already been automatically classified, users can quickly select specific classes (e.g., power lines, poles, trees) with a single click. This is especially useful for correcting misclassified data efficiently.

5. Structure Selection

Leverages intelligent algorithms to identify and select planar structures (ground, rooftops, walls) and linear features(power poles, wires) to support localized intelligent editing.

6. Selected Point Cloud Processing

Users can select a specific region to apply noise reduction, smoothing, or downsampling to optimize data quality while reducing file size.

Additional Functions

1. Profile Tool

This essential analysis tool enables slicing through point cloud models for tasks like:

• Penetration assessment
• Precision analysis
• Power line inspection
• Terrain and forestry evaluation

2. Vector Output

From the refined point cloud, DJI Modify can generate:

• Digital Elevation Models (DEMs)
• Contour
• TIN (Triangulated Irregular Network)
• Gridded Point

These outputs can be directly imported into CAD or GIS software for advanced analysis or industry workflows.