DJI Terra vs DJI Modify - The Difference Between Processing and Editing

As drone programs mature, confusion often arises around DJI’s software ecosystem - particularly between tools that process data and tools that edit results. DJI Terra and DJI Modify are frequently mentioned together, but they serve fundamentally different roles.

This article explains the practical difference between DJI Terra and DJI Modify, focusing on where each fits in a real-world workflow.

High-Level Positioning

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DJI Terra

 

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DJI Modify

 

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A simple rule:

• Terra creates data

• Modify fixes data

They are complementary, not interchangeable.

DJI Terra — From Raw Flights to Usable Outputs

DJI Terra is DJI’s photogrammetry and LiDAR processing platform. It turns raw drone data into structured outputs suitable for analysis, measurement, and delivery.

What DJI Terra Actually Does

Processes RGB imagery into:

• Orthomosaics

• Digital Surface Models (DSM)

• Digital Terrain Models (DTM)

• Textured 3D meshes

Processes LiDAR data into:

• Classified point clouds

• Terrain models

• Contours and measurements

• Supports RTK and GCP-based accuracy workflows

• Enables mapping, surveying, and volumetric analysis

In practice, Terra answers the question:

“What does the site look like, quantitatively?”

Where Terra Fits Best

DJI Terra is essential when:

• Accuracy matters

• Measurements must be defensible

• Outputs feed into CAD, GIS, or survey workflows

• LiDAR or photogrammetry data must be reconstructed correctly

It is a processing engine, not an editing tool.

DJI Modify — Refining and Repairing 3D Outputs

DJI Modify is a 3D model editing and repair application. It does not create maps or point clouds from raw data. Instead, it works on models that already exist.

What DJI Modify Actually Does

• Repairs holes and defects in 3D meshes

• Removes unwanted objects or noise

• Smooths surfaces

• Simplifies geometry for downstream use

Prepares Models for: 

• Visualisation

• Simulation

• CAD import

• Third-party software compatibility

Modify answers a different question:

“How do we clean this model so it’s usable?”

Where Modify Fits Best

DJI Modify is valuable when:

• Models need to be presentation-ready

• Data must be exported cleanly

• Raw reconstructions contain artefacts

• Outputs are being shared outside technical teams

It is an editing and optimisation tool, not a mapping solution.

Processing vs Editing — A Critical Distinction

Trying to use Modify instead of Terra — or Terra instead of Modify — results in workflow gaps and frustration.

How They Work Together in Practice

In a typical enterprise workflow:

1. Capture data (RGB or LiDAR)

2. Process in DJI Terra

   • Generate point clouds, orthos, or meshes

3. Refine in DJI Modify

   • Clean, repair, and optimise models

4. Export to CAD, GIS, or visualisation tools

Each tool does one job well. Together, they reduce reliance on third-party software for common tasks.

Cost, Complexity, and ROI

DJI Terra ROI

• Core platform for mapping and surveying

• Required for measurement-driven programs

• High utilisation in LiDAR and photogrammetry workflows

DJI Modify ROI

• Optional but valuable for polish and compatibility

• Reduces time spent fixing models downstream

• Improves stakeholder-ready deliverables

Most enterprise operators need Terra. Fewer need Modify — but those who do save significant time.

MirrorMapper’s Take

DJI Terra and DJI Modify are not competing products.

• Terra turns flights into data

• Modify turns data into usable models

Understanding this distinction prevents overbuying, underutilisation, and workflow friction. When selected correctly, they complement each other and streamline end-to-end delivery.