Table of Contents

Mega Supplemental Update

Supplemental update is an advanced EasyAR Mega feature designed for changes in dynamic scenes. It lets developers append new video data to a spatial map that has already been built successfully. The cloud algorithm tries to stitch the feature points of the new data into the coordinate system of the old map, thereby updating the map without creating a brand-new Block spatial map.

Features

  • Local update: reacquires a video segment for replacement based on changes in the environment of the original map.

  • Coordinate system preservation: supplemental data is automatically aligned to the coordinate system of the original spatial map, ensuring that the positions of existing AR content do not shift.

  • Supplemental limits: up to 10 supplemental data items can be added to one Block spatial map, and the acquisition time of each supplemental data video must be less than 16 minutes, which is equivalent to uploading up to 2 segments of 360 video data. Videos longer than 16 minutes cannot be used as supplemental data.

Applicable Scenarios

  • Area update: for example, a shop in a shopping mall is updated, or some corridors are redecorated.

  • Missed-area rescan: a corner of the original map was missed during acquisition and you want to supplement that area.

Note

Supplemental update is not suitable for large-area spatial data supplementation. If a large area is added, it is recommended to reacquire the entire area and use the lossless full update feature.

Supported Mapping Types

  • ✅ Single-map mapping task: supports supplemental update
  • ✅ Multi-map fusion task: supports supplemental update
  • ❌ Phone acquisition mapping: does not support supplemental update, including small-area phone acquisition tasks and object phone acquisition tasks

Supported Mapping Versions

Supplemental update mapping is supported in the following mapping versions:

  • Version 8.5
  • Version 9.4 and later
Note

To perform supplemental update mapping on version 7.6 or later, upgrade the mapping version to the latest version first. For details, see Upgrade Mapping Version Using Original Data.
After the upgrade is complete, you can perform supplemental update mapping.

Acquire Data for the Changed Area

Because the usage scenarios differ, the acquisition focus also differs. For detailed acquisition methods, see Acquire Data for the Changed Area.

Important

The newly acquired data must have 20-50 meters of visual overlap with the area covered by the original map.

Supplemental Update Mapping

After the data for the changed area is acquired, you need to upload the supplemental data to the specified supplemental update task to generate the updated spatial map.
For detailed steps, see Supplemental Update Mapping.

Use the Updated Mapping Result for Localization

After supplemental update mapping is complete, a new spatial map is generated while the Block ID remains unchanged. Developers only need to load the supplemental update result Block in the cloud localization library to directly use the updated spatial map for localization, without modifying application code or repackaging the app.
For detailed steps, see Use Supplemental Update Mapping Results for Localization.