Mega lossless full update

The lossless full update is an advanced feature provided by EasyAR Mega to address dynamic scene changes. It allows developers to comprehensively update the entire scene using newly collected data while maintaining the original coordinate system unchanged. The cloud algorithm will reconstruct the spatial map based on the new video data, ensuring that the positions of developed AR content do not shift, achieving seamless updates.

Features

• Comprehensive update: Fully update the entire scene, reconstructing the map using newly collected data.

• Coordinate system preservation: Keep the original coordinate system unchanged, ensuring that the positions of developed AR content do not shift.

Important

If some areas are missed during the full update collection process, the generated spatial map will also lack these areas.

Applicable scenarios

• Comprehensive environmental renovations: Such as complete mall renovations, full office floor transformations, or complete exhibition hall theme changes.
• Data quality optimization: Recollect the entire scene with higher precision to improve positioning accuracy.
• Scene expansion: Significantly expand the scope based on the original scene, requiring reconstruction of the entire area.

Note

The lossless full update is suitable for comprehensive updates of the entire scene. If only partial areas change, it is recommended to use the supplementary update feature.

Supported mapping types

• ✅ Single-map mapping task: Supports lossless full update
• ✅ Multi-map fusion task: Supports lossless full update
• ❌ Mobile-collected mapping: Does not support lossless full update (including small-scale mobile-collected tasks and object mobile-collected tasks)

Supported mapping versions

• Version 7.6 and above

Data collection

Since the lossless full update is for the overall environment, data collection should refer to: Data collection.

Lossless full update mapping

After completing data collection, you need to upload the latest collected video data to the specified lossless full update task to generate the updated spatial map.
For specific steps, please refer to: Lossless full update mapping.

Using the updated mapping result for localization

After the lossless full update mapping is completed, a new spatial map will be generated (the Block ID remains unchanged). Developers need to load the updated mapping result Block in the cloud localization library to directly use the updated spatial map for localization without modifying application code or repackaging.
The operation of loading the mapping result differs based on the mapping version:

• Cross-version upgrade: When using the lossless full update feature for older version mappings (e.g., version 7.x/8.x), the mapping version will default to the latest version (e.g., version 9.x). In this case, please refer to: Using the new version mapping result for localization.
• Same-version update: When the mapping version remains unchanged, or when upgrading from version 9.x to version 9.x, please refer to: Using the lossless full update mapping result for localization.