How to export your Agisoft Metashape project for Nira
First, a note on georeferencing:
To best utilize all of Nira's georeferencing features, it is recommended that you export your files using georeferenced coordinates. If you plan to use georeferenced coordinates, you'll need to determine an appropriate coordinate system for your project. Here's how:
• Choose a UTM Zone if you're not sure which coordinate system to use:
Simply drag one of your project's photos into the UTM Zone Identification webpage and make note of the UTM Zone displayed. You'll use it in one of the steps below.
• If you already have a preferred coordinate system:
Be sure it's cartesian. To check this, look up the EPSG number here: https://epsg.io. Ensure that it includes "Coordinate System: Cartesian 2D CS". For example, the page for EPSG:28992 confirms that is cartesian, whereas EPSG:4326 is not. If your preferred coordinate system is not cartesian, you should use a UTM Zone instead -- see the first bullet point above to learn how.
To export your files:
1. File > Export > Export Model... > Save as type: Wavefront OBJ (*.obj)
2. You can use Local Coordinates (m), but we strongly suggest using a Georeferenced Coordinate System. If you're not sure what to choose, read the tips at the beginning of this page. Be sure to enable Export texture (JPEG), Include comment Generated with Agisoft Metashape, Use UDIM texture layout, and Write metadata.xml.
Match these settings when exporting...
3. File > Export > Export Cameras... > Save as type: Blocks Exchange (*.xml)
4. We suggest you use "Cameras.xml" as the filename
5. Coordinate System setting needs to match the coordinate system you chose during the OBJ export. Be sure to disable Tie points and Control points so the xml file can be smaller in size.
Upload all of the following files to Nira:
- Photo files: (jpg, png, or tiff)
- Camera: (BlocksExchange XML)
- Coordinate System geolocation data: metadata.xml
- Textures: (.jpg files)
- Mesh: (.obj and .mtl files)
After uploading to Nira, you’ll have all of your photos available within the Show Photo… button. Be sure your photos do not have comma ( , ) characters in the filename.