Blender Merge Selected Cameras v1.1 Addon Free Download

Merge Selected Cameras v1.1.0 (Blender 4.4) Download

This Blender addon converts individual cameras exported from photogrammetry software (such as RealityScan) into a single animated camera. It allows you to use photogrammetry software as a camera tracking tool within Blender.

Features
Merges sequential cameras into one continuous animated camera.
Supports variable focal length and sensor shift animations.
Can process multiple cuts or additional photogrammetry sequences captured at the same location.
Automatically sets background images based on Blender Movie Clips.
Location
3D View > Sidebar > Tracking Tab> Merge selected cameras

How to Use
0. Export from RealityScan
Export the scene as Alembic (.abc) or FBX (.fbx) with camera export enabled.
Texture and image export are optional.
Ensure that the sequence is in order, as the addon assumes a sequential camera setup.
1. Merge Sequential Cameras
In Blender, navigate to the addon panel:

Click Merge Cameras to automatically combine the selected camera’s sequence into one animated camera.
Only one camera selection is required to execute.
Options:
Selected Cameras Only
Merge only the selected cameras. Useful for manual control or when sequence recognition fails.
Default: OFF

Delete Original Cameras
Automatically deletes source cameras after merging.
Default: ON

Camera Naming
Choose whether to use a custom name or inherit the sequence name.

2. Background Image Setup
Use Set as Background to assign a Movie Clip to the created camera.
Features:
Render resolution is automatically adjusted to match the Movie Clip.
Synchronize the start frame of the selected Movie Clip with the camera’s start frame.
Set the sensor size and focal length of the selected Movie Clip to match the camera’s values. If the focal length is animated (zoom), the value at the start frame will be used.
Technical Notes
The animation starts from the current timeline frame when the process is executed.
The end frame is automatically determined based on the sequence length.
Missing frames in the sequence are not skipped; the cameras will connect sequentially regardless.
Fully supports:
Focal length animations
Sensor shift animations
(Keyframes are only inserted when these properties change.)
Recommended Settings for RealityScan
Select all images and use Prior calibration to fix the camera group.
Specify focal length using the 35mm equivalent standard (=sensor width: 36mm).
Apply lens distortion correction in advance and set Prior Lens Distortion Fixed.
Brown model distortion coefficients can be used in Blender.
Distortion parameters are not easily transferable to Nuke or other VFX software.
When exporting:
Use Alembic or FBX.
Enable Camera Export.
Undistorted images and texture export can be disabled if not needed.
For faster processing:
The preview mesh is sufficient to use as a guide.
Mesh and texture processing can be accelerated by using only key frames (e.g., every 5 or 10 frames) for mesh and texture processing.
Disable Undistort images, Export images, etc. in export if you do not need them.

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Filename:Merge Selected Cameras v1.1.0.zip – 4 KB

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