GeoTracker is a Nuke node for model-based single view object and camera tracking. It’s accurate, easy-to-use and fast. GeoTracker is developed using low level Nuke’s C++ API. That’s why it could be pretty seamlessly integrated into your familiar workflow.
GeoTracker is designed to fill the gap in Nuke’s functionality and provide fast and reliable object tracker right in the compositing software.
GeoTracker is built on top of PinTool and includes all its strengths such as simple and powerful model positioning tool, advanced model drawing, lots of exporting options, focal length estimation, etc.
GeoTracker can track camera even in tricky shots with zoom and high motion blur. Scene-based camera tracking gives you ability to use keyframes, which allows localizing and tackling complex part of a sequence. Also resulting camera is already aligned to a scene geometry
Zooming lenses could add a significant complexity for simple camera tracking. Fortunately for scene-based tracking you can track it much easier and more precise.
To obtain more stable and robust object tracking you can import you ordinary 2D tracks from Nuke’s Tracker node into GeoTracker. It will consider them as “gold” tracks and give them additional weight in solver. Usually you’ll not need them but for really complex shots with poor features they can help a lot.
GeoTracker allows you to use 2D mask to eliminate occlusion and 3D surface masks to exclude reflective and transparent parts of a tracked object.
Although it is possible to estimate focal length in key frames and use interpolated focal length between them it could be very useful to track camera zoom changes with focal length tracking.
“Magic Keyframe″ allows you to automatically set up key frames. It speed ups tracking process a lot and provides you with consistent and precise key frames.
GeoTracker allows tracking of objects with skeleton by calculating bone transformations. It’s also possible to fixate some degrees of freedom to match real object behaviour or to export single bone transformation to attach rigid object to tracked rigged geometry.
Demo videos and tutorials for beta versions are currently available. Also you may take a look on the GeoTracker quick user guide.
Yes, you need a model of an object or a scene to perform tracking.
No, it shouldn’t. But the better model you have the better results you obtain from every key frame.
The model should fit the scene. Minor details aren’t very important and could have negative impact on tracking performance
You may use 3D surface mask to exclude semi-transparent or reflective parts from tracking process.
If the overlapped area is relatively small GeoTracker will handle it. Otherwise you may use a 2D mask to exclude overlapping from tracking process.
GeoTracker’s output is the transformed input geometry.
No. As soon as you’ve done tracking you may export the results as a usual Nuke node (TransformGeo or Camera node) to pass them to other machines.
You can export the results as a TransformGeo or a Camera node on the results tab.
You can export the results from the exported TransformGeo or Camera node as a .chan file.
There are a few videos demonstrating the basic tracking process and some major features. More detailed tutorials will be available later.