The unit of measure used is up to you, because Nuke equates any value as being equal to one unit in 3D space. This allows you to create visual effects and motion graphics within the context of the entire scene, as opposed to simply within the plane of a single element. You can then use that information to add 3D objects to the original scene. Camera Tracker - Track --> Solve (really good solve 0.66) 2. Is there some way to scale the scene correctly in Nuke? If it's just global scale you need to fix and you're not trying to align it to something specific then you can set the scene scale in the bottom of one of the tabs in the camera tracker. A quick and dirty camera tracker. Useful for tracking a point for a particle emmiter. More frames will take longer but often give better results because we get more information. In Davinci Resolve 16.1.xx I hit Render all Savers (Fusion Tab) I import the FBX into Blender but: - Point Cloud is missing --> really important for reference - Scale is … A 3D tracker does its mathematical magic in a series of well-defined steps: A mass (usually automated) 2D track, or auto track, of the scene is performed, tracking many (sometimes hundreds or thousands) high-contrast candidate (or potential) points in the scene. Highest quality results Used by many of the best VFX houses in the industry, the Nuke family’s state-of-the-art tools make producing pixel perfect, film-grade results both painless and creatively satisfying. Nuke's 3D Camera Tracker is a powerful tool that allows you to do 3D matchmove shots with live-action clips. For this task, we started with fresh footage and script with a camera tracker, 3D scene and point cloud already set up. The three-step process seeds track points, models and solves the 3D feature positions of the track points, then creates an After Effects camera for the scene. The image shows User Tracks, but the same workflow applies to Auto Tracks. 3D Motion Tracking Application Technique. I know there are "scene constraints" but I don't really understand it and I can't figure out if the value I'm typing in is in mm, cm or meters. The coordinates of the solid that the camera tracker generates are quite large: I've tried to parent the layer and camera to a 3D null and scale the scene down, because I thought I might have reached the "limit" (if that exists?) You can apply a variety of techniques to smooth out the camera movement in a shot, using the After Effects Warp Stabilizer VFX effect, and track the camera to add objects into a scene realistically. If it's just global scale you need to fix and you're not trying to align it to something specific then you can set the scene scale in the bottom of one of the tabs in the camera tracker. 1 unit in Nuke 3D space = 1 cm The tracker will take care off scale, translation and rotation, just as long as you can approximate the tracker to an item of the same depth and position as the fire element. We know that to refine a camera track for projections, we need to set a ground plane, x and y axes and scale distance. Takes a single track and turns it into a 3D translate or rotational move. From advanced node-based compositing, to 3D tracking and model building, to editorial and conform, the Nuke range can scale to suit your needs. They are applicable to both Auto Tracks and User Tracks. Track Threshold. You can set a scale constraint between points: https://learn.foundry.com/nuke/12.1/content/comp_environment/cameratracker/creating_contraints.html. Add a FBX Exporter Node 3. ... rotate and scale your scene so it make more sense before outputting a camera (if it's not link by expression) View Entire Discussion (1 Comments) More posts from the vfx community. How to Composite 2D VFX Stock Footage Into a 3D Scene In Nuke Nuke tutorial - Rotoscope Techniques - How to roto using a Camera tracker and a Project 3D Subscribe to see more videos and leave a comment! That was okay till Nuke 9.08, in Nuke 9.08 as turned out to be - if node is not connected to the main tree of the gizmo it is not evaluated (at least for me the solution was just to connect the bloody node to the tree with a merge node and set the mix value to zero) maybe you can send me a group that errors and i will have a look cheers For example, the Auto Tracks located on the window panes could easily be measured. I have had to do a few shots with 2 1/2 D tracking and the reality is they looked fine and I got them done in a lot less time that I wasted 3D tracking to get an unusable track. Floor tracker points align with the viewer ground grid now, so should a 3D card, which we will add as a dummy for the floor. Posted by 19 days ago. 3D Track a scene, which can be exported to a third party software such as AUTODESK MAYA. 2) Create a WriteGeo node and export your scene (or just your camera) as an alembic file (.abc), this is really important. 5. They are applicable to both Auto Tracks and User Tracks. The camera tracker is a "need-to-know" for any Nuke compositor and one of the biggest time-savers in the program’s arsenal. Press J to jump to the feed. Camera tracker (and matchmoving as a whole) allows you to extract the position and characteristics of a camera from its sequence, as well as the 3D positions of features within the scene. The image shows a point cloud and camera with two User Tracks marked out. Scale distance (set scale dimension to the same as a known distance within the scene. Right-click a highlighted point and select. Or, if the camera is already linked, bake the camera animation into keyframes. Operation modes Camera Tracker can be run fully automated, or you can use its incredibly in-depth configurable options to tweak everything from tracking and validation through to solving and object creation. The problem is that the scene is tiny. Lens Distortion: Set to Unknown Lens and tick Undistort Input. Scene constraints enable you to use known distances, measured on set, to scale a scene more accurately. GeoTracker is a plugin for Foundry Nuke that can be used for tracking rigid and deformable 3D models without the usual hassle associated with match-moving job. It works fine except that the scaling of the scene is completely off. Remember, on 3dMax, Z is up and Nuke is measured in milimetters. But at the same time reducing it will cause lower tracking quality and more tracking data. For most project the default 0.7 is useful. Set this to tell Nuke when throws out the track point. Otherwise as above you can use survey points which starts getting a bit more complicated and trickier to do within Nuke but can be done. of AE's 3D space, but the problem persists. Hi all, Ive created a camera tracked file for C4D and set up a front-projected background with my video footage on it. Imagine a computer generated robot walking across a street or standing on a building while the camera is moving, there would be a need for accurate 3D camera tracking software. A connecting line, labled dist. This will allow you make a full CGI scene. Nuke to Maya should set this to 10 I'm going to guess C4D is the same. What is true is that Nuke has no definition of scale units, so you have to choose for yourself and set the unit accordingly on import into other applications. In my case I used a reformat set to scale and no resize and the amount was 1.09. This is not correct. NukeX - Camera tracker scene+ places my camera beneath the floor. Create a 3d scene that supports particles in Nuke (Such as creating a snowy scene, or rainy scene) These techniques are absolutely vital to learn if you wish to pursue becoming a better compositors. All the track points match up nicely. In this case a paving slab of 40mm) Magenta markers shown below in the 3D view, indicate the camera tracker markers that were selected on the ground plane. The image shows a point cloud and camera with two User Tracks marked out. CameraTracker (NukeX and Nuke Studio only) is designed to provide an integrated camera … 1. In Cinema 4D I've managed to solve similar problems by scaling the scene. New comments cannot be posted and votes cannot be cast. If you reduce it, it won’t throw out the track point if it is short. 192. The measured distance is now taken into account when you adjust the Scene Transform controls. 1) Once your 3D camera tracking done, create a new camera with the camera tracker node.Be sure to uncheck the box “Link output”. From advanced node-based compositing, to 3D tracking and model building, to editorial and conform, the Nuke range can scale to suit your needs. 'S 3D camera Tracker - track -- > solve ( really good solve 0.66 ) 2 cube and use to. Entire range reconstructs the original scene software such as AUTODESK Maya, measured on set, to scale and resize! Original live-action camera move and generates a point for a particle emmiter you reduce it, it won t... Shows a point for a particle emmiter I 'm doing a nuke camera tracker scene scale track Nuke. Measured distance is now taken into account when you adjust the scene use! ) is designed to provide an integrated camera … Tracker Setup provide an integrated camera Tracker... 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