It reconstructs the original live-action camera move and generates a point cloud, 3D reference points located in the scene. Scene constraints enable you to use known distances, measured on set, to scale a scene more accurately. 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?) 1 unit in Nuke 3D space = 1 cm 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. Set this to tell Nuke when throws out the track point. The problem is that the scene is tiny. 3D Track a scene, which can be exported to a third party software such as AUTODESK MAYA. 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. 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. 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. Lens Distortion: Set to Unknown Lens and tick Undistort Input. More frames will take longer but often give better results because we get more information. A connecting line, labled dist. This will allow you make a full CGI scene. The tab also contains the Scale knob which you can use to change the model’s scale. They are applicable to both Auto Tracks and User Tracks. The unit of measure used is up to you, because Nuke equates any value as being equal to one unit in 3D space. 5. Nuke's 3D Camera Tracker is a powerful tool that allows you to do 3D matchmove shots with live-action clips. 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. For example, the Auto Tracks located on the window panes could easily be measured. ... 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. Using NukeX’s Camera Tracker we’ll recreate an aerial camera from footage, getting the camera into Maya, and using Embergen and Redshift to add volumetric FX to the shot.. GeoTracker makes tracking tasks much easier, so what usually have been done by a team of motion tracking specialists can be done by one of them and with less time. The image shows User Tracks, but the same workflow applies to Auto Tracks. 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. Right-click a highlighted point and select. Breakdown / BTS. Is there some way to scale the scene correctly in Nuke? Scene constraints enable you to use known distances, measured on set, to scale a scene more accurately. The amount you increase the camera scale should equal the size you increase the resolution for the overscan in Nuke. NukeX - Camera tracker scene+ places my camera beneath the floor. There is a depth option for manually adjusting the z of the move, as you can only get x,y from a single track. 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. 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. First of all, make the 3dtrack at Nuke. You can set a scale constraint between points: https://learn.foundry.com/nuke/12.1/content/comp_environment/cameratracker/creating_contraints.html. 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. 1. For most project the default 0.7 is useful. 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. We will also add a dummy 3D cube and use it to evaluate the scene scale. Posted by 19 days ago. A quick and dirty camera tracker. Note: changing the scale doesn’t bring visual changes in 2D Viewer Mode as object not only becomes bigger or smaller, but also move further or closer to the camera preserving projection to the image plane. Takes a single track and turns it into a 3D translate or rotational move. Nuke tutorial - Rotoscope Techniques - How to roto using a Camera tracker and a Project 3D Subscribe to see more videos and leave a comment! Nuke to Maya should set this to 10 I'm going to guess C4D is the same. 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. Press question mark to learn the rest of the keyboard shortcuts, https://learn.foundry.com/nuke/12.1/content/comp_environment/cameratracker/creating_contraints.html. 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. 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. 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 1, is drawn in the Viewer. 2) Create a WriteGeo node and export your scene (or just your camera) as an alembic file (.abc), this is really important. The blue square represents one unit of measure, so the smaller squares represent one tenth of that unit. Camera Tracker - Track --> Solve (really good solve 0.66) 2. It works fine except that the scaling of the scene is completely off. Range: Global is the range of Project Settings Use Custom if you don’t want to track the entire range. The image shows a point cloud and camera with two User Tracks marked out. Everything is super small. Track Threshold. 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. of AE's 3D space, but the problem persists. New comments cannot be posted and votes cannot be cast. Add a FBX Exporter Node 3. This is not correct. 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. Remember, on 3dMax, Z is up and Nuke is measured in milimetters. If you reduce it, it won’t throw out the track point if it is short. They are applicable to both Auto Tracks and User Tracks. You can then use that information to add 3D objects to the original 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. 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 Cinema 4D I've managed to solve similar problems by scaling the scene. From advanced node-based compositing, to 3D tracking and model building, to editorial and conform, the Nuke range can scale to suit your needs. The unit of measure used is up to you, because Nuke equates any value as being equal to one unit in 3D space. 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. Tracker Setup. The measured distance is now taken into account when you adjust the Scene Transform controls. The camera tracker is a "need-to-know" for any Nuke compositor and one of the biggest time-savers in the program’s arsenal. 192. We're here to help with your Nuke problems, critique your pieces, and sometimes provide the sickest Nuke vfx breakdowns. 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 … Useful for tracking a point for a particle emmiter. 1) Once your 3D camera tracking done, create a new camera with the camera tracker node.Be sure to uncheck the box “Link output”. Camera Tracker Tutorial in Nuke for VFX, Exporting to Maya, Adding FX. Nuke to Maya should set this to 10 I'm going to guess C4D is the same. So, if you measured on set in meters, one small square could be equal to a meter, centimeter, or millimeter. I attach here some work in progress, a Bus Stop signal modeled with Max into my real life scene, and the two ways to get it. And this version also has a scene scale. In my case I used a reformat set to scale and no resize and the amount was 1.09. CameraTracker (NukeX and Nuke Studio only) is designed to provide an integrated camera … But at the same time reducing it will cause lower tracking quality and more tracking data. Camera Tracker. All the track points match up nicely. Press J to jump to the feed. I'm doing a camera track in Nuke that I then want to import to Cinema 4D. We know that to refine a camera track for projections, we need to set a ground plane, x and y axes and scale distance. The image shows a point cloud and camera with two User Tracks marked out. From advanced node-based compositing, to 3D tracking and model building, to editorial and conform, the Nuke range can scale to suit your needs. Scale distance (set scale dimension to the same as a known distance within the scene. part of the real footage with the correct position, scale, and orientation in relation to the photographed objects in the scene. 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