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Building the 3D scene

Building the 3D scene provides you with in-depth training on Video. Taught by Steve Wright as part o… Show More

Nuke 6.3 New Features

with Steve Wright

Video: Building the 3D scene

Building the 3D scene provides you with in-depth training on Video. Taught by Steve Wright as part of the Nuke 6.3 New Features
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  1. 2m 10s
    1. Welcome
      1m 50s
    2. Using the exercise files
  2. 9m 0s
    1. Building the mesh
      4m 12s
    2. Projecting images on the mesh
      4m 48s
  3. 26m 6s
    1. Exploring basic setup
      6m 21s
    2. Using camera track points
      10m 5s
    3. Understanding how to do a corner pin
      9m 40s
  4. 7m 22s
    1. Demoing the PointsTo3D node
    2. Using the PointsTo3D node
      6m 37s
  5. 15m 28s
    1. Setting the locators
      5m 4s
    2. Keyframing the locators
      2m 30s
    3. Doing the camera solve
      5m 34s
    4. Creating 3D cards
      2m 20s
  6. 5m 27s
    1. Working with the GeoSelect node
      5m 27s
  7. 8m 58s
    1. Understanding the Displacement node
      5m 19s
    2. Working with the ScanLineRender settings
      3m 39s
  8. 8m 49s
    1. Using the AudioRead node
      8m 49s
  9. 7m 44s
    1. Deep compositing briefing
      7m 44s
  10. 32m 55s
    1. CameraTracker overview
      7m 3s
    2. Tracking the scene
      4m 48s
    3. Solving the camera
      5m 28s
    4. Building the 3D scene
      6m 48s
    5. Adding 3D geometry
      8m 48s
  11. 9m 18s
    1. Tracking the scene
      4m 52s
    2. Filtering the point cloud
      4m 26s
  12. 19m 59s
    1. Analyzing the image
      8m 5s
    2. Exploring three workflows
      7m 18s
    3. Using the STMap node
      4m 36s
  13. 19m 41s
    1. Modeling new 3D geometry
      6m 46s
    2. Lining up 3D objects
      3m 16s
    3. Building the whole set
      7m 4s
    4. Exporting Modeler geometry
      2m 35s
  14. 1h 0m
    1. Exploring the PlanarTracker workflow
      6m 47s
    2. Correcting tracking drift
      2m 40s
    3. Coping with tracking occlusions
      6m 30s
    4. Tracking with multiple shapes
      6m 34s
    5. Tracking out-of-frame targets
      5m 32s
    6. Placing the planar surface out of frame
      4m 35s
    7. Exporting: corner pin (relative)
      4m 24s
    8. Exporting: Tracker node
      4m 24s
    9. Exporting: corner pin (stabilize)
      5m 15s
    10. Adding a roto shape to a track layer
      3m 42s
    11. Adding multiple roto shapes to a track layer
      3m 24s
    12. Using the mask input
      6m 40s
  15. 46m 20s
    1. Using the ParticleEmitter node
      4m 26s
    2. Creating particles
      4m 42s
    3. Adding emitters
      5m 59s
    4. Adding forces
      8m 18s
    5. Bouncing particles
      5m 28s
    6. Changing particle appearance
      7m 21s
    7. Adding streaks
      5m 42s
    8. Setting streak attributes
      4m 24s

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Building the 3D scene
Video Duration: 6m 48s 4h 39m Appropriate for all


Building the 3D scene provides you with in-depth training on Video. Taught by Steve Wright as part of the Nuke 6.3 New Features

View Course Description

This course reviews the Nuke 6.3 tools and performance enhancements that make keying, motion tracking, color correction, and 3D compositing in Nuke more powerful than ever. Author Steve Wright covers the introduction of 3D particles, the enhanced spline and grid warping, the all-new planar tracker, an audio scratch track for matching audio cues to effects, and a briefing on deep compositing, the powerful new method of working with deep images.

Nuke 6.3 New Features was created and produced by Steve Wright. We are honored to host his material in the library.

Topics include:
  • What's new in Nuke 6.3
  • 3D tracking in the Camera Tracker
  • Creating a cloud with the Point Cloud Generator node
  • Building meshes with the PoissonMesh Generator node
  • Understanding the Reconcile3D node
  • Demoing the PointsTo3D node
  • Introducing the Modeler node
  • Aligning 2D and 3D points
  • Displacing with the Displacement shader
  • Adding audio
  • Working with the Planar Tracker
  • Working with 3D particle systems in Nuke 6.3

Building the 3D scene

With the tracking done and the camera solved with a very small solve error, we are ready to create the 3D scene. This is where the calculations for the camera and the 3D points will be turned into 3D geometry. Before we begin, there is a very important thing we have to check; that the project size matches our clip. So cursor in the node graph, type S on the keyboard to get our Project Settings tab, double-check that the full-size format matches our clip.

If they don't match, then all your camera renders are going to be the wrong size and nothing will line up. Okay, we are done with that. We close the Project Settings and open up the CameraTracker Property panel. I am going to setup the viewer, so we got a little more screen space to work with here and re-home the node graph. Okay, we are ready to create the scene, so we just click Create Scene. Nuke adds a few more nodes, we've seen these before. Here is the point cloud node, here is the 3D camera, and a little scene node to kind of pull it altogether.

To see the camera and the point clouds, we'll switch the viewer to 3D, pullout, look around, now as I said before, I'd like to have my camera a little more reasonable size for the scene. Okay, I am going to set the playhead for ping-pong and play. Okay that looks reasonable and we can look through the camera viewer here and check to see that the point cloud seems to be moving reasonably, everything seems to be in order, I'll stop this.

And again, we can confirm that our camera and our point cloud are moving correctly by compositing it over the original clip using the viewer wipe controls up here. To do that, we need to connect the viewer to the original Read node, so I'll type a 2 here, we'll switch back to the 3D view, set the viewer wipe controls for over, and we want to have the CameraTracker over the Read node. Switch your viewer back to 3D, there we go.

So I'll move the viewer wipe control over here and again, you can turn viewer gain down a bit in order to see your point clouds better and then we'll play that. And go yes, it looks like our points are tracking very nicely with the clip. Notice that the points have taken on the color of the object that they are in front of. So the points here on the floor are brown, the points on the box are dark brown, these over here are gray and then we have some white ones here on Marcy's hair.

So by texture mapping the color of the clip onto the 3D points, it helps you to align things up in 3D. Okay, we'll stop this and turn off the viewer wipe. Turn off the camera viewport lock and go back to the default view to look at the scene orientation. Now if I orbit around here and get right down on the ground plane of the 3D axis, you can see that my world is tilted.

That's because the planar tracker doesn't really know where the ground is or where the sky is or anything like that. It's all 3D points relative to a 3D camera. So there are two ways we can setup the scene orientation at alignment. First, on the CameraTracker Property panel, let's double-click on the CameraTracker to put it at the top of the Property Bin. The Scene tab, the Scene tab we can change the scale or the rotation or the translation of our scene.

Okay, I am going to undo that. The second way is to use an automatic procedure, which I personally prefer. So let's take a look at that. First, we have to set our viewer to 2D. The idea here is we are going to select at least three points to define the ground plane and then we'll tell the CameraTracker, this is the ground plane and it'll orient the point cloud and the camera for us perfectly. So, first we scrub through the shot looking for a good view of your points.

So we'll take this one, Shift this one, Shift those, Shift these. The rule is at least three points. You want them widely spread out. Once your ground points are selected, simply right mouse pop-up, ground plane>set to selected. We get the little pink dots. Notice that the selected points are yellow. So let's switch back to the 3D view and we can see we now have yellow points here, one, two, three, four, five, and that our world is now lined up with the ground plane quite nicely.

Notice, if I go back to 2D and I click to deselect, the pink points here now become pink points on the 3D side, one, two, three, four, five. So when a point is selected, it turns yellow, otherwise its default texture map color. Next, we want to orient the point cloud to make it easy to line up geometry. So I am going to take this wall and orient it to line up parallel with the Z axis.

By having our point cloud oriented to the 3D world neatly, it makes it much easier to put 3D objects into the scene. So, to do that, we'll go back in 2D, I am going to pick at least two points along the base of this wall. But first, I'll scrub through the shot, looking for my best view. Okay, so I'll pick this one and this one, making very sure that they really are along that baseboard. If they happen to be out of position, it will misorient my scene.

So, with at least two points selected, right mouse pop-up, ground plane set to Z. Now we'll go back to the 3D view. There is my two yellow points that are currently selected, and if I orbit around here, we can see that that wall is now nice and parallel to the Z axis. It does not reposition it over to the Z axis, it aligns it with the Z axis. Now that we have a properly oriented camera and point cloud, we can start adding 3D geometry to the scene.

There are currently no FAQs about Nuke 6.3 New Features.






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