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Author Steve Wright explores the new features found in the 3D digital compositor Nuke 6. The course introduces the RotoPaint node for drawing and painting effects, the Keylight keyer for creating mattes and composites, and the SplineWarp node for warping images. The course also explains how to merge keys, animate with keyframes, and create image-based blurs. Exercise files accompany the course.
Nuke 6 New Features was created and produced by Steve Wright. We are honored to host his material in the lynda.com Online Training Library®.
So what exactly is NukeX? NukeX is an enhanced version of Nuke 6. It contains a Camera Tracker and all the support nodes you need to do camera tracking and integrate 3D into your compositing. The NukeX features require an additional license and it's assumed that only a percentage of the seats in the studio would actually be a NukeX seat. One thing to keep in mind is that all of the NukeX nodes that we see will be seen in Nuke 6. You can even drop them into your flow graph.
But they will be inactive when you try to use them. You get a message telling you that you need a NukeX license. So let's take a look at the Camera Tracker first. The Camera Tracker node is a fast, easy, camera tracking node that does bidirectional camera tracking. When you finish with your camera track, you can then solve for the camera and then create your 3D scene. The output on the Camera Tracker is a complete camera path, lens information, and a point cloud.
You can use this point cloud to line up 3D geometry. Here you can see the camera's view of the point cloud, which you use to line up your 3D geometry. Next, let's take a look at the Lens Distortion. The Lens Distortion node analyzes a clip and removes the lens distortion to create a flattened version that's ideal for 2D tracking, and for lining up 3D geometry.
It has three modes. The Image Analysis mode will actually study the clip and produce the lens distortion information. The Grid Analysis is used if you happen to have a camera chart that was photographed by the lens. With the Line Analysis mode, you can draw lines on the screen, which the node then uses to figure out what the lens distortion is. The next NukeX feature is the Depth Generator. We'll see that over here.
The Depth Generator node analyzes a clip and creates a depth map of the scene. You can see that here in the alpha channel, which is rather like a depth Z map from a 3D render. It uses camera data that was generated from the Camera Tracker node. You can use this to do like depth hazes and do 3D camera stabilization. Next are the FurnaceCore plug-ins. The FurnaceCore plug-ins are a set of plug-ins that are found over here on the tool tab. F_Align takes two different clips that were photographed from slightly different positions and aligns them together into a single clip.
F_DeFlicker2 does a deflicker operation, in case you have for example flickering HMI lights, or a shutter that's out of time. F_DeGrain removes the grain from the single still image that uses spatial frequency analysis and does not use any temporal analysis. That's what the F_DeNoise is about. F_DeNoise uses temporal or forward and backward frame comparisons to remove grain and noise from film and video clips using time as a basis.
So F_DeGrain is for a single still image, and F_DeNoise is for a moving clip. F_Kronos is the re-timer. It uses optical flow analysis in order to create very smooth speed changes on shots. F_MatchGrade is designed to make one clip match another clip by adjusting its histogram. F_MotionBlur will add motion blur to a 2D clip that doesn't have any by analyzing the motion from frame to frame. F_ReGrain is a very powerful re-graining tool.
You can sample grain structure and have it match it, or dial in the parameters yourself, or give it a sample template that it will then emboss upon your clip. F_RigRemoval is designed to make it very quick and easy to remove rig elements like boom mikes or motion control alarms from a moving clip. The F_Steadiness plug-in uses motion analysis techniques to allow you to either smooth out or completely remove any camera motion.
Several of the FurnaceCore plug- ins use motion vector analysis. The Vector Generator node allows you to calculate the motion vectors once. Then they can be used by several nodes. And that'll save you a lot of processing time. Of course, F_WireRemoval uses temporal techniques and even special techniques to remove wires out of a clip. So NukeX expands the capability of Nuke 6 by adding camera tracking and all the support you need to go with it. But don't forget, even though the NukeX nodes are visible and available, they won't operate unless you get the additional NukeX license.
Next up, let's take a look at Nuke's exciting new RotoPaint node.
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