1. A simple tutorial in Nuke on how to clone from one area of a moving image to another, using 2D tracking and stabilization, and basic compositing. Uses a shot from The Hotdog Cycle, produced by The Last Quest in Seattle.


    This video is also on my website in a post about cleanup work in visual effects.

    Update: 2011-05-23
    I have learned a lot since I made this tutorial, and wanted to point out something. The method I am using to stabilize the plate and then invert the stabilization will result in a loss of quality.

    Stabilizing results in a "filter hit" for the entire image, and then inverting the stabilization creates another filter hit. A filter hit is when a 2D transformation is applied to the image. In Nuke you have the choice between many different filtering methods, such as Cubic, Riffman, Parzen, etcetera. They vary in sharpening, but all will degrade your image.

    A better approach would be to create a tracker, or bring in a cornerpin track from Mocha, but matchmove only the part of the image you are altering on top of the original plate. This will result in the least image degradation.

    There are a lot of other things about this little tutorial I would do differently now also. The new "clone from source" feature of roto nodes in Nuke 6 would make doing this technique possible in a lot fewer nodes than I am using.

    Perhaps I will make some better tutorials when I have time soon!

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