Hasta La Motion!

as Ron said " Assume we are working with an image shot on a blue background. The first step the color difference method involves the creation of a new image in which this blue backing is suppressed to black. This is done by selectively substituting the green channel for the blue channel in every pixel in which the existing blue component has a greater intensity than the green component. In other words, for each pixel,

If Blue > Green
then New blue = Green
else New blue = Blue "

so Ron is telling to substitute the green channel for the blue channel and then put a condition. I tried a lot to do this in nuke. But ended scratching my head.So please all Vfx artists give it a try it will be great help.Thanks:)

I wanna roto out my character from live action footage and I thought I will as few tips here.. Since there is a lot of shaky camera movement involved I was thinking about stabilizing the plate do the roto on the character and then destabilize the plate again so it has original movement.. technically the roto should follow the character then, right?

So I used Tracker to track my footage then in transform settings I set it to be "Stabilize".

The problems that I’m having is when it comes to reintroducing the old camera movement.. I applied transform node (after the roto nodes) copied animation values from the Tracker and added *-1 in the expression tab… Now all the cam movement is back in place, however the footage that went outside the borders during the stabilization is black now… is there any way to tell NUKE to keep that footage data when it goes out of the border during the stabilization?

Or is there any better ways to do this kind of task?

What is modo?

modo® is the modern 3D software for the PC and Mac
that brings a new level of creative freedom for artists and
designers. modo® offers an intuitive combination of modeling,
painting and rendering tools in a fused workflow that is ideal
for creating 3D content and high quality imagery for a wide
variety of commercial and non-commercial applications.

Who uses modo?

Architects, package designers, industrial designers, graphic
artists, game designers, production studios, fine artists,
educators, scientists, photographers and re-touchers all use
modo.
modo can be used by anyone looking to bring the power of 3D
graphics to their art and design projects. The unique combination
of tools and a well-thought-out user interface has made modo
popular for hobbyists, as well as a wide array of professional
users.

“modo 401 continues our emphasis on making the 3D creative process as fluid as possible for designers and artists,” said Brad Peebler, president of Luxology. “This new version is packed with improvements and is clearly our biggest upgrade of modo to date.”

Modo 401 Tour Modo Product Information
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modo 401 Tank animation

This is a joint project from Rich Hurrey and Michael Blacbourn to test various aspects of modo 401. The tank is fully rigged and animated by Rich. The environment was created by Michael. The scene was rendered entirely on the modo 401 64 bit version.

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Luxology Modo Video Gallery