This week started with our How to deduct green screens in Nuke, showing us how to use the colour controls to manipulate images. Specifically, we showed how to use the Keyer and Colourspace nodes.
Keyer node gives me access to several simple keyers. You can use it to pull keys based on the input image’s,red, green, or blue channel, redscreen, greenscreen, or bluescreen, luminance (the default), saturation, or maximum and minimum values.
The Colorspace node converts images from one colorspace to another,Set the output controls to sRGB, D55, and RGB.
And then, I added the red to the highlights using the level node and I masked the keyer so that alpha acts like a mask. The colour correction will then be applied to the white areas of alpha only. I then added a blur to soften the edges of the alpha mask so that the figure and the background blend together better, and by controlling different nodes I can get different effects