Hugo Vs Lino Making

CMY to RGB

This how you can extract the channels

CMY to RGB

This set is the property of www.3drender.com

How to extract CMY channels from mattes apart from RGB with help of Nuke.
I have created a simple script using colormatrix node.

the following is the script for extracting the CMY channels

_________________________________________________________

set cut_paste_input [stack 0]
version 6.0 v1
push $cut_paste_input
Group {
name CMY
selected true
xpos -104
ypos -318
}
Input {
inputs 0
name Input1
xpos -305
ypos -203
}
Dot {
name Dot3
xpos -305
ypos -163
}
set N28350ba0 [stack 0]
Dot {
name Dot2
xpos 51
ypos 105
}
set N17e292d0 [stack 0]
ColorMatrix {
channels rgba
matrix {
{0 0 0}
{0 0 0}
{1 -2 1}
}
name ColorMatrix5
xpos 250
ypos 101
}
push $N17e292d0
ColorMatrix {
channels rgba
matrix {
{0 0 0}
{0 0 0}
{0 0 1}
}
name ColorMatrix6
xpos 17
ypos 259
}
Erode {
channels rgb
size 1.5
name Erode3
xpos 128
ypos 259
}
push $N28350ba0
Dot {
name Dot1
xpos -304
ypos 158
}
set N2849b9a0 [stack 0]
ColorMatrix {
channels rgba
matrix {
{0 0 0}
{2 -2 3}
{0 0 0}
}
name ColorMatrix2
xpos -105
ypos 154
}
push $N2849b9a0
ColorMatrix {
channels rgba
matrix {
{0 0 0}
{1 0 0}
{0 0 0}
}
name ColorMatrix1
xpos -338
ypos 325
}
Erode {
channels rgb
size 0.4
name Erode1
xpos -227
ypos 325
}
push $N28350ba0
ColorMatrix {
channels rgba
matrix {
{0 0 0}
{0 0 0}
{2 -1 -2}
}
name ColorMatrix3
xpos -54
ypos -167
}
push $N28350ba0
ColorMatrix {
channels rgba
matrix {
{1 -1 0}
{0 0 0}
{0 0 0}
}
name ColorMatrix4
xpos -287
ypos -24
}
Erode {
channels rgb
size 0.4
name Erode2
xpos -177
ypos -24
}
Constant {
inputs 0
channels rgb
format "1920 1080 0 0 1920 1080 1 HD"
name Constant1
xpos 18
ypos -136
}
Merge2 {
inputs 2+1
Bchannels none
maskChannelMask rgba.blue
invert_mask true
name Merge2
xpos -54
ypos -24
}
Merge2 {
inputs 2+1
operation screen
maskChannelMask rgba.green
invert_mask true
name Merge1
xpos -105
ypos 325
}
Merge2 {
inputs 2+1
operation screen
maskChannelMask rgba.blue
invert_mask true
name Merge3
xpos 250
ypos 325
}
Output {
name Output1
xpos 250
ypos 425
}
end_group



_____________________________________________________

copy this script and save it as .nk in notepad.
with the help of script you can convert CMY to RGB

New Lighting Challenge