Saturday, June 30, 2012

compositing cg with live footage Nuke

- add a little blur node on cg
- grain node with footage on cg
- edgeBlur node for sharp alpha channel
or edgeDetect node and blur node
- lenseDistortion node on cg
- mitionBlur node on cg

make seperate render per light Maya and Nuke

make a duplicate of  master layer  for each light.
enable one light for each layer.
render them
import them into Nuke.
merge them with "plus" setting.

Wednesday, June 27, 2012

create multichannel exr file

ShuffleCopy node
- input 2 is original channels and inout 1 is additional channels
- create new channel layers (rgb)
for indirect, reflection, reflaction and other passes and hook them up with rgb  input1.
Write node
- render out openEXR file.

manipulating channel(s) Nuke

Shuffle node
- shuffle channels within one input.
ShuffleCopy node
- copy channels from input 1 and add them or replace channels of input 1&2.
Copy node
- copy channel of input 1 to channel of input 2.
ChannelMerge node
- add, instersect, subtract channels from input 1&2.
Add node
- add non-existent channel of input 1 to input 2.
Remove node
- remove channel from input.

Tuesday, June 26, 2012

better motion blur

1. ScanlineRender node
    - Shader tab
    - check outputVector
2. plug into vectorBlur node

instead of raising ScanlineRender > MultiSamples > samples

python before & after render control

1. Write node
    - enter python code in python tab> before/after render

Autocrop to reduce resolution Nuke

1. insert curvetool
    - select curve type > autocrop
    - click GO!!
2. insert Crop node
    - link Crop > box to autocropdata of CurveTool node

Monday, June 25, 2012

Maya and Nuke Camera Projection Process

1. Take a picture of a building.     - 45 degree     - has flat surface - has some ground plane Maya 2. import into as a imageplane of a camera 3. set camera sensor size to match the camera used to take the image - default is 35mm (full frame) - wikipedia " sensor size" and get coversion rate. 4. creat a cube 5. match one corner of a building and a corner of a cube on the same side. 6. set center of the cube to that corner. 7. match one axis 8. create a locater at the same corner and make it cube's parent 9. match another axis. 10. scale polygon to match 11. duplicate cube and

Compositing Integration check list

1. Context
2. Tracking (make it perfect!!)
3. Color
    - Light (lighting and shadowing)
    - Depth & Atmosphere
    - Contextual
4. Sharpness
    - Focal (f. plane & dof)
    - Motion (blur, manually if possible)
    - Contextual

from fxphd,
"Nuke and Digital Environment"