Initial commit of new keying nodes
authorSergey Sharybin <sergey.vfx@gmail.com>
Tue, 29 May 2012 14:00:47 +0000 (14:00 +0000)
committerSergey Sharybin <sergey.vfx@gmail.com>
Tue, 29 May 2012 14:00:47 +0000 (14:00 +0000)
commit876665ac25a731bcf5937d4e06de7337d6e8af6a
treef8cf21ac7f6a3bbfeebe3a6ee159769062a3f656
parentf5917b15b5f603f0b9b567915b4aa93320d6dc54
Initial commit of new keying nodes

First node is called Keying Screen (Add -> Matte -> Keying Screen) and it's
aimed to resolve issues with gradients on green screens by producing image
with gradient which is later used as an input for screen color in keying nodes.

This node gets motion tracks from given movie clip and trackign object and uses
them to define color and position of points of gradient: for position marker's
position on current frame is sued, for color average color of pattern area is
used.

Gradient is calculating in the following way:
- On first step voronoi diagram is creating for given tracks.
- On second step triangulation of this diagram happens by connecting sites
  to edges which defines area this site belongs to.
- On third step gradient filling of this triangles happens. One of triangle
  vertices is colored with average track color, two rest vertoces are colored
  with average color between two neighbor sites. Current pixel's color in
  triangle is calculating as linear combination of vertices colors and
  barycentric coordinates of this pixel.

This node is implemented for both tile and legacy compositor systems.

Second node is basically a combination of several existing nodes to make keying
more straighforward and reduce spagetti mess in the compositor, but it also
ships some fresh approaches calculating matte which seems to be working better
for not actually green screens.

This node supports:
- Chroma preblur
- Dispilling
- Clip white/black
- Dilate/Erode
- Matte post blur

This node doesn't support chroma pre-blur for legacy compositor (yet).

There're still lots of stuff to be improved here, but this nodes night already
be used i think.

Some details might be found on this wiki page:
http://wiki.blender.org/index.php/User:Nazg-gul/Keying

This patch also contains some currently unused code from color math module, but
it was used for tests and might be used for tests in the future. Think it's ok
to have it in branch at least.
35 files changed:
source/blender/blenkernel/BKE_node.h
source/blender/blenkernel/intern/node.c
source/blender/blenlib/BLI_math_base.h
source/blender/blenlib/BLI_math_color.h
source/blender/blenlib/BLI_math_geom.h
source/blender/blenlib/BLI_voronoi.h [new file with mode: 0644]
source/blender/blenlib/CMakeLists.txt
source/blender/blenlib/intern/math_color.c
source/blender/blenlib/intern/math_geom.c
source/blender/blenlib/intern/voronoi.c [new file with mode: 0644]
source/blender/compositor/CMakeLists.txt
source/blender/compositor/intern/COM_Converter.cpp
source/blender/compositor/nodes/COM_KeyingNode.cpp [new file with mode: 0644]
source/blender/compositor/nodes/COM_KeyingNode.h [new file with mode: 0644]
source/blender/compositor/nodes/COM_KeyingScreenNode.cpp [new file with mode: 0644]
source/blender/compositor/nodes/COM_KeyingScreenNode.h [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingDispillOperation.cpp [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingDispillOperation.h [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingOperation.cpp [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingOperation.h [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingScreenOperation.cpp [new file with mode: 0644]
source/blender/compositor/operations/COM_KeyingScreenOperation.h [new file with mode: 0644]
source/blender/editors/space_node/drawnode.c
source/blender/makesdna/DNA_node_types.h
source/blender/makesrna/RNA_access.h
source/blender/makesrna/intern/rna_nodetree.c
source/blender/makesrna/intern/rna_nodetree_types.h
source/blender/nodes/CMakeLists.txt
source/blender/nodes/NOD_composite.h
source/blender/nodes/composite/node_composite_util.c
source/blender/nodes/composite/node_composite_util.h
source/blender/nodes/composite/nodes/node_composite_blur.c
source/blender/nodes/composite/nodes/node_composite_dilate.c
source/blender/nodes/composite/nodes/node_composite_keying.c [new file with mode: 0644]
source/blender/nodes/composite/nodes/node_composite_keyingscreen.c [new file with mode: 0644]