Sergey Sharybin
876665ac25
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.
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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* Copyright 2012, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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* Sergey Sharybin
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*/
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#include "COM_KeyingScreenNode.h"
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#include "COM_ExecutionSystem.h"
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#include "COM_KeyingScreenOperation.h"
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extern "C" {
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#include "DNA_movieclip_types.h"
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}
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KeyingScreenNode::KeyingScreenNode(bNode *editorNode): Node(editorNode)
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{
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}
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void KeyingScreenNode::convertToOperations(ExecutionSystem *graph, CompositorContext * context)
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{
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OutputSocket *outputScreen = this->getOutputSocket(0);
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bNode *editorNode = this->getbNode();
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MovieClip *clip = (MovieClip *) editorNode->id;
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NodeKeyingScreenData *keyingscreen_data = (NodeKeyingScreenData *) editorNode->storage;
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// always connect the output image
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KeyingScreenOperation *operation = new KeyingScreenOperation();
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if (outputScreen->isConnected()) {
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outputScreen->relinkConnections(operation->getOutputSocket());
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}
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operation->setMovieClip(clip);
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operation->setTrackingObject(keyingscreen_data->tracking_object);
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operation->setFramenumber(context->getFramenumber());
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graph->addOperation(operation);
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}
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