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/*
//
// Copyright 2010 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit is free software: you can
// redistribute it and/or modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkSimpleLevelsetDevice_kernels_h_included_
#define __cmtkSimpleLevelsetDevice_kernels_h_included_
#include <cmtkconfig.h>
/** \addtogroup GPU */
//@{
namespace
cmtk
{
/// Count inside pixels and compute the sums of inside and outside pixels.
void
SimpleLevelsetDeviceUpdateInsideOutside( float* levelset /*!< Input: current levelset */, float* volume /*!< Input: image data */, const int nPixels /*!< Input: number of pixels */,
float* insideSum /*!< Output: sum of data values in the "inside" region */,
float* outsideSum /*!< Output: sum of data values in the "outside" region */,
int* nInside /*!< Output: number of pixels in the "inside" region */ );
/// Update levelset based on mean values in inside and outside regions, then threshold the result.
void
SimpleLevelsetDeviceUpdateLevelset( float* levelset /*!< Input/output: current levelset, is updated by this function */,
float* volume /*!< Input: image data */, const int nPixels /*!< Input: number of pixels */,
const float mInside /*!< Input: mean value of data in the "inside" region */,
const float mOutside /*!< Input: mean value of data in the "outside" region */,
const float ratioInOut /*!< Input: ratio of inside and outside pixel counts. */,
const float timeDelta /*!< Input: levelset evolution time constant */,
const float levelsetThreshold /*!< Input: levelset threshold */ );
} // namespace cmtk
//@}
#endif // #ifndef __cmtkSimpleLevelsetDevice_kernels_h_included_
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