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/*
-----------------------------------------------------------------------
Copyright: 2010-2018, iMinds-Vision Lab, University of Antwerp
2014-2018, CWI, Amsterdam
Contact: astra@astra-toolbox.com
Website: http://www.astra-toolbox.com/
This file is part of the ASTRA Toolbox.
The ASTRA Toolbox 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 ASTRA Toolbox 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 ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-----------------------------------------------------------------------
*/
#include "util3d.h"
#include "dims3d.h"
#include "darthelper3d.h"
#include <cassert>
namespace astraCUDA3d {
// -------------------------------------------------------------------------------------------------------------------------------------------------------------------
__global__ void devDartSmoothing(cudaPitchedPtr out, cudaPitchedPtr in, float b, SDimensions3D dims)
{
unsigned int x = threadIdx.x + 16*blockIdx.x;
unsigned int y = threadIdx.y + 16*blockIdx.y;
// Sacrifice the border pixels to simplify the implementation.
if (x > 0 && x < dims.iVolX - 1 && y > 0 && y < dims.iVolY - 1) {
float* d = (float*)in.ptr;
float* m = (float*)out.ptr;
unsigned int index;
unsigned int p = (out.pitch >> 2);
for (unsigned int z = 0; z <= dims.iVolZ-1; z++) {
float res = 0.0f;
// bottom slice
if (z > 0) {
index = ((z-1)*dims.iVolY + y) * p + x;
res += d[index-p-1] + d[index-p] + d[index-p+1] +
d[index -1] + d[index ] + d[index +1] +
d[index+p-1] + d[index+p] + d[index+p+1];
}
// top slice
if (z < dims.iVolZ-1) {
index = ((z+1)*dims.iVolY + y) * p + x;
res += d[index-p-1] + d[index-p] + d[index-p+1] +
d[index -1] + d[index ] + d[index +1] +
d[index+p-1] + d[index+p] + d[index+p+1];
}
// same slice
index = (z*dims.iVolY + y) * p + x;
res += d[index-p-1] + d[index-p] + d[index-p+1] +
d[index -1] + d[index +1] +
d[index+p-1] + d[index+p] + d[index+p+1];
// result
m[index] = (1.0f-b) * d[index] + b * 0.038461538f * res;
}
}
}
// -------------------------------------------------------------------------------------------------------------------------------------------------------------------
void dartSmoothing(float* out, const float* in, float b, unsigned int radius, SDimensions3D dims)
{
cudaPitchedPtr D_inData;
D_inData = allocateVolumeData(dims);
copyVolumeToDevice(in, D_inData, dims);
cudaPitchedPtr D_outData;
D_outData = allocateVolumeData(dims);
copyVolumeToDevice(out, D_outData, dims);
dim3 blockSize(16,16);
dim3 gridSize((dims.iVolX+15)/16, (dims.iVolY+15)/16);
devDartSmoothing<<<gridSize, blockSize>>>(D_outData, D_inData, b, dims);
copyVolumeFromDevice(out, D_outData, dims);
cudaFree(D_outData.ptr);
cudaFree(D_inData.ptr);
}
// -------------------------------------------------------------------------------------------------------------------------------------------------------------------
// CUDA function for the masking of DART with a radius == 1
__global__ void devDartMasking(cudaPitchedPtr mask, cudaPitchedPtr in, unsigned int conn, SDimensions3D dims)
{
unsigned int x = threadIdx.x + 16*blockIdx.x;
unsigned int y = threadIdx.y + 16*blockIdx.y;
// Sacrifice the border pixels to simplify the implementation.
if (x > 0 && x < dims.iVolX - 1 && y > 0 && y < dims.iVolY - 1) {
float* d = (float*)in.ptr;
float* m = (float*)mask.ptr;
unsigned int index;
unsigned int p = (in.pitch >> 2);
for (unsigned int z = 0; z <= dims.iVolZ-1; z++) {
unsigned int o2 = (z*dims.iVolY + y) * p + x;
m[o2] = 0.0f;
// bottom slice
if (z > 0) {
index = ((z-1)*dims.iVolY + y) * p + x;
if ((conn == 26 &&
(d[index-p-1] != d[o2] || d[index-p] != d[o2] || d[index-p+1] != d[o2] ||
d[index -1] != d[o2] || d[index ] != d[o2] || d[index +1] != d[o2] ||
d[index+p-1] != d[o2] || d[index+p] != d[o2] || d[index+p+1] != d[o2] ))
||
(conn == 6 && d[index] != d[o2]))
{
m[o2] = 1.0f;
continue;
}
}
// top slice
if (z < dims.iVolZ-1) {
index = ((z+1)*dims.iVolY + y) * p + x;
if ((conn == 26 &&
(d[index-p-1] != d[o2] || d[index-p] != d[o2] || d[index-p+1] != d[o2] ||
d[index -1] != d[o2] || d[index ] != d[o2] || d[index +1] != d[o2] ||
d[index+p-1] != d[o2] || d[index+p] != d[o2] || d[index+p+1] != d[o2] ))
||
(conn == 6 && d[index] != d[o2]))
{
m[o2] = 1.0f;
continue;
}
}
// other slices
index = (z*dims.iVolY + y) * p + x;
if ((conn == 26 &&
(d[index-p-1] != d[o2] || d[index-p] != d[o2] || d[index-p+1] != d[o2] ||
d[index -1] != d[o2] || d[index +1] != d[o2] ||
d[index+p-1] != d[o2] || d[index+p] != d[o2] || d[index+p+1] != d[o2] ))
||
(conn == 6 &&
( d[index-p] != d[o2] ||
d[index -1] != d[o2] || d[index +1] != d[o2] ||
d[index+p] != d[o2] )))
{
m[o2] = 1.0f;
continue;
}
}
}
}
// -------------------------------------------------------------------------------------------------------------------------------------------------------------------
void dartMasking(float* mask, const float* segmentation, unsigned int conn, unsigned int radius, unsigned int threshold, SDimensions3D dims)
{
cudaPitchedPtr D_maskData;
D_maskData = allocateVolumeData(dims);
copyVolumeToDevice(mask, D_maskData, dims);
cudaPitchedPtr D_segmentationData;
D_segmentationData = allocateVolumeData(dims);
copyVolumeToDevice(segmentation, D_segmentationData, dims);
dim3 blockSize(16,16);
dim3 gridSize((dims.iVolX+15)/16, (dims.iVolY+15)/16);
if (threshold == 1 && radius == 1)
devDartMasking<<<gridSize, blockSize>>>(D_maskData, D_segmentationData, conn, dims);
//else if (threshold > 1 && radius == 1)
// devADartMask<<<gridSize, blockSize>>>(D_maskData, D_segmentationData, conn, threshold, pitch, width, height, 1, 1);
//else if (threshold == 1 && radius > 1)
// devDartMaskRadius<<<gridSize, blockSize>>>(D_maskData, D_segmentationData, conn, radius, pitch, width, height, 1, 1);
//else
// devADartMaskRadius<<<gridSize, blockSize>>>(D_maskData, D_segmentationData, conn, radius, threshold, pitch, width, height, 1, 1);
copyVolumeFromDevice(mask, D_maskData, dims);
cudaFree(D_maskData.ptr);
cudaFree(D_segmentationData.ptr);
}
// -------------------------------------------------------------------------------------------------------------------------------------------------------------------
bool setGPUIndex(int iGPUIndex)
{
if (iGPUIndex != -1) {
cudaSetDevice(iGPUIndex);
cudaError_t err = cudaGetLastError();
// Ignore errors caused by calling cudaSetDevice multiple times
if (err != cudaSuccess && err != cudaErrorSetOnActiveProcess)
return false;
}
return true;
}
}
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