Chiebot-Mirror
/
opencv
mirror of https://github.com/opencv/opencv.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #805 from pengx17:master_canny_fix

Browse Source
pull/803/merge
Vadim Pisarevsky 12 years ago committed by OpenCV Buildbot
parent 5a2c5227f4 5eb551b340
commit c019d06de3
4 changed files with 20 additions and 245 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 34
      modules/ocl/include/opencv2/ocl.hpp
  2. 30
      modules/ocl/src/canny.cpp
  3. 182
      modules/ocl/src/opencl/imgproc_canny.cl
  4. 19
      modules/ocl/test/test_canny.cpp

34
modules/ocl/include/opencv2/ocl.hpp
Unescape View File

@ -861,68 +861,36 @@ namespace cv
///////////////////////////////////////////// Canny /////////////////////////////////////////////
struct CV_EXPORTS CannyBuf;
//! compute edges of the input image using Canny operator
// Support CV_8UC1 only
CV_EXPORTS void Canny(const oclMat &image, oclMat &edges, double low_thresh, double high_thresh, int apperture_size = 3, bool L2gradient = false);
CV_EXPORTS void Canny(const oclMat &image, CannyBuf &buf, oclMat &edges, double low_thresh, double high_thresh, int apperture_size = 3, bool L2gradient = false);
CV_EXPORTS void Canny(const oclMat &dx, const oclMat &dy, oclMat &edges, double low_thresh, double high_thresh, bool L2gradient = false);
CV_EXPORTS void Canny(const oclMat &dx, const oclMat &dy, CannyBuf &buf, oclMat &edges, double low_thresh, double high_thresh, bool L2gradient = false);
struct CV_EXPORTS CannyBuf
{
CannyBuf() : counter(NULL) {}
~CannyBuf()
{
release();
}
explicit CannyBuf(const Size &image_size, int apperture_size = 3) : counter(NULL)
{
create(image_size, apperture_size);
}
CannyBuf(const oclMat &dx_, const oclMat &dy_);
void create(const Size &image_size, int apperture_size = 3);
void release();
oclMat dx, dy;
oclMat dx_buf, dy_buf;
oclMat edgeBuf;
oclMat magBuf, mapBuf;
oclMat trackBuf1, trackBuf2;
void *counter;
Ptr<FilterEngine_GPU> filterDX, filterDY;
};
///////////////////////////////////////// Hough Transform /////////////////////////////////////////

30
modules/ocl/src/canny.cpp
Unescape View File

@ -86,7 +86,8 @@ void cv::ocl::CannyBuf::create(const Size &image_size, int apperture_size)
filterDY = createDerivFilter_GPU(CV_8U, CV_32S, 0, 1, apperture_size, BORDER_REPLICATE);
}
}
ensureSizeIsEnough(image_size.height + 2, image_size.width + 2, CV_32FC1, edgeBuf);
ensureSizeIsEnough(image_size.height + 2, image_size.width + 2, CV_32FC1, magBuf);
ensureSizeIsEnough(image_size.height + 2, image_size.width + 2, CV_32FC1, mapBuf);
ensureSizeIsEnough(1, image_size.width * image_size.height, CV_16UC2, trackBuf1);
ensureSizeIsEnough(1, image_size.width * image_size.height, CV_16UC2, trackBuf2);
@ -107,10 +108,15 @@ void cv::ocl::CannyBuf::release()
dy.release();
dx_buf.release();
dy_buf.release();
edgeBuf.release();
magBuf.release();
mapBuf.release();
trackBuf1.release();
trackBuf2.release();
openCLFree(counter);
if(counter)
{
openCLFree(counter);
counter = NULL;
}
}
namespace cv
@ -140,13 +146,13 @@ namespace
void CannyCaller(CannyBuf &buf, oclMat &dst, float low_thresh, float high_thresh)
{
using namespace ::cv::ocl::canny;
calcMap_gpu(buf.dx, buf.dy, buf.edgeBuf, buf.edgeBuf, dst.rows, dst.cols, low_thresh, high_thresh);
calcMap_gpu(buf.dx, buf.dy, buf.magBuf, buf.mapBuf, dst.rows, dst.cols, low_thresh, high_thresh);
edgesHysteresisLocal_gpu(buf.edgeBuf, buf.trackBuf1, buf.counter, dst.rows, dst.cols);
edgesHysteresisLocal_gpu(buf.mapBuf, buf.trackBuf1, buf.counter, dst.rows, dst.cols);
edgesHysteresisGlobal_gpu(buf.edgeBuf, buf.trackBuf1, buf.trackBuf2, buf.counter, dst.rows, dst.cols);
edgesHysteresisGlobal_gpu(buf.mapBuf, buf.trackBuf1, buf.trackBuf2, buf.counter, dst.rows, dst.cols);
getEdges_gpu(buf.edgeBuf, dst, dst.rows, dst.cols);
getEdges_gpu(buf.mapBuf, dst, dst.rows, dst.cols);
}
}
@ -169,20 +175,20 @@ void cv::ocl::Canny(const oclMat &src, CannyBuf &buf, oclMat &dst, double low_th
dst.setTo(Scalar::all(0));
buf.create(src.size(), apperture_size);
buf.edgeBuf.setTo(Scalar::all(0));
buf.magBuf.setTo(Scalar::all(0));
if (apperture_size == 3)
{
calcSobelRowPass_gpu(src, buf.dx_buf, buf.dy_buf, src.rows, src.cols);
calcMagnitude_gpu(buf.dx_buf, buf.dy_buf, buf.dx, buf.dy, buf.edgeBuf, src.rows, src.cols, L2gradient);
calcMagnitude_gpu(buf.dx_buf, buf.dy_buf, buf.dx, buf.dy, buf.magBuf, src.rows, src.cols, L2gradient);
}
else
{
buf.filterDX->apply(src, buf.dx);
buf.filterDY->apply(src, buf.dy);
calcMagnitude_gpu(buf.dx, buf.dy, buf.edgeBuf, src.rows, src.cols, L2gradient);
calcMagnitude_gpu(buf.dx, buf.dy, buf.magBuf, src.rows, src.cols, L2gradient);
}
CannyCaller(buf, dst, static_cast<float>(low_thresh), static_cast<float>(high_thresh));
}
@ -207,8 +213,8 @@ void cv::ocl::Canny(const oclMat &dx, const oclMat &dy, CannyBuf &buf, oclMat &d
buf.dx = dx;
buf.dy = dy;
buf.create(dx.size(), -1);
buf.edgeBuf.setTo(Scalar::all(0));
calcMagnitude_gpu(buf.dx, buf.dy, buf.edgeBuf, dx.rows, dx.cols, L2gradient);
buf.magBuf.setTo(Scalar::all(0));
calcMagnitude_gpu(buf.dx, buf.dy, buf.magBuf, dx.rows, dx.cols, L2gradient);
CannyCaller(buf, dst, static_cast<float>(low_thresh), static_cast<float>(high_thresh));
}

182
modules/ocl/src/opencl/imgproc_canny.cl
Unescape View File

@ -360,188 +360,6 @@ __kernel
}
}
// non local memory version
__kernel
void calcMap_2
(
__global const int * dx,
__global const int * dy,
__global const float * mag,
__global int * map,
int rows,
int cols,
float low_thresh,
float high_thresh,
int dx_step,
int dx_offset,
int dy_step,
int dy_offset,
int mag_step,
int mag_offset,
int map_step,
int map_offset
)
{
dx_step /= sizeof(*dx);
dx_offset /= sizeof(*dx);
dy_step /= sizeof(*dy);
dy_offset /= sizeof(*dy);
mag_step /= sizeof(*mag);
mag_offset /= sizeof(*mag);
map_step /= sizeof(*map);
map_offset /= sizeof(*map);
int gidx = get_global_id(0);
int gidy = get_global_id(1);
if(gidy < rows && gidx < cols)
{
int x = dx[gidx + gidy * dx_step];
int y = dy[gidx + gidy * dy_step];
const int s = (x ^ y) < 0 ? -1 : 1;
const float m = mag[gidx + 1 + (gidy + 1) * mag_step];
x = abs(x);
y = abs(y);
// 0 - the pixel can not belong to an edge
// 1 - the pixel might belong to an edge
// 2 - the pixel does belong to an edge
int edge_type = 0;
if(m > low_thresh)
{
const int tg22x = x * TG22;
const int tg67x = tg22x + (x << (1 + CANNY_SHIFT));
y <<= CANNY_SHIFT;
if(y < tg22x)
{
if(m > mag[gidx + (gidy + 1) * mag_step] && m >= mag[gidx + 2 + (gidy + 1) * mag_step])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
else if (y > tg67x)
{
if(m > mag[gidx + 1 + gidy* mag_step] && m >= mag[gidx + 1 + (gidy + 2) * mag_step])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
else
{
if(m > mag[gidx + 1 - s + gidy * mag_step] && m > mag[gidx + 1 + s + (gidy + 2) * mag_step])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
}
map[gidx + 1 + (gidy + 1) * map_step] = edge_type;
}
}
// [256, 1, 1] threaded, local memory version
__kernel
void calcMap_3
(
__global const int * dx,
__global const int * dy,
__global const float * mag,
__global int * map,
int rows,
int cols,
float low_thresh,
float high_thresh,
int dx_step,
int dx_offset,
int dy_step,
int dy_offset,
int mag_step,
int mag_offset,
int map_step,
int map_offset
)
{
dx_step /= sizeof(*dx);
dx_offset /= sizeof(*dx);
dy_step /= sizeof(*dy);
dy_offset /= sizeof(*dy);
mag_step /= sizeof(*mag);
mag_offset /= sizeof(*mag);
map_step /= sizeof(*map);
map_offset /= sizeof(*map);
__local float smem[18][18];
int lidx = get_local_id(0) % 16;
int lidy = get_local_id(0) / 16;
int grp_pix = get_global_id(0); // identifies which pixel is processing currently in the target block
int grp_ind = get_global_id(1); // identifies which block of pixels is currently processing
int grp_idx = (grp_ind % (cols/16)) * 16;
int grp_idy = (grp_ind / (cols/16)) * 16; //(grp_ind / (cols/16)) * 16
int gidx = grp_idx + lidx;
int gidy = grp_idy + lidy;
int tid = get_global_id(0) % 256;
int lx = tid % 18;
int ly = tid / 18;
if(ly < 14)
{
smem[ly][lx] = mag[grp_idx + lx + (grp_idy + ly) * mag_step];
}
if(ly < 4 && grp_idy + ly + 14 <= rows && grp_idx + lx <= cols)
{
smem[ly + 14][lx] = mag[grp_idx + lx + (grp_idy + ly + 14) * mag_step];
}
barrier(CLK_LOCAL_MEM_FENCE);
if(gidy < rows && gidx < cols)
{
int x = dx[gidx + gidy * dx_step];
int y = dy[gidx + gidy * dy_step];
const int s = (x ^ y) < 0 ? -1 : 1;
const float m = smem[lidy + 1][lidx + 1];
x = abs(x);
y = abs(y);
// 0 - the pixel can not belong to an edge
// 1 - the pixel might belong to an edge
// 2 - the pixel does belong to an edge
int edge_type = 0;
if(m > low_thresh)
{
const int tg22x = x * TG22;
const int tg67x = tg22x + (x << (1 + CANNY_SHIFT));
y <<= CANNY_SHIFT;
if(y < tg22x)
{
if(m > smem[lidy + 1][lidx] && m >= smem[lidy + 1][lidx + 2])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
else if (y > tg67x)
{
if(m > smem[lidy][lidx + 1]&& m >= smem[lidy + 2][lidx + 1])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
else
{
if(m > smem[lidy][lidx + 1 - s]&& m > smem[lidy + 2][lidx + 1 + s])
{
edge_type = 1 + (int)(m > high_thresh);
}
}
}
map[gidx + 1 + (gidy + 1) * map_step] = edge_type;
}
}
#undef CANNY_SHIFT
#undef TG22

19
modules/ocl/test/test_canny.cpp
Unescape View File

@ -45,7 +45,6 @@
#include "precomp.hpp"
#ifdef HAVE_OPENCL
#define SHOW_RESULT 0
////////////////////////////////////////////////////////
// Canny
@ -59,13 +58,10 @@ PARAM_TEST_CASE(Canny, AppertureSize, L2gradient)
bool useL2gradient;
cv::Mat edges_gold;
//std::vector<cv::ocl::Info> oclinfo;
virtual void SetUp()
{
apperture_size = GET_PARAM(0);
useL2gradient = GET_PARAM(1);
//int devnums = getDevice(oclinfo);
//CV_Assert(devnums > 0);
}
};
@ -83,26 +79,13 @@ TEST_P(Canny, Accuracy)
cv::ocl::oclMat edges;
cv::ocl::Canny(ocl_img, edges, low_thresh, high_thresh, apperture_size, useL2gradient);
char filename [100];
sprintf(filename, "G:/Valve_edges_a%d_L2Grad%d.jpg", apperture_size, (int)useL2gradient);
cv::Mat edges_gold;
cv::Canny(img, edges_gold, low_thresh, high_thresh, apperture_size, useL2gradient);
#if SHOW_RESULT
cv::Mat edges_x2, ocl_edges(edges);
edges_x2.create(edges.rows, edges.cols * 2, edges.type());
edges_x2.setTo(0);
cv::add(edges_gold, cv::Mat(edges_x2, cv::Rect(0, 0, edges_gold.cols, edges_gold.rows)), cv::Mat(edges_x2, cv::Rect(0, 0, edges_gold.cols, edges_gold.rows)));
cv::add(ocl_edges, cv::Mat(edges_x2, cv::Rect(edges_gold.cols, 0, edges_gold.cols, edges_gold.rows)), cv::Mat(edges_x2, cv::Rect(edges_gold.cols, 0, edges_gold.cols, edges_gold.rows)));
cv::namedWindow("Canny result (left: cpu, right: ocl)");
cv::imshow("Canny result (left: cpu, right: ocl)", edges_x2);
cv::waitKey();
#endif //OUTPUT_RESULT
EXPECT_MAT_SIMILAR(edges_gold, edges, 1e-2);
}
INSTANTIATE_TEST_CASE_P(GPU_ImgProc, Canny, testing::Combine(
INSTANTIATE_TEST_CASE_P(OCL_ImgProc, Canny, testing::Combine(
testing::Values(AppertureSize(3), AppertureSize(5)),
testing::Values(L2gradient(false), L2gradient(true))));
#endif
Write Preview
Loading…
Cancel
Save