mirror of
https://github.com/opencv/opencv.git
synced 2024-12-06 02:29:14 +08:00
137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
#include "perf_precomp.hpp"
|
|
|
|
using namespace std;
|
|
using namespace testing;
|
|
|
|
namespace {
|
|
|
|
DEF_PARAM_TEST_1(Image, string);
|
|
|
|
struct GreedyLabeling
|
|
{
|
|
struct dot
|
|
{
|
|
int x;
|
|
int y;
|
|
|
|
static dot make(int i, int j)
|
|
{
|
|
dot d; d.x = i; d.y = j;
|
|
return d;
|
|
}
|
|
};
|
|
|
|
struct InInterval
|
|
{
|
|
InInterval(const int& _lo, const int& _hi) : lo(-_lo), hi(_hi) {};
|
|
const int lo, hi;
|
|
|
|
bool operator() (const unsigned char a, const unsigned char b) const
|
|
{
|
|
int d = a - b;
|
|
return lo <= d && d <= hi;
|
|
}
|
|
};
|
|
|
|
GreedyLabeling(cv::Mat img)
|
|
: image(img), _labels(image.size(), CV_32SC1, cv::Scalar::all(-1)) {stack = new dot[image.cols * image.rows];}
|
|
|
|
~GreedyLabeling(){delete[] stack;}
|
|
|
|
void operator() (cv::Mat labels) const
|
|
{
|
|
labels.setTo(cv::Scalar::all(-1));
|
|
InInterval inInt(0, 2);
|
|
int cc = -1;
|
|
|
|
int* dist_labels = (int*)labels.data;
|
|
int pitch = labels.step1();
|
|
|
|
unsigned char* source = (unsigned char*)image.data;
|
|
int width = image.cols;
|
|
int height = image.rows;
|
|
|
|
for (int j = 0; j < image.rows; ++j)
|
|
for (int i = 0; i < image.cols; ++i)
|
|
{
|
|
if (dist_labels[j * pitch + i] != -1) continue;
|
|
|
|
dot* top = stack;
|
|
dot p = dot::make(i, j);
|
|
cc++;
|
|
|
|
dist_labels[j * pitch + i] = cc;
|
|
|
|
while (top >= stack)
|
|
{
|
|
int* dl = &dist_labels[p.y * pitch + p.x];
|
|
unsigned char* sp = &source[p.y * image.step1() + p.x];
|
|
|
|
dl[0] = cc;
|
|
|
|
//right
|
|
if( p.x < (width - 1) && dl[ +1] == -1 && inInt(sp[0], sp[+1]))
|
|
*top++ = dot::make(p.x + 1, p.y);
|
|
|
|
//left
|
|
if( p.x > 0 && dl[-1] == -1 && inInt(sp[0], sp[-1]))
|
|
*top++ = dot::make(p.x - 1, p.y);
|
|
|
|
//bottom
|
|
if( p.y < (height - 1) && dl[+pitch] == -1 && inInt(sp[0], sp[+image.step1()]))
|
|
*top++ = dot::make(p.x, p.y + 1);
|
|
|
|
//top
|
|
if( p.y > 0 && dl[-pitch] == -1 && inInt(sp[0], sp[-image.step1()]))
|
|
*top++ = dot::make(p.x, p.y - 1);
|
|
|
|
p = *--top;
|
|
}
|
|
}
|
|
}
|
|
|
|
cv::Mat image;
|
|
cv::Mat _labels;
|
|
dot* stack;
|
|
};
|
|
|
|
PERF_TEST_P(Image, Labeling_ConnectedComponents, Values<string>("gpu/labeling/aloe-disp.png"))
|
|
{
|
|
declare.time(1.0);
|
|
|
|
cv::Mat image = readImage(GetParam(), cv::IMREAD_GRAYSCALE);
|
|
|
|
if (runOnGpu)
|
|
{
|
|
cv::gpu::GpuMat mask;
|
|
mask.create(image.rows, image.cols, CV_8UC1);
|
|
|
|
cv::gpu::GpuMat components;
|
|
components.create(image.rows, image.cols, CV_32SC1);
|
|
|
|
cv::gpu::connectivityMask(cv::gpu::GpuMat(image), mask, cv::Scalar::all(0), cv::Scalar::all(2));
|
|
|
|
ASSERT_NO_THROW(cv::gpu::labelComponents(mask, components));
|
|
|
|
TEST_CYCLE()
|
|
{
|
|
cv::gpu::labelComponents(mask, components);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
GreedyLabeling host(image);
|
|
|
|
host(host._labels);
|
|
|
|
declare.time(1.0);
|
|
|
|
TEST_CYCLE()
|
|
{
|
|
host(host._labels);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|