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added support of CV_32F & CV_TM_SQDIFF into gpu::matchTemplate

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This commit is contained in:
Alexey Spizhevoy
2010-12-08 13:12:12 +00:00
parent 40304721a7
commit b1c5b9293e
3 changed files with 112 additions and 43 deletions
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49
modules/gpu/src/cuda/match_template.cu
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@@ -50,6 +50,7 @@ using namespace cv::gpu;
namespace cv { namespace gpu { namespace imgproc {
texture<unsigned char, 2> imageTex_8U;
texture<unsigned char, 2> templTex_8U;
@@ -98,6 +99,54 @@ void matchTemplate_8U_SQDIFF(const DevMem2D image, const DevMem2D templ, DevMem2
}
texture<float, 2> imageTex_32F;
texture<float, 2> templTex_32F;
__global__ void matchTemplateKernel_32F_SQDIFF(int w, int h, DevMem2Df result)
{
int x = blockDim.x * blockIdx.x + threadIdx.x;
int y = blockDim.y * blockIdx.y + threadIdx.y;
if (x < result.cols && y < result.rows)
{
float sum = 0.f;
float delta;
for (int i = 0; i < h; ++i)
{
for (int j = 0; j < w; ++j)
{
delta = tex2D(imageTex_32F, x + j, y + i) -
tex2D(templTex_32F, j, i);
sum += delta * delta;
}
}
result.ptr(y)[x] = sum;
}
}
void matchTemplate_32F_SQDIFF(const DevMem2D image, const DevMem2D templ, DevMem2Df result)
{
dim3 threads(32, 8);
dim3 grid(divUp(image.cols - templ.cols + 1, threads.x),
divUp(image.rows - templ.rows + 1, threads.y));
cudaChannelFormatDesc desc = cudaCreateChannelDesc<float>();
cudaBindTexture2D(0, imageTex_32F, image.data, desc, image.cols, image.rows, image.step);
cudaBindTexture2D(0, templTex_32F, templ.data, desc, templ.cols, templ.rows, templ.step);
imageTex_8U.filterMode = cudaFilterModePoint;
templTex_8U.filterMode = cudaFilterModePoint;
matchTemplateKernel_32F_SQDIFF<<<grid, threads>>>(templ.cols, templ.rows, result);
cudaSafeCall(cudaThreadSynchronize());
cudaSafeCall(cudaUnbindTexture(imageTex_32F));
cudaSafeCall(cudaUnbindTexture(templTex_32F));
}
__global__ void multiplyAndNormalizeSpectsKernel(int n, float scale, const cufftComplex* a,
const cufftComplex* b, cufftComplex* c)
{

12
modules/gpu/src/match_template.cpp
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@@ -61,6 +61,7 @@ namespace cv { namespace gpu { namespace imgproc
void multiplyAndNormalizeSpects(int n, float scale, const cufftComplex* a,
const cufftComplex* b, cufftComplex* c);
void matchTemplate_8U_SQDIFF(const DevMem2D image, const DevMem2D templ, DevMem2Df result);
void matchTemplate_32F_SQDIFF(const DevMem2D image, const DevMem2D templ, DevMem2Df result);
}}}
@@ -92,6 +93,14 @@ namespace
imgproc::matchTemplate_8U_SQDIFF(image, templ, result);
}
template <>
void matchTemplate<CV_32F, CV_TM_SQDIFF>(const GpuMat& image, const GpuMat& templ, GpuMat& result)
{
result.create(image.rows - templ.rows + 1, image.cols - templ.cols + 1, CV_32F);
imgproc::matchTemplate_32F_SQDIFF(image, templ, result);
}
#ifdef BLOCK_VERSION
template <>
@@ -243,7 +252,8 @@ void cv::gpu::matchTemplate(const GpuMat& image, const GpuMat& templ, GpuMat& re
typedef void (*Caller)(const GpuMat&, const GpuMat&, GpuMat&);
static const Caller callers8U[] = { ::matchTemplate<CV_8U, CV_TM_SQDIFF>, 0, 0, 0, 0, 0 };
static const Caller callers32F[] = { 0, 0, ::matchTemplate<CV_32F, CV_TM_CCORR>, 0, 0, 0 };
static const Caller callers32F[] = { ::matchTemplate<CV_32F, CV_TM_SQDIFF>, 0,
::matchTemplate<CV_32F, CV_TM_CCORR>, 0, 0, 0 };
const Caller* callers;
switch (image.type())

94
tests/gpu/src/match_template.cpp
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@@ -87,6 +87,16 @@ struct CV_GpuMatchTemplateTest: CvTest
F(cout << "gpu_block: " << clock() - t << endl;)
if (!check(dst_gold, Mat(dst), 5 * h * w * 1e-5f)) return;
gen(image, n, m, CV_32F);
gen(templ, h, w, CV_32F);
F(t = clock();)
matchTemplate(image, templ, dst_gold, CV_TM_SQDIFF);
F(cout << "cpu:" << clock() - t << endl;)
F(t = clock();)
gpu::matchTemplate(gpu::GpuMat(image), gpu::GpuMat(templ), dst, CV_TM_SQDIFF);
F(cout << "gpu_block: " << clock() - t << endl;)
if (!check(dst_gold, Mat(dst), 0.25f * h * w * 1e-5f)) return;
gen(image, n, m, CV_32F);
gen(templ, h, w, CV_32F);
F(t = clock();)
@@ -136,48 +146,48 @@ struct CV_GpuMatchTemplateTest: CvTest
return true;
}
void match_template_naive_SQDIFF(const Mat& a, const Mat& b, Mat& c)
{
c.create(a.rows - b.rows + 1, a.cols - b.cols + 1, CV_32F);
for (int i = 0; i < c.rows; ++i)
{
for (int j = 0; j < c.cols; ++j)
{
float delta;
float sum = 0.f;
for (int y = 0; y < b.rows; ++y)
{
const unsigned char* arow = a.ptr(i + y);
const unsigned char* brow = b.ptr(y);
for (int x = 0; x < b.cols; ++x)
{
delta = (float)(arow[j + x] - brow[x]);
sum += delta * delta;
}
}
c.at<float>(i, j) = sum;
}
}
}
//void match_template_naive_SQDIFF(const Mat& a, const Mat& b, Mat& c)
//{
// c.create(a.rows - b.rows + 1, a.cols - b.cols + 1, CV_32F);
// for (int i = 0; i < c.rows; ++i)
// {
// for (int j = 0; j < c.cols; ++j)
// {
// float delta;
// float sum = 0.f;
// for (int y = 0; y < b.rows; ++y)
// {
// const unsigned char* arow = a.ptr(i + y);
// const unsigned char* brow = b.ptr(y);
// for (int x = 0; x < b.cols; ++x)
// {
// delta = (float)(arow[j + x] - brow[x]);
// sum += delta * delta;
// }
// }
// c.at<float>(i, j) = sum;
// }
// }
//}
void match_template_naive_CCORR(const Mat& a, const Mat& b, Mat& c)
{
c.create(a.rows - b.rows + 1, a.cols - b.cols + 1, CV_32F);
for (int i = 0; i < c.rows; ++i)
{
for (int j = 0; j < c.cols; ++j)
{
float sum = 0.f;
for (int y = 0; y < b.rows; ++y)
{
const float* arow = a.ptr<float>(i + y);
const float* brow = b.ptr<float>(y);
for (int x = 0; x < b.cols; ++x)
sum += arow[j + x] * brow[x];
}
c.at<float>(i, j) = sum;
}
}
}
//void match_template_naive_CCORR(const Mat& a, const Mat& b, Mat& c)
//{
// c.create(a.rows - b.rows + 1, a.cols - b.cols + 1, CV_32F);
// for (int i = 0; i < c.rows; ++i)
// {
// for (int j = 0; j < c.cols; ++j)
// {
// float sum = 0.f;
// for (int y = 0; y < b.rows; ++y)
// {
// const float* arow = a.ptr<float>(i + y);
// const float* brow = b.ptr<float>(y);
// for (int x = 0; x < b.cols; ++x)
// sum += arow[j + x] * brow[x];
// }
// c.at<float>(i, j) = sum;
// }
// }
//}
} match_template_test;