#include "fft_fftw.h"
+#include <unistd.h>
-#include "fft.h"
-#ifndef CUFFTW
- #include <fftw3.h>
-#else
- #include <cufftw.h>
-#endif //CUFFTW
-
-#if defined(OPENMP)
- #include <omp.h>
+#ifdef OPENMP
+#include <omp.h>
#endif
-Fftw::Fftw()
+Fftw::Fftw(){}
+
+fftwf_plan Fftw::create_plan_fwd(uint howmany) const
+{
+ cv::Mat mat_in = cv::Mat::zeros(howmany * m_height, m_width, CV_32F);
+ ComplexMat mat_out(m_height, m_width / 2 + 1, howmany);
+ float *in = reinterpret_cast<float *>(mat_in.data);
+ fftwf_complex *out = reinterpret_cast<fftwf_complex *>(mat_out.get_p_data());
+
+ int rank = 2;
+ int n[] = {(int)m_height, (int)m_width};
+ int idist = m_height * m_width, odist = m_height * (m_width / 2 + 1);
+ int istride = 1, ostride = 1;
+ int *inembed = NULL, *onembed = NULL;
+
+ return fftwf_plan_many_dft_r2c(rank, n, howmany, in, inembed, istride, idist, out, onembed, ostride, odist, FFTW_PATIENT);
+}
+
+fftwf_plan Fftw::create_plan_inv(uint howmany) const
{
+ ComplexMat mat_in(m_height, m_width / 2 + 1, howmany);
+ cv::Mat mat_out = cv::Mat::zeros(howmany * m_height, m_width, CV_32F);
+ fftwf_complex *in = reinterpret_cast<fftwf_complex *>(mat_in.get_p_data());
+ float *out = reinterpret_cast<float *>(mat_out.data);
+
+ int rank = 2;
+ int n[] = {(int)m_height, (int)m_width};
+ int idist = m_height * (m_width / 2 + 1), odist = m_height * m_width;
+ int istride = 1, ostride = 1;
+ int *inembed = nullptr, *onembed = nullptr;
+
+ return fftwf_plan_many_dft_c2r(rank, n, howmany, in, inembed, istride, idist, out, onembed, ostride, odist, FFTW_PATIENT);
}
-void Fftw::init(unsigned width, unsigned height)
+void Fftw::init(unsigned width, unsigned height, unsigned num_of_feats, unsigned num_of_scales)
{
- m_width = width;
- m_height = height;
+ Fft::init(width, height, num_of_feats, num_of_scales);
-#if defined(OPENMP)
+#if !defined(CUFFTW) && defined(BIG_BATCH)
fftw_init_threads();
+ #if defined(OPENMP)
fftw_plan_with_nthreads(omp_get_max_threads());
-#endif //OPENMP
+ #else
+ int np = sysconf(_SC_NPROCESSORS_ONLN);
+ fftw_plan_with_nthreads(np);
+ #endif
+#endif
#ifndef CUFFTW
std::cout << "FFT: FFTW" << std::endl;
#else
std::cout << "FFT: cuFFTW" << std::endl;
+#endif
+ fftwf_cleanup();
+
+ plan_f = create_plan_fwd(1);
+ plan_fw = create_plan_fwd(m_num_of_feats);
+ plan_i_1ch = create_plan_inv(1);
+
+#ifdef BIG_BATCH
+ plan_f_all_scales = create_plan_fwd(m_num_of_scales);
+ plan_fw_all_scales = create_plan_fwd(m_num_of_scales * m_num_of_feats);
+ plan_i_all_scales = create_plan_inv(m_num_of_scales);
#endif
}
-void Fftw::set_window(const cv::Mat &window)
+void Fftw::set_window(const MatDynMem &window)
{
+ Fft::set_window(window);
m_window = window;
}
-ComplexMat Fftw::forward(const cv::Mat &input)
+void Fftw::forward(const MatScales &real_input, ComplexMat &complex_result)
{
- cv::Mat complex_result(m_height, m_width / 2 + 1, CV_32FC2);
- fftwf_plan plan = fftwf_plan_dft_r2c_2d(m_height, m_width,
- reinterpret_cast<float*>(input.data),
- reinterpret_cast<fftwf_complex*>(complex_result.data),
- FFTW_ESTIMATE);
- fftwf_execute(plan);
- fftwf_destroy_plan(plan);
- return ComplexMat(complex_result);
+ Fft::forward(real_input, complex_result);
+
+ if (real_input.size[0] == 1)
+ fftwf_execute_dft_r2c(plan_f, reinterpret_cast<float *>(real_input.data),
+ reinterpret_cast<fftwf_complex *>(complex_result.get_p_data()));
+#ifdef BIG_BATCH
+ else
+ fftwf_execute_dft_r2c(plan_f_all_scales, reinterpret_cast<float *>(real_input.data),
+ reinterpret_cast<fftwf_complex *>(complex_result.get_p_data()));
+#endif
}
-ComplexMat Fftw::forward_window(const std::vector<cv::Mat> &input)
+void Fftw::forward_window(MatScaleFeats &feat, ComplexMat & complex_result, MatScaleFeats &temp)
{
- int n_channels = input.size();
- cv::Mat in_all(m_height * n_channels, m_width, CV_32F);
- for (int i = 0; i < n_channels; ++i) {
- cv::Mat in_roi(in_all, cv::Rect(0, i*m_height, m_width, m_height));
- in_roi = input[i].mul(m_window);
+ Fft::forward_window(feat, complex_result, temp);
+
+ uint n_scales = feat.size[0];
+ for (uint s = 0; s < n_scales; ++s) {
+ for (uint ch = 0; ch < uint(feat.size[1]); ++ch) {
+ cv::Mat feat_plane = feat.plane(s, ch);
+ cv::Mat temp_plane = temp.plane(s, ch);
+ temp_plane = feat_plane.mul(m_window);
+ }
}
- cv::Mat complex_result(n_channels*m_height, m_width/2+1, CV_32FC2);
-
- int rank = 2;
- int n[] = {(int)m_height, (int)m_width};
- int howmany = n_channels;
- int idist = m_height*m_width, odist = m_height*(m_width/2+1);
- int istride = 1, ostride = 1;
- int *inembed = NULL, *onembed = NULL;
- float *in = reinterpret_cast<float*>(in_all.data);
- fftwf_complex *out = reinterpret_cast<fftwf_complex*>(complex_result.data);
-
- fftwf_plan plan = fftwf_plan_many_dft_r2c(rank, n, howmany,
- in, inembed, istride, idist,
- out, onembed, ostride, odist,
- FFTW_ESTIMATE);
- fftwf_execute(plan);
- fftwf_destroy_plan(plan);
- ComplexMat result(m_height, m_width/2 + 1, n_channels);
- for (int i = 0; i < n_channels; ++i)
- result.set_channel(i, complex_result(cv::Rect(0, i*m_height, m_width/2+1, m_height)));
+ float *in = temp.ptr<float>();
+ fftwf_complex *out = reinterpret_cast<fftwf_complex *>(complex_result.get_p_data());
- return result;
+ if (n_scales == 1)
+ fftwf_execute_dft_r2c(plan_fw, in, out);
+#ifdef BIG_BATCH
+ else
+ fftwf_execute_dft_r2c(plan_fw_all_scales, in, out);
+#endif
}
-cv::Mat Fftw::inverse(const ComplexMat &inputf)
+void Fftw::inverse(ComplexMat &complex_input, MatScales &real_result)
{
- int n_channels = inputf.n_channels;
- cv::Mat real_result(m_height, m_width, CV_32FC(n_channels));
- cv::Mat complex_vconcat = inputf.to_vconcat_mat();
+ Fft::inverse(complex_input, real_result);
- int rank = 2;
- int n[] = {(int)m_height, (int)m_width};
- int howmany = n_channels;
- int idist = m_height*(m_width/2+1), odist = 1;
- int istride = 1, ostride = n_channels;
- int *inembed = NULL, *onembed = NULL;
- fftwf_complex *in = reinterpret_cast<fftwf_complex*>(complex_vconcat.data);
- float *out = reinterpret_cast<float*>(real_result.data);
-
- fftwf_plan plan = fftwf_plan_many_dft_c2r(rank, n, howmany,
- in, inembed, istride, idist,
- out, onembed, ostride, odist,
- FFTW_ESTIMATE);
- fftwf_execute(plan);
- fftwf_destroy_plan(plan);
+ int n_channels = complex_input.n_channels;
+ fftwf_complex *in = reinterpret_cast<fftwf_complex *>(complex_input.get_p_data());
+ float *out = real_result.ptr<float>();
- return real_result/(m_width*m_height);
+ if (n_channels == 1)
+ fftwf_execute_dft_c2r(plan_i_1ch, in, out);
+#ifdef BIG_BATCH
+ else
+ fftwf_execute_dft_c2r(plan_i_all_scales, in, out);
+#endif
+ real_result *= 1.0 / (m_width * m_height);
}
Fftw::~Fftw()
{
+ if (plan_f) fftwf_destroy_plan(plan_f);
+ if (plan_fw) fftwf_destroy_plan(plan_fw);
+ if (plan_i_1ch) fftwf_destroy_plan(plan_i_1ch);
+
+#ifdef BIG_BATCH
+ if (plan_f_all_scales) fftwf_destroy_plan(plan_f_all_scales);
+ if (plan_fw_all_scales) fftwf_destroy_plan(plan_fw_all_scales);
+ if (plan_i_all_scales) fftwf_destroy_plan(plan_i_all_scales);
+#endif
}
projects / hercules2020 / kcf.git / blobdiff