1 #ifndef COMPLEX_MAT_HPP_213123048309482094
2 #define COMPLEX_MAT_HPP_213123048309482094
4 #include <opencv2/opencv.hpp>
9 template<typename T> class ComplexMat_
17 ComplexMat_() : cols(0), rows(0), n_channels(0) {}
18 ComplexMat_(int _rows, int _cols, int _n_channels) : cols(_cols), rows(_rows), n_channels(_n_channels)
20 p_data.resize(n_channels*cols*rows);
24 //assuming that mat has 2 channels (real, img)
25 ComplexMat_(const cv::Mat & mat) : cols(mat.cols), rows(mat.rows), n_channels(1)
27 p_data = convert(mat);
30 void create(int _rows, int _cols, int _n_channels)
34 n_channels = _n_channels;
35 p_data.resize(n_channels*cols*rows);
38 void create(int _rows, int _cols, int _n_channels, int _n_scales)
42 n_channels = _n_channels;
44 p_data.resize(n_channels*cols*rows);
46 // cv::Mat API compatibility
47 cv::Size size() { return cv::Size(cols, rows); }
48 int channels() { return n_channels; }
49 int channels() const { return n_channels; }
51 //assuming that mat has 2 channels (real, imag)
52 void set_channel(int idx, const cv::Mat & mat)
54 assert(idx >= 0 && idx < n_channels);
55 for (int i = 0; i < rows; ++i){
56 const std::complex<T> *row = mat.ptr<std::complex<T>>(i);
57 for (int j = 0; j < cols; ++j)
58 p_data[idx*rows*cols+i*cols+j]=row[j];
63 void sqr_norm(T *sums_sqr_norms) const
65 int n_channels_per_scale = n_channels/n_scales;
66 int scale_offset = n_channels_per_scale*rows*cols;
68 for(int scale = 0; scale < n_scales; ++scale){
70 for (int i = 0; i < n_channels_per_scale; ++i)
71 for (auto lhs = p_data.begin()+i*rows*cols+scale*scale_offset; lhs != p_data.begin()+(i+1)*rows*cols+scale*scale_offset; ++lhs)
72 sum_sqr_norm += lhs->real()*lhs->real() + lhs->imag()*lhs->imag();
73 sums_sqr_norms[scale] = sum_sqr_norm/static_cast<T>(cols*rows);
78 ComplexMat_<T> sqr_mag() const
80 return mat_const_operator( [](std::complex<T> & c) { c = c.real()*c.real() + c.imag()*c.imag(); } );
83 ComplexMat_<T> conj() const
85 return mat_const_operator( [](std::complex<T> & c) { c = std::complex<T>(c.real(), -c.imag()); } );
88 ComplexMat_<T> sum_over_channels() const
90 assert(p_data.size() > 1);
91 ComplexMat_<T> result(this->rows, this->cols, 1);
92 std::copy(p_data.begin(),p_data.begin()+rows*cols, result.p_data.begin());
93 for (int i = 1; i < n_channels; ++i) {
94 std::transform(result.p_data.begin(), result.p_data.end(), p_data.begin()+i*rows*cols, result.p_data.begin(), std::plus<std::complex<T>>());
99 //return 2 channels (real, imag) for first complex channel
100 cv::Mat to_cv_mat() const
102 assert(p_data.size() >= 1);
103 return channel_to_cv_mat(0);
105 // return a vector of 2 channels (real, imag) per one complex channel
106 std::vector<cv::Mat> to_cv_mat_vector() const
108 std::vector<cv::Mat> result;
109 result.reserve(n_channels);
111 for (int i = 0; i < n_channels; ++i)
112 result.push_back(channel_to_cv_mat(i));
117 std::complex<T>* get_p_data() const
119 return p_data.data();
122 //element-wise per channel multiplication, division and addition
123 ComplexMat_<T> operator*(const ComplexMat_<T> & rhs) const
125 return mat_mat_operator( [](std::complex<T> & c_lhs, const std::complex<T> & c_rhs) { c_lhs *= c_rhs; }, rhs);
127 ComplexMat_<T> operator/(const ComplexMat_<T> & rhs) const
129 return mat_mat_operator( [](std::complex<T> & c_lhs, const std::complex<T> & c_rhs) { c_lhs /= c_rhs; }, rhs);
131 ComplexMat_<T> operator+(const ComplexMat_<T> & rhs) const
133 return mat_mat_operator( [](std::complex<T> & c_lhs, const std::complex<T> & c_rhs) { c_lhs += c_rhs; }, rhs);
136 //multiplying or adding constant
137 ComplexMat_<T> operator*(const T & rhs) const
139 return mat_const_operator( [&rhs](std::complex<T> & c) { c *= rhs; });
141 ComplexMat_<T> operator+(const T & rhs) const
143 return mat_const_operator( [&rhs](std::complex<T> & c) { c += rhs; });
146 //multiplying element-wise multichannel by one channel mats (rhs mat is with one channel)
147 ComplexMat_<T> mul(const ComplexMat_<T> & rhs) const
149 return matn_mat1_operator( [](std::complex<T> & c_lhs, const std::complex<T> & c_rhs) { c_lhs *= c_rhs; }, rhs);
152 //multiplying element-wise multichannel by one channel mats (rhs mat is with multiple channel)
153 ComplexMat_<T> mul2(const ComplexMat_<T> & rhs) const
155 return matn_mat2_operator( [](std::complex<T> & c_lhs, const std::complex<T> & c_rhs) { c_lhs *= c_rhs; }, rhs);
159 friend std::ostream & operator<<(std::ostream & os, const ComplexMat_<T> & mat)
161 //for (int i = 0; i < mat.n_channels; ++i){
162 for (int i = 0; i < 1; ++i){
163 os << "Channel " << i << std::endl;
164 for (int j = 0; j < mat.rows; ++j) {
165 for (int k = 0; k < mat.cols-1; ++k)
166 os << mat.p_data[j*mat.cols + k] << ", ";
167 os << mat.p_data[j*mat.cols + mat.cols-1] << std::endl;
175 mutable std::vector<std::complex<T>> p_data;
177 //convert 2 channel mat (real, imag) to vector row-by-row
178 std::vector<std::complex<T>> convert(const cv::Mat & mat)
180 std::vector<std::complex<T>> result;
181 result.reserve(mat.cols*mat.rows);
182 for (int y = 0; y < mat.rows; ++y) {
183 const T * row_ptr = mat.ptr<T>(y);
184 for (int x = 0; x < 2*mat.cols; x += 2){
185 result.push_back(std::complex<T>(row_ptr[x], row_ptr[x+1]));
191 ComplexMat_<T> mat_mat_operator(void (*op)(std::complex<T> & c_lhs, const std::complex<T> & c_rhs), const ComplexMat_<T> & mat_rhs) const
193 assert(mat_rhs.n_channels == n_channels && mat_rhs.cols == cols && mat_rhs.rows == rows);
195 ComplexMat_<T> result = *this;
196 for (int i = 0; i < n_channels; ++i) {
197 auto lhs = result.p_data.begin()+i*rows*cols;
198 auto rhs = mat_rhs.p_data.begin()+i*rows*cols;
199 for ( ; lhs != result.p_data.begin()+(i+1)*rows*cols; ++lhs, ++rhs)
205 ComplexMat_<T> matn_mat1_operator(void (*op)(std::complex<T> & c_lhs, const std::complex<T> & c_rhs), const ComplexMat_<T> & mat_rhs) const
207 assert(mat_rhs.n_channels == 1 && mat_rhs.cols == cols && mat_rhs.rows == rows);
209 ComplexMat_<T> result = *this;
210 for (int i = 0; i < n_channels; ++i) {
211 auto lhs = result.p_data.begin()+i*rows*cols;
212 auto rhs = mat_rhs.p_data.begin();
213 for ( ; lhs != result.p_data.begin()+(i+1)*rows*cols; ++lhs, ++rhs)
219 ComplexMat_<T> matn_mat2_operator(void (*op)(std::complex<T> & c_lhs, const std::complex<T> & c_rhs), const ComplexMat_<T> & mat_rhs) const
221 assert(mat_rhs.n_channels == n_channels/n_scales && mat_rhs.cols == cols && mat_rhs.rows == rows);
223 int n_channels_per_scale = n_channels/n_scales;
224 int scale_offset = n_channels_per_scale*rows*cols;
225 ComplexMat_<T> result = *this;
226 for (int i = 0; i < n_scales; ++i) {
227 for (int j = 0; j < n_channels_per_scale; ++j) {
228 auto lhs = result.p_data.begin()+(j*rows*cols)+(i*scale_offset);
229 auto rhs = mat_rhs.p_data.begin()+(j*rows*cols);
230 for ( ; lhs != result.p_data.begin()+((j+1)*rows*cols)+(i*scale_offset); ++lhs, ++rhs)
237 ComplexMat_<T> mat_const_operator(const std::function<void(std::complex<T> & c_rhs)> & op) const
239 ComplexMat_<T> result = *this;
240 for (int i = 0; i < n_channels; ++i)
241 for (auto lhs = result.p_data.begin()+i*rows*cols; lhs != result.p_data.begin()+(i+1)*rows*cols; ++lhs)
246 cv::Mat channel_to_cv_mat(int channel_id) const
248 cv::Mat result(rows, cols, CV_32FC2);
249 for (int y = 0; y < rows; ++y) {
250 std::complex<T> * row_ptr = result.ptr<std::complex<T>>(y);
251 for (int x = 0; x < cols; ++x){
252 row_ptr[x] = p_data[channel_id*rows*cols+y*cols+x];
260 typedef ComplexMat_<float> ComplexMat;
263 #endif //COMPLEX_MAT_HPP_213123048309482094