1 #ifndef COMPLEX_MAT_HPP_213123048309482094
2 #define COMPLEX_MAT_HPP_213123048309482094
4 #include <opencv2/opencv.hpp>
10 template <typename T> class ComplexMat_ {
17 ComplexMat_(uint _rows, uint _cols, uint _n_channels, uint _n_scales = 1)
18 : cols(_cols), rows(_rows), n_channels(_n_channels * _n_scales), n_scales(_n_scales),
19 p_data(n_channels * cols * rows) {}
20 ComplexMat_(cv::Size size, uint _n_channels, uint _n_scales = 1)
21 : cols(size.width), rows(size.height), n_channels(_n_channels * _n_scales), n_scales(_n_scales)
22 , p_data(n_channels * cols * rows) {}
24 // assuming that mat has 2 channels (real, img)
25 ComplexMat_(const cv::Mat &mat) : cols(uint(mat.cols)), rows(uint(mat.rows)), n_channels(1), n_scales(1)
26 , p_data(n_channels * cols * rows)
28 memcpy(p_data.hostMem(), mat.ptr<std::complex<T>>(), mat.total() * mat.elemSize());
31 static ComplexMat_ same_size(const ComplexMat_ &o)
33 return ComplexMat_(o.rows, o.cols, o.n_channels / o.n_scales, o.n_scales);
36 // cv::Mat API compatibility
37 cv::Size size() const { return cv::Size(cols, rows); }
38 uint channels() const { return n_channels; }
40 // assuming that mat has 2 channels (real, imag)
41 void set_channel(uint idx, const cv::Mat &mat)
43 assert(idx >= 0 && idx < n_channels);
44 for (uint i = 0; i < rows; ++i) {
45 const std::complex<T> *row = mat.ptr<std::complex<T>>(i);
46 for (uint j = 0; j < cols; ++j)
47 p_data.hostMem()[idx * rows * cols + i * cols + j] = row[j];
53 assert(n_scales == 1);
55 int n_channels_per_scale = n_channels / n_scales;
57 for (int i = 0; i < n_channels_per_scale; ++i) {
58 for (auto lhs = p_data.begin() + i * rows * cols; lhs != p_data.begin() + (i + 1) * rows * cols; ++lhs)
59 sum_sqr_norm += lhs->real() * lhs->real() + lhs->imag() * lhs->imag();
61 sum_sqr_norm = sum_sqr_norm / static_cast<T>(cols * rows);
65 void sqr_norm(DynMem_<T> &result) const
67 int n_channels_per_scale = n_channels / n_scales;
68 int scale_offset = n_channels_per_scale * rows * cols;
69 for (uint scale = 0; scale < n_scales; ++scale) {
71 for (int i = 0; i < n_channels_per_scale; ++i)
72 for (auto lhs = p_data.hostMem() + i * rows * cols + scale * scale_offset;
73 lhs != p_data.hostMem() + (i + 1) * rows * cols + scale * scale_offset; ++lhs)
74 sum_sqr_norm += lhs->real() * lhs->real() + lhs->imag() * lhs->imag();
75 result.hostMem()[scale] = sum_sqr_norm / static_cast<T>(cols * rows);
80 ComplexMat_<T> sqr_mag() const
82 return mat_const_operator([](std::complex<T> &c) { c = c.real() * c.real() + c.imag() * c.imag(); });
85 ComplexMat_<T> conj() const
87 return mat_const_operator([](std::complex<T> &c) { c = std::complex<T>(c.real(), -c.imag()); });
90 ComplexMat_<T> sum_over_channels() const
92 assert(p_data.num_elem == n_channels * rows * cols);
94 uint n_channels_per_scale = n_channels / n_scales;
95 uint scale_offset = n_channels_per_scale * rows * cols;
97 ComplexMat_<T> result(this->rows, this->cols, 1, n_scales);
98 for (uint scale = 0; scale < n_scales; ++scale) {
99 for (uint i = 0; i < rows * cols; ++i) {
100 std::complex<T> acc = 0;
101 for (uint ch = 0; ch < n_channels_per_scale; ++ch)
102 acc += p_data[scale * scale_offset + i + ch * rows * cols];
103 result.p_data.hostMem()[scale * rows * cols + i] = acc;
109 // return 2 channels (real, imag) for first complex channel
110 cv::Mat to_cv_mat() const
112 assert(p_data.size() >= 1);
113 return channel_to_cv_mat(0);
115 // return a vector of 2 channels (real, imag) per one complex channel
116 std::vector<cv::Mat> to_cv_mat_vector() const
118 std::vector<cv::Mat> result;
119 result.reserve(n_channels);
121 for (uint i = 0; i < n_channels; ++i)
122 result.push_back(channel_to_cv_mat(i));
127 std::complex<T> *get_p_data() { return p_data.hostMem(); }
128 const std::complex<T> *get_p_data() const { return p_data.hostMem(); }
130 // element-wise per channel multiplication, division and addition
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);
135 ComplexMat_<T> operator/(const ComplexMat_<T> &rhs) const
137 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs /= c_rhs; }, rhs);
139 ComplexMat_<T> operator+(const ComplexMat_<T> &rhs) const
141 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs += c_rhs; }, rhs);
144 // multiplying or adding constant
145 ComplexMat_<T> operator*(const T &rhs) const
147 return mat_const_operator([&rhs](std::complex<T> &c) { c *= rhs; });
149 ComplexMat_<T> operator+(const T &rhs) const
151 return mat_const_operator([&rhs](std::complex<T> &c) { c += rhs; });
154 // multiplying element-wise multichannel by one channel mats (rhs mat is with one channel)
155 ComplexMat_<T> mul(const ComplexMat_<T> &rhs) const
157 return matn_mat1_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs *= c_rhs; }, rhs);
160 // multiplying element-wise multichannel mats - same as operator*(ComplexMat), but without allocating memory for the result
161 ComplexMat_<T> muln(const ComplexMat_<T> &rhs) const
163 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs *= c_rhs; }, rhs);
167 friend std::ostream &operator<<(std::ostream &os, const ComplexMat_<T> &mat)
169 // for (int i = 0; i < mat.n_channels; ++i){
170 for (int i = 0; i < 1; ++i) {
171 os << "Channel " << i << std::endl;
172 for (uint j = 0; j < mat.rows; ++j) {
173 for (uint k = 0; k < mat.cols - 1; ++k)
174 os << mat.p_data[j * mat.cols + k] << ", ";
175 os << mat.p_data[j * mat.cols + mat.cols - 1] << std::endl;
182 DynMem_<std::complex<T>> p_data;
184 // convert 2 channel mat (real, imag) to vector row-by-row
185 std::vector<std::complex<T>> convert(const cv::Mat &mat)
187 std::vector<std::complex<T>> result;
188 result.reserve(mat.cols * mat.rows);
189 for (int y = 0; y < mat.rows; ++y) {
190 const T *row_ptr = mat.ptr<T>(y);
191 for (int x = 0; x < 2 * mat.cols; x += 2) {
192 result.push_back(std::complex<T>(row_ptr[x], row_ptr[x + 1]));
198 ComplexMat_<T> mat_mat_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
199 const ComplexMat_<T> &mat_rhs) const
201 assert(mat_rhs.n_channels == n_channels/n_scales && mat_rhs.cols == cols && mat_rhs.rows == rows);
203 ComplexMat_<T> result = *this;
204 for (uint s = 0; s < n_scales; ++s) {
205 auto lhs = result.p_data.hostMem() + (s * n_channels/n_scales * rows * cols);
206 auto rhs = mat_rhs.p_data.hostMem();
207 for (uint i = 0; i < n_channels/n_scales * rows * cols; ++i)
208 op(*(lhs + i), *(rhs + i));
213 ComplexMat_<T> matn_mat1_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
214 const ComplexMat_<T> &mat_rhs) const
216 assert(mat_rhs.n_channels == 1 && mat_rhs.cols == cols && mat_rhs.rows == rows);
218 ComplexMat_<T> result = *this;
219 for (uint i = 0; i < n_channels; ++i) {
220 auto lhs = result.p_data.hostMem() + i * rows * cols;
221 auto rhs = mat_rhs.p_data.hostMem();
222 for (; lhs != result.p_data.hostMem() + (i + 1) * rows * cols; ++lhs, ++rhs)
228 ComplexMat_<T> matn_mat2_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
229 const ComplexMat_<T> &mat_rhs) const
231 assert(mat_rhs.n_channels == n_channels / n_scales && mat_rhs.cols == cols && mat_rhs.rows == rows);
233 int n_channels_per_scale = n_channels / n_scales;
234 int scale_offset = n_channels_per_scale * rows * cols;
235 ComplexMat_<T> result = *this;
236 for (uint i = 0; i < n_scales; ++i) {
237 for (int j = 0; j < n_channels_per_scale; ++j) {
238 auto lhs = result.p_data.begin() + (j * rows * cols) + (i * scale_offset);
239 auto rhs = mat_rhs.p_data.begin() + (j * rows * cols);
240 for (; lhs != result.p_data.begin() + ((j + 1) * rows * cols) + (i * scale_offset); ++lhs, ++rhs)
247 ComplexMat_<T> mat_const_operator(const std::function<void(std::complex<T> &c_rhs)> &op) const
249 ComplexMat_<T> result = *this;
250 for (uint i = 0; i < n_channels; ++i)
251 for (auto lhs = result.p_data.hostMem() + i * rows * cols;
252 lhs != result.p_data.hostMem() + (i + 1) * rows * cols; ++lhs)
257 cv::Mat channel_to_cv_mat(int channel_id) const
259 cv::Mat result(rows, cols, CV_32FC2);
260 for (uint y = 0; y < rows; ++y) {
261 std::complex<T> *row_ptr = result.ptr<std::complex<T>>(y);
262 for (uint x = 0; x < cols; ++x) {
263 row_ptr[x] = p_data[channel_id * rows * cols + y * cols + x];
270 typedef ComplexMat_<float> ComplexMat;
272 #endif // COMPLEX_MAT_HPP_213123048309482094