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_() : cols(0), rows(0), n_channels(0), n_scales(0) {}
18 ComplexMat_(uint _rows, uint _cols, uint _n_channels, uint _n_scales = 1)
19 : cols(_cols), rows(_rows), n_channels(_n_channels * _n_scales), n_scales(_n_scales)
21 p_data.resize(n_channels * cols * rows);
23 ComplexMat_(cv::Size size, uint _n_channels, uint _n_scales = 1)
24 : cols(size.width), rows(size.height), n_channels(_n_channels * _n_scales), n_scales(_n_scales)
26 p_data.resize(n_channels * cols * rows);
29 // assuming that mat has 2 channels (real, img)
30 ComplexMat_(const cv::Mat &mat) : cols(uint(mat.cols)), rows(uint(mat.rows)), n_channels(1), n_scales(1)
32 p_data = convert(mat);
35 void create(uint _rows, uint _cols, uint _n_channels, uint _n_scales = 1)
39 n_channels = _n_channels * _n_scales;
41 p_data.resize(n_channels * cols * rows);
43 // cv::Mat API compatibility
44 cv::Size size() const { return cv::Size(cols, rows); }
45 uint channels() const { return n_channels; }
47 // assuming that mat has 2 channels (real, imag)
48 void set_channel(uint idx, const cv::Mat &mat)
50 assert(idx >= 0 && idx < n_channels);
51 for (uint i = 0; i < rows; ++i) {
52 const std::complex<T> *row = mat.ptr<std::complex<T>>(i);
53 for (uint j = 0; j < cols; ++j)
54 p_data[idx * rows * cols + i * cols + j] = row[j];
60 assert(n_scales == 1);
62 int n_channels_per_scale = n_channels / n_scales;
64 for (int i = 0; i < n_channels_per_scale; ++i) {
65 for (auto lhs = p_data.begin() + i * rows * cols; lhs != p_data.begin() + (i + 1) * rows * cols; ++lhs)
66 sum_sqr_norm += lhs->real() * lhs->real() + lhs->imag() * lhs->imag();
68 sum_sqr_norm = sum_sqr_norm / static_cast<T>(cols * rows);
72 void sqr_norm(DynMem_<T> &result) const
74 int n_channels_per_scale = n_channels / n_scales;
75 int scale_offset = n_channels_per_scale * rows * cols;
76 for (uint scale = 0; scale < n_scales; ++scale) {
78 for (int i = 0; i < n_channels_per_scale; ++i)
79 for (auto lhs = p_data.begin() + i * rows * cols + scale * scale_offset;
80 lhs != p_data.begin() + (i + 1) * rows * cols + scale * scale_offset; ++lhs)
81 sum_sqr_norm += lhs->real() * lhs->real() + lhs->imag() * lhs->imag();
82 result.hostMem()[scale] = sum_sqr_norm / static_cast<T>(cols * rows);
87 ComplexMat_<T> sqr_mag() const
89 return mat_const_operator([](std::complex<T> &c) { c = c.real() * c.real() + c.imag() * c.imag(); });
92 ComplexMat_<T> conj() const
94 return mat_const_operator([](std::complex<T> &c) { c = std::complex<T>(c.real(), -c.imag()); });
97 ComplexMat_<T> sum_over_channels() const
99 assert(p_data.size() == n_channels * rows * cols);
101 uint n_channels_per_scale = n_channels / n_scales;
102 uint scale_offset = n_channels_per_scale * rows * cols;
104 ComplexMat_<T> result(this->rows, this->cols, 1, n_scales);
105 for (uint scale = 0; scale < n_scales; ++scale) {
106 for (uint i = 0; i < rows * cols; ++i) {
107 std::complex<T> acc = 0;
108 for (uint ch = 0; ch < n_channels_per_scale; ++ch)
109 acc += p_data[scale * scale_offset + i + ch * rows * cols];
110 result.p_data[scale * rows * cols + i] = acc;
116 // return 2 channels (real, imag) for first complex channel
117 cv::Mat to_cv_mat() const
119 assert(p_data.size() >= 1);
120 return channel_to_cv_mat(0);
122 // return a vector of 2 channels (real, imag) per one complex channel
123 std::vector<cv::Mat> to_cv_mat_vector() const
125 std::vector<cv::Mat> result;
126 result.reserve(n_channels);
128 for (uint i = 0; i < n_channels; ++i)
129 result.push_back(channel_to_cv_mat(i));
134 std::complex<T> *get_p_data() { return p_data.data(); }
135 const std::complex<T> *get_p_data() const { return p_data.data(); }
137 // element-wise per channel multiplication, division and addition
138 ComplexMat_<T> operator*(const ComplexMat_<T> &rhs) const
140 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs *= c_rhs; }, rhs);
142 ComplexMat_<T> operator/(const ComplexMat_<T> &rhs) const
144 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs /= c_rhs; }, rhs);
146 ComplexMat_<T> operator+(const ComplexMat_<T> &rhs) const
148 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs += c_rhs; }, rhs);
151 // multiplying or adding constant
152 ComplexMat_<T> operator*(const T &rhs) const
154 return mat_const_operator([&rhs](std::complex<T> &c) { c *= rhs; });
156 ComplexMat_<T> operator+(const T &rhs) const
158 return mat_const_operator([&rhs](std::complex<T> &c) { c += rhs; });
161 // multiplying element-wise multichannel by one channel mats (rhs mat is with one channel)
162 ComplexMat_<T> mul(const ComplexMat_<T> &rhs) const
164 return matn_mat1_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs *= c_rhs; }, rhs);
167 // multiplying element-wise multichannel mats - same as operator*(ComplexMat), but without allocating memory for the result
168 ComplexMat_<T> muln(const ComplexMat_<T> &rhs) const
170 return mat_mat_operator([](std::complex<T> &c_lhs, const std::complex<T> &c_rhs) { c_lhs *= c_rhs; }, rhs);
174 friend std::ostream &operator<<(std::ostream &os, const ComplexMat_<T> &mat)
176 // for (int i = 0; i < mat.n_channels; ++i){
177 for (int i = 0; i < 1; ++i) {
178 os << "Channel " << i << std::endl;
179 for (uint j = 0; j < mat.rows; ++j) {
180 for (uint k = 0; k < mat.cols - 1; ++k)
181 os << mat.p_data[j * mat.cols + k] << ", ";
182 os << mat.p_data[j * mat.cols + mat.cols - 1] << std::endl;
189 std::vector<std::complex<T>> p_data;
191 // convert 2 channel mat (real, imag) to vector row-by-row
192 std::vector<std::complex<T>> convert(const cv::Mat &mat)
194 std::vector<std::complex<T>> result;
195 result.reserve(mat.cols * mat.rows);
196 for (int y = 0; y < mat.rows; ++y) {
197 const T *row_ptr = mat.ptr<T>(y);
198 for (int x = 0; x < 2 * mat.cols; x += 2) {
199 result.push_back(std::complex<T>(row_ptr[x], row_ptr[x + 1]));
205 ComplexMat_<T> mat_mat_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
206 const ComplexMat_<T> &mat_rhs) const
208 assert(mat_rhs.n_channels == n_channels/n_scales && mat_rhs.cols == cols && mat_rhs.rows == rows);
210 ComplexMat_<T> result = *this;
211 for (uint s = 0; s < n_scales; ++s) {
212 auto lhs = result.p_data.begin() + (s * n_channels/n_scales * rows * cols);
213 auto rhs = mat_rhs.p_data.begin();
214 for (uint i = 0; i < n_channels/n_scales * rows * cols; ++i)
215 op(*(lhs + i), *(rhs + i));
220 ComplexMat_<T> matn_mat1_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
221 const ComplexMat_<T> &mat_rhs) const
223 assert(mat_rhs.n_channels == 1 && mat_rhs.cols == cols && mat_rhs.rows == rows);
225 ComplexMat_<T> result = *this;
226 for (uint i = 0; i < n_channels; ++i) {
227 auto lhs = result.p_data.begin() + i * rows * cols;
228 auto rhs = mat_rhs.p_data.begin();
229 for (; lhs != result.p_data.begin() + (i + 1) * rows * cols; ++lhs, ++rhs)
235 ComplexMat_<T> matn_mat2_operator(void (*op)(std::complex<T> &c_lhs, const std::complex<T> &c_rhs),
236 const ComplexMat_<T> &mat_rhs) const
238 assert(mat_rhs.n_channels == n_channels / n_scales && mat_rhs.cols == cols && mat_rhs.rows == rows);
240 int n_channels_per_scale = n_channels / n_scales;
241 int scale_offset = n_channels_per_scale * rows * cols;
242 ComplexMat_<T> result = *this;
243 for (uint i = 0; i < n_scales; ++i) {
244 for (int j = 0; j < n_channels_per_scale; ++j) {
245 auto lhs = result.p_data.begin() + (j * rows * cols) + (i * scale_offset);
246 auto rhs = mat_rhs.p_data.begin() + (j * rows * cols);
247 for (; lhs != result.p_data.begin() + ((j + 1) * rows * cols) + (i * scale_offset); ++lhs, ++rhs)
254 ComplexMat_<T> mat_const_operator(const std::function<void(std::complex<T> &c_rhs)> &op) const
256 ComplexMat_<T> result = *this;
257 for (uint i = 0; i < n_channels; ++i)
258 for (auto lhs = result.p_data.begin() + i * rows * cols;
259 lhs != result.p_data.begin() + (i + 1) * rows * cols; ++lhs)
264 cv::Mat channel_to_cv_mat(int channel_id) const
266 cv::Mat result(rows, cols, CV_32FC2);
267 for (uint y = 0; y < rows; ++y) {
268 std::complex<T> *row_ptr = result.ptr<std::complex<T>>(y);
269 for (uint x = 0; x < cols; ++x) {
270 row_ptr[x] = p_data[channel_id * rows * cols + y * cols + x];
277 typedef ComplexMat_<float> ComplexMat;
279 #endif // COMPLEX_MAT_HPP_213123048309482094