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Added MLPPConvolutionsOld.
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@ -85,6 +85,7 @@ sources = [
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"mlpp/hypothesis_testing/hypothesis_testing_old.cpp",
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"mlpp/data/data_old.cpp",
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"mlpp/cost/cost_old.cpp",
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"mlpp/convolutions/convolutions_old.cpp",
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"test/mlpp_tests.cpp",
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]
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377
mlpp/convolutions/convolutions_old.cpp
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377
mlpp/convolutions/convolutions_old.cpp
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@ -0,0 +1,377 @@
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//
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// Convolutions.cpp
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//
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// Created by Marc Melikyan on 4/6/21.
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//
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#include "../convolutions/convolutions_old.h"
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#include "../lin_alg/lin_alg.h"
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#include "../stat/stat.h"
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#include <cmath>
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#include <iostream>
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::convolve_2d(std::vector<std::vector<real_t>> input, std::vector<std::vector<real_t>> filter, int S, int P) {
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MLPPLinAlg alg;
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std::vector<std::vector<real_t>> feature_map;
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uint32_t N = input.size();
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uint32_t F = filter.size();
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uint32_t map_size = (N - F + 2 * P) / S + 1; // This is computed as ⌊map_size⌋ by def- thanks C++!
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if (P != 0) {
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std::vector<std::vector<real_t>> padded_input;
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padded_input.resize(N + 2 * P);
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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padded_input[i].resize(N + 2 * P);
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}
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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for (uint32_t j = 0; j < padded_input[i].size(); j++) {
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if (i - P < 0 || j - P < 0 || i - P > input.size() - 1 || j - P > input[0].size() - 1) {
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padded_input[i][j] = 0;
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} else {
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padded_input[i][j] = input[i - P][j - P];
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}
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}
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}
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input.resize(padded_input.size());
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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input[i].resize(padded_input[i].size());
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}
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input = padded_input;
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}
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feature_map.resize(map_size);
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for (uint32_t i = 0; i < map_size; i++) {
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feature_map[i].resize(map_size);
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}
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for (uint32_t i = 0; i < map_size; i++) {
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for (uint32_t j = 0; j < map_size; j++) {
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std::vector<real_t> convolving_input;
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for (uint32_t k = 0; k < F; k++) {
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for (uint32_t p = 0; p < F; p++) {
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if (i == 0 && j == 0) {
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convolving_input.push_back(input[i + k][j + p]);
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} else if (i == 0) {
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convolving_input.push_back(input[i + k][j + (S - 1) + p]);
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} else if (j == 0) {
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convolving_input.push_back(input[i + (S - 1) + k][j + p]);
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} else {
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convolving_input.push_back(input[i + (S - 1) + k][j + (S - 1) + p]);
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}
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}
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}
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feature_map[i][j] = alg.dot(convolving_input, alg.flatten(filter));
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}
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}
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return feature_map;
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}
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std::vector<std::vector<std::vector<real_t>>> MLPPConvolutionsOld::convolve_3d(std::vector<std::vector<std::vector<real_t>>> input, std::vector<std::vector<std::vector<real_t>>> filter, int S, int P) {
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MLPPLinAlg alg;
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std::vector<std::vector<std::vector<real_t>>> feature_map;
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uint32_t N = input[0].size();
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uint32_t F = filter[0].size();
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uint32_t C = filter.size() / input.size();
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uint32_t map_size = (N - F + 2 * P) / S + 1; // This is computed as ⌊map_size⌋ by def.
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if (P != 0) {
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for (uint32_t c = 0; c < input.size(); c++) {
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std::vector<std::vector<real_t>> padded_input;
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padded_input.resize(N + 2 * P);
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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padded_input[i].resize(N + 2 * P);
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}
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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for (uint32_t j = 0; j < padded_input[i].size(); j++) {
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if (i - P < 0 || j - P < 0 || i - P > input[c].size() - 1 || j - P > input[c][0].size() - 1) {
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padded_input[i][j] = 0;
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} else {
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padded_input[i][j] = input[c][i - P][j - P];
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}
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}
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}
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input[c].resize(padded_input.size());
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for (uint32_t i = 0; i < padded_input.size(); i++) {
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input[c][i].resize(padded_input[i].size());
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}
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input[c] = padded_input;
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}
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}
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feature_map.resize(C);
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for (uint32_t i = 0; i < feature_map.size(); i++) {
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feature_map[i].resize(map_size);
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for (uint32_t j = 0; j < feature_map[i].size(); j++) {
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feature_map[i][j].resize(map_size);
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}
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}
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for (uint32_t c = 0; c < C; c++) {
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for (uint32_t i = 0; i < map_size; i++) {
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for (uint32_t j = 0; j < map_size; j++) {
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std::vector<real_t> convolving_input;
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for (uint32_t t = 0; t < input.size(); t++) {
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for (uint32_t k = 0; k < F; k++) {
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for (uint32_t p = 0; p < F; p++) {
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if (i == 0 && j == 0) {
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convolving_input.push_back(input[t][i + k][j + p]);
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} else if (i == 0) {
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convolving_input.push_back(input[t][i + k][j + (S - 1) + p]);
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} else if (j == 0) {
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convolving_input.push_back(input[t][i + (S - 1) + k][j + p]);
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} else {
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convolving_input.push_back(input[t][i + (S - 1) + k][j + (S - 1) + p]);
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}
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}
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}
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}
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feature_map[c][i][j] = alg.dot(convolving_input, alg.flatten(filter));
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}
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}
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}
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return feature_map;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::pool_2d(std::vector<std::vector<real_t>> input, int F, int S, std::string type) {
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MLPPLinAlg alg;
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std::vector<std::vector<real_t>> pooled_map;
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uint32_t N = input.size();
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uint32_t map_size = floor((N - F) / S + 1);
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pooled_map.resize(map_size);
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for (uint32_t i = 0; i < map_size; i++) {
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pooled_map[i].resize(map_size);
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}
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for (uint32_t i = 0; i < map_size; i++) {
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for (uint32_t j = 0; j < map_size; j++) {
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std::vector<real_t> pooling_input;
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for (int k = 0; k < F; k++) {
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for (int p = 0; p < F; p++) {
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if (i == 0 && j == 0) {
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pooling_input.push_back(input[i + k][j + p]);
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} else if (i == 0) {
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pooling_input.push_back(input[i + k][j + (S - 1) + p]);
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} else if (j == 0) {
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pooling_input.push_back(input[i + (S - 1) + k][j + p]);
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} else {
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pooling_input.push_back(input[i + (S - 1) + k][j + (S - 1) + p]);
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}
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}
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}
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if (type == "Average") {
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MLPPStat stat;
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pooled_map[i][j] = stat.mean(pooling_input);
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} else if (type == "Min") {
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pooled_map[i][j] = alg.min(pooling_input);
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} else {
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pooled_map[i][j] = alg.max(pooling_input);
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}
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}
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}
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return pooled_map;
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}
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std::vector<std::vector<std::vector<real_t>>> MLPPConvolutionsOld::pool_3d(std::vector<std::vector<std::vector<real_t>>> input, int F, int S, std::string type) {
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std::vector<std::vector<std::vector<real_t>>> pooled_map;
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for (uint32_t i = 0; i < input.size(); i++) {
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pooled_map.push_back(pool_2d(input[i], F, S, type));
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}
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return pooled_map;
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}
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real_t MLPPConvolutionsOld::global_pool_2d(std::vector<std::vector<real_t>> input, std::string type) {
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MLPPLinAlg alg;
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if (type == "Average") {
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MLPPStat stat;
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return stat.mean(alg.flatten(input));
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} else if (type == "Min") {
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return alg.min(alg.flatten(input));
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} else {
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return alg.max(alg.flatten(input));
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}
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}
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std::vector<real_t> MLPPConvolutionsOld::global_pool_3d(std::vector<std::vector<std::vector<real_t>>> input, std::string type) {
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std::vector<real_t> pooled_map;
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for (uint32_t i = 0; i < input.size(); i++) {
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pooled_map.push_back(global_pool_2d(input[i], type));
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}
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return pooled_map;
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}
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real_t MLPPConvolutionsOld::gaussian_2d(real_t x, real_t y, real_t std) {
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real_t std_sq = std * std;
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return 1 / (2 * M_PI * std_sq) * std::exp(-(x * x + y * y) / 2 * std_sq);
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::gaussian_filter_2d(int size, real_t std) {
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std::vector<std::vector<real_t>> filter;
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filter.resize(size);
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for (uint32_t i = 0; i < filter.size(); i++) {
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filter[i].resize(size);
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}
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for (int i = 0; i < size; i++) {
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for (int j = 0; j < size; j++) {
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filter[i][j] = gaussian_2d(i - (size - 1) / 2, (size - 1) / 2 - j, std);
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}
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}
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return filter;
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}
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/*
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Indeed a filter could have been used for this purpose, but I decided that it would've just
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been easier to carry out the calculation explicitly, mainly because it is more informative,
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and also because my convolution algorithm is only built for filters with equally sized
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heights and widths.
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*/
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::dx(std::vector<std::vector<real_t>> input) {
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std::vector<std::vector<real_t>> deriv; // We assume a gray scale image.
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deriv.resize(input.size());
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for (uint32_t i = 0; i < deriv.size(); i++) {
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deriv[i].resize(input[i].size());
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}
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for (uint32_t i = 0; i < input.size(); i++) {
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for (uint32_t j = 0; j < input[i].size(); j++) {
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if (j != 0 && j != input.size() - 1) {
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deriv[i][j] = input[i][j + 1] - input[i][j - 1];
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} else if (j == 0) {
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deriv[i][j] = input[i][j + 1] - 0; // Implicit zero-padding
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} else {
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deriv[i][j] = 0 - input[i][j - 1]; // Implicit zero-padding
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}
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}
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}
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return deriv;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::dy(std::vector<std::vector<real_t>> input) {
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std::vector<std::vector<real_t>> deriv;
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deriv.resize(input.size());
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for (uint32_t i = 0; i < deriv.size(); i++) {
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deriv[i].resize(input[i].size());
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}
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for (uint32_t i = 0; i < input.size(); i++) {
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for (uint32_t j = 0; j < input[i].size(); j++) {
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if (i != 0 && i != input.size() - 1) {
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deriv[i][j] = input[i - 1][j] - input[i + 1][j];
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} else if (i == 0) {
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deriv[i][j] = 0 - input[i + 1][j]; // Implicit zero-padding
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} else {
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deriv[i][j] = input[i - 1][j] - 0; // Implicit zero-padding
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}
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}
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}
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return deriv;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::grad_magnitude(std::vector<std::vector<real_t>> input) {
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MLPPLinAlg alg;
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std::vector<std::vector<real_t>> x_deriv_2 = alg.hadamard_product(dx(input), dx(input));
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std::vector<std::vector<real_t>> y_deriv_2 = alg.hadamard_product(dy(input), dy(input));
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return alg.sqrt(alg.addition(x_deriv_2, y_deriv_2));
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::grad_orientation(std::vector<std::vector<real_t>> input) {
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std::vector<std::vector<real_t>> deriv;
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deriv.resize(input.size());
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for (uint32_t i = 0; i < deriv.size(); i++) {
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deriv[i].resize(input[i].size());
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}
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std::vector<std::vector<real_t>> x_deriv = dx(input);
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std::vector<std::vector<real_t>> y_deriv = dy(input);
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for (uint32_t i = 0; i < deriv.size(); i++) {
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for (uint32_t j = 0; j < deriv[i].size(); j++) {
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deriv[i][j] = std::atan2(y_deriv[i][j], x_deriv[i][j]);
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}
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}
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return deriv;
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}
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std::vector<std::vector<std::vector<real_t>>> MLPPConvolutionsOld::compute_m(std::vector<std::vector<real_t>> input) {
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real_t const SIGMA = 1;
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real_t const GAUSSIAN_SIZE = 3;
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real_t const GAUSSIAN_PADDING = ((input.size() - 1) + GAUSSIAN_SIZE - input.size()) / 2; // Convs must be same.
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std::cout << GAUSSIAN_PADDING << std::endl;
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MLPPLinAlg alg;
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std::vector<std::vector<real_t>> x_deriv = dx(input);
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std::vector<std::vector<real_t>> y_deriv = dy(input);
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std::vector<std::vector<real_t>> gaussian_filter = gaussian_filter_2d(GAUSSIAN_SIZE, SIGMA); // Sigma of 1, size of 3.
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std::vector<std::vector<real_t>> xx_deriv = convolve_2d(alg.hadamard_product(x_deriv, x_deriv), gaussian_filter, 1, GAUSSIAN_PADDING);
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std::vector<std::vector<real_t>> yy_deriv = convolve_2d(alg.hadamard_product(y_deriv, y_deriv), gaussian_filter, 1, GAUSSIAN_PADDING);
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std::vector<std::vector<real_t>> xy_deriv = convolve_2d(alg.hadamard_product(x_deriv, y_deriv), gaussian_filter, 1, GAUSSIAN_PADDING);
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std::vector<std::vector<std::vector<real_t>>> M = { xx_deriv, yy_deriv, xy_deriv };
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return M;
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}
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std::vector<std::vector<std::string>> MLPPConvolutionsOld::harris_corner_detection(std::vector<std::vector<real_t>> input) {
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real_t const k = 0.05; // Empirically determined wherein k -> [0.04, 0.06], though conventionally 0.05 is typically used as well.
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MLPPLinAlg alg;
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std::vector<std::vector<std::vector<real_t>>> M = compute_m(input);
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std::vector<std::vector<real_t>> det = alg.subtraction(alg.hadamard_product(M[0], M[1]), alg.hadamard_product(M[2], M[2]));
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std::vector<std::vector<real_t>> trace = alg.addition(M[0], M[1]);
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// The reason this is not a scalar is because xx_deriv, xy_deriv, yx_deriv, and yy_deriv are not scalars.
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std::vector<std::vector<real_t>> r = alg.subtraction(det, alg.scalarMultiply(k, alg.hadamard_product(trace, trace)));
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std::vector<std::vector<std::string>> imageTypes;
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imageTypes.resize(r.size());
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alg.printMatrix(r);
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for (uint32_t i = 0; i < r.size(); i++) {
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imageTypes[i].resize(r[i].size());
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for (uint32_t j = 0; j < r[i].size(); j++) {
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if (r[i][j] > 0) {
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imageTypes[i][j] = "C";
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} else if (r[i][j] < 0) {
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imageTypes[i][j] = "E";
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} else {
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imageTypes[i][j] = "N";
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}
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}
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}
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return imageTypes;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_prewitt_horizontal() {
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return _prewitt_horizontal;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_prewitt_vertical() {
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return _prewitt_vertical;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_sobel_horizontal() {
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return _sobel_horizontal;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_sobel_vertical() {
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return _sobel_vertical;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_scharr_horizontal() {
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return _scharr_horizontal;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_scharr_vertical() {
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return _scharr_vertical;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_roberts_horizontal() {
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return _roberts_horizontal;
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}
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std::vector<std::vector<real_t>> MLPPConvolutionsOld::get_roberts_vertical() {
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return _roberts_vertical;
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}
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MLPPConvolutionsOld::MLPPConvolutionsOld() {
|
||||
_prewitt_horizontal = { { 1, 1, 1 }, { 0, 0, 0 }, { -1, -1, -1 } };
|
||||
_prewitt_vertical = { { 1, 0, -1 }, { 1, 0, -1 }, { 1, 0, -1 } };
|
||||
_sobel_horizontal = { { 1, 2, 1 }, { 0, 0, 0 }, { -1, -2, -1 } };
|
||||
_sobel_vertical = { { -1, 0, 1 }, { -2, 0, 2 }, { -1, 0, 1 } };
|
||||
_scharr_horizontal = { { 3, 10, 3 }, { 0, 0, 0 }, { -3, -10, -3 } };
|
||||
_scharr_vertical = { { 3, 0, -3 }, { 10, 0, -10 }, { 3, 0, -3 } };
|
||||
_roberts_horizontal = { { 0, 1 }, { -1, 0 } };
|
||||
_roberts_vertical = { { 1, 0 }, { 0, -1 } };
|
||||
}
|
||||
|
||||
void MLPPConvolutionsOld::_bind_methods() {
|
||||
}
|
||||
61
mlpp/convolutions/convolutions_old.h
Normal file
61
mlpp/convolutions/convolutions_old.h
Normal file
@ -0,0 +1,61 @@
|
||||
|
||||
#ifndef MLPP_CONVOLUTIONS_OLD_H
|
||||
#define MLPP_CONVOLUTIONS_OLD_H
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "core/math/math_defs.h"
|
||||
|
||||
#include "core/object/reference.h"
|
||||
|
||||
class MLPPConvolutionsOld : public Reference {
|
||||
GDCLASS(MLPPConvolutionsOld, Reference);
|
||||
|
||||
public:
|
||||
std::vector<std::vector<real_t>> convolve_2d(std::vector<std::vector<real_t>> input, std::vector<std::vector<real_t>> filter, int S, int P = 0);
|
||||
std::vector<std::vector<std::vector<real_t>>> convolve_3d(std::vector<std::vector<std::vector<real_t>>> input, std::vector<std::vector<std::vector<real_t>>> filter, int S, int P = 0);
|
||||
|
||||
std::vector<std::vector<real_t>> pool_2d(std::vector<std::vector<real_t>> input, int F, int S, std::string type);
|
||||
std::vector<std::vector<std::vector<real_t>>> pool_3d(std::vector<std::vector<std::vector<real_t>>> input, int F, int S, std::string type);
|
||||
|
||||
real_t global_pool_2d(std::vector<std::vector<real_t>> input, std::string type);
|
||||
std::vector<real_t> global_pool_3d(std::vector<std::vector<std::vector<real_t>>> input, std::string type);
|
||||
|
||||
real_t gaussian_2d(real_t x, real_t y, real_t std);
|
||||
std::vector<std::vector<real_t>> gaussian_filter_2d(int size, real_t std);
|
||||
|
||||
std::vector<std::vector<real_t>> dx(std::vector<std::vector<real_t>> input);
|
||||
std::vector<std::vector<real_t>> dy(std::vector<std::vector<real_t>> input);
|
||||
|
||||
std::vector<std::vector<real_t>> grad_magnitude(std::vector<std::vector<real_t>> input);
|
||||
std::vector<std::vector<real_t>> grad_orientation(std::vector<std::vector<real_t>> input);
|
||||
|
||||
std::vector<std::vector<std::vector<real_t>>> compute_m(std::vector<std::vector<real_t>> input);
|
||||
std::vector<std::vector<std::string>> harris_corner_detection(std::vector<std::vector<real_t>> input);
|
||||
|
||||
std::vector<std::vector<real_t>> get_prewitt_horizontal();
|
||||
std::vector<std::vector<real_t>> get_prewitt_vertical();
|
||||
std::vector<std::vector<real_t>> get_sobel_horizontal();
|
||||
std::vector<std::vector<real_t>> get_sobel_vertical();
|
||||
std::vector<std::vector<real_t>> get_scharr_horizontal();
|
||||
std::vector<std::vector<real_t>> get_scharr_vertical();
|
||||
std::vector<std::vector<real_t>> get_roberts_horizontal();
|
||||
std::vector<std::vector<real_t>> get_roberts_vertical();
|
||||
|
||||
MLPPConvolutionsOld();
|
||||
|
||||
protected:
|
||||
static void _bind_methods();
|
||||
|
||||
std::vector<std::vector<real_t>> _prewitt_horizontal;
|
||||
std::vector<std::vector<real_t>> _prewitt_vertical;
|
||||
std::vector<std::vector<real_t>> _sobel_horizontal;
|
||||
std::vector<std::vector<real_t>> _sobel_vertical;
|
||||
std::vector<std::vector<real_t>> _scharr_horizontal;
|
||||
std::vector<std::vector<real_t>> _scharr_vertical;
|
||||
std::vector<std::vector<real_t>> _roberts_horizontal;
|
||||
std::vector<std::vector<real_t>> _roberts_vertical;
|
||||
};
|
||||
|
||||
#endif // Convolutions_hpp
|
||||
Loading…
Reference in New Issue
Block a user