现可使用CNN分类器判断装甲板及其数字。
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xinyang
51
armor/include/armor_finder/classifier/classifier.h
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51
armor/include/armor_finder/classifier/classifier.h
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//
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// Created by xinyang on 19-4-19.
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//
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#ifndef _CLASSIFIER_H_
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#define _CLASSIFIER_H_
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#include <Eigen/Dense>
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#include <opencv2/core/eigen.hpp>
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#include <vector>
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#include <string>
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#include <opencv2/core.hpp>
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using namespace std;
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using namespace Eigen;
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class Classifier {
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private:
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bool state;
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vector<vector<MatrixXd>> conv1_w, conv2_w;
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vector<double> conv1_b, conv2_b;
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MatrixXd fc1_w, fc2_w;
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VectorXd fc1_b, fc2_b;
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vector<vector<MatrixXd>> load_conv_w(const string &file);
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vector<double> load_conv_b(const string &file);
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MatrixXd load_fc_w(const string &file);
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VectorXd load_fc_b(const string &file);
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MatrixXd softmax(const MatrixXd &input);
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MatrixXd relu(const MatrixXd &input);
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vector<vector<MatrixXd>> apply_bias(const vector<vector<MatrixXd>> &input, const vector<double> &bias);
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vector<vector<MatrixXd>> relu(const vector<vector<MatrixXd>> &input);
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vector<vector<MatrixXd>> pool(const vector<vector<MatrixXd>> &input, int size);
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vector<vector<MatrixXd>> pand(const vector<vector<MatrixXd>> &input, int val);
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MatrixXd conv(const MatrixXd &filter, const MatrixXd &input);
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vector<vector<MatrixXd>> conv2(const vector<vector<MatrixXd>> &filter, const vector<vector<MatrixXd>> &input);
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MatrixXd flatten(const vector<vector<MatrixXd>> &input);
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public:
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explicit Classifier(const string &folder);
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~Classifier() = default;
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MatrixXd calculate(const vector<vector<MatrixXd>> &input);
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explicit operator bool() const;
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int operator()(const cv::Mat &image);
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};
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#endif //RUNCNN_CLASSIFIER_H
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269
armor/src/armor_finder/classifier/classifier.cpp
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269
armor/src/armor_finder/classifier/classifier.cpp
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//
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// Created by xinyang on 19-4-19.
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//
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#include <armor_finder/classifier/classifier.h>
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#include <log.h>
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#include <cstdio>
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#include <iostream>
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vector<vector<MatrixXd>> Classifier::load_conv_w(const string &file){
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vector<vector<MatrixXd>> result;
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FILE *fp = fopen(file.data(), "r");
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if(fp == nullptr){
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LOGE("%s open fail!", file.data());
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state = false;
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return result;
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}
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int channel_in, channel_out, row, col;
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fscanf(fp, "%d %d %d %d", &channel_in, &channel_out, &row, &col);
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for(int o=0; o<channel_in; o++){
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vector<MatrixXd> sub;
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for(int i=0; i<channel_out; i++){
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MatrixXd f(row, col);
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for(int r=0; r<row; r++){
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for(int c=0; c<col; c++){
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fscanf(fp, "%lf", &f(r, c));
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}
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}
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sub.emplace_back(f);
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}
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result.emplace_back(sub);
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}
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return result;
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}
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vector<double> Classifier::load_conv_b(const string &file){
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vector<double> result;
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FILE *fp = fopen(file.data(), "r");
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if(fp == nullptr){
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LOGE("%s open fail!", file.data());
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state = false;
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return result;
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}
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int len;
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fscanf(fp, "%d", &len);
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for(int i=0; i<len; i++) {
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double v;
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fscanf(fp, "%lf", &v);
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result.emplace_back(v);
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}
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return result;
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}
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MatrixXd Classifier::load_fc_w(const string &file){
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FILE *fp = fopen(file.data(), "r");
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if(fp == nullptr){
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LOGE("%s open fail!", file.data());
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state = false;
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return MatrixXd::Zero(1,1);
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}
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int row, col;
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fscanf(fp, "%d %d", &col, &row);
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MatrixXd mat(row, col);
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for(int c=0; c<col; c++){
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for(int r=0; r<row; r++){
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fscanf(fp, "%lf", &mat(r, c));
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}
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}
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return mat;
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}
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VectorXd Classifier::load_fc_b(const string &file){
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FILE *fp = fopen(file.data(), "r");
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if(fp == nullptr){
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LOGE("%s open fail!", file.data());
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state = false;
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return VectorXd::Zero(1,1);
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}
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int row;
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fscanf(fp, "%d", &row);
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VectorXd vec(row, 1);
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for(int r=0; r<row; r++){
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fscanf(fp, "%lf", &vec(r));
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}
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return vec;
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}
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MatrixXd Classifier::softmax(const MatrixXd &input){
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MatrixXd tmp = input.array() - input.maxCoeff();
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return tmp.array().exp() / tmp.array().exp().sum();
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}
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vector<vector<MatrixXd>> Classifier::pool(const vector<vector<MatrixXd>> &input, int size){
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vector<vector<MatrixXd>> output;
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for(int sample=0; sample<input.size(); sample++) {
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vector<MatrixXd> sub;
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for (int channel = 0; channel < input[0].size(); channel++) {
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MatrixXd tmp(input[0][0].rows() / size, input[0][0].cols() / size);
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for (int row = 0; row < input[0][0].rows() / size; row++) {
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for (int col = 0; col < input[0][0].cols() / size; col++) {
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double val = 0;
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for (int x = 0; x < size; x++) {
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for (int y = 0; y < size; y++) {
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val += input[sample][channel](row * size + x, col * size + y);
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}
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}
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tmp(row, col) = val / size / size;
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}
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}
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sub.emplace_back(tmp);
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}
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output.emplace_back(sub);
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}
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return output;
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}
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vector<vector<MatrixXd>> Classifier::apply_bias(const vector<vector<MatrixXd>> &input, const vector<double> &bias){
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assert(input[0].size()==bias.size());
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vector<vector<MatrixXd>> result;
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for(int samples=0; samples<input.size(); samples++){
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vector<MatrixXd> sub;
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for(int channels=0; channels<input[0].size(); channels++){
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MatrixXd mat = input[samples][channels].array() + bias[channels];
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sub.emplace_back(mat);
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}
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result.emplace_back(sub);
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}
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return result;
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}
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MatrixXd Classifier::relu(const MatrixXd &input){
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return input.unaryExpr([](double val){
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return (val>0)?(val):(0);
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});
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}
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vector<vector<MatrixXd>> Classifier::relu(const vector<vector<MatrixXd>> &input){
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vector<vector<MatrixXd>> result;
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for(int samples=0; samples<input.size(); samples++){
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vector<MatrixXd> sub;
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for(int channels=0; channels<input[0].size(); channels++){
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sub.emplace_back(relu(input[samples][channels]));
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}
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result.emplace_back(sub);
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}
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return result;
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}
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vector<vector<MatrixXd>> Classifier::pand(const vector<vector<MatrixXd>> &input, int val){
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vector<vector<MatrixXd>> result;
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for(int sample=0; sample<input.size(); sample++){
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vector<MatrixXd> sub;
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for(int channels=0; channels<input[0].size(); channels++){
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MatrixXd mat = MatrixXd::Zero(input[0][0].rows()+2*val, input[0][0].cols()+2*val);
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mat.block(val, val, input[0][0].rows(), input[0][0].cols()) = input[sample][channels];
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sub.emplace_back(mat);
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}
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result.emplace_back(sub);
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}
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return result;
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}
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MatrixXd Classifier::conv(const MatrixXd &filter, const MatrixXd &input){
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int result_rows = input.rows()-filter.rows()+1;
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int result_cols = input.cols()-filter.cols()+1;
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MatrixXd result(result_rows, result_cols);
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for(int row=0; row<result_rows; row++){
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for(int col=0; col<result_cols; col++){
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double val=0;
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for(int x=0; x<filter.cols(); x++){
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for(int y=0; y<filter.cols(); y++){
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val += input(row+x, col+y) * filter(x,y);
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}
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}
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result(row, col) = val;
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// result(row, col) = (input.block(row, col, size, size).array() * input.array()).sum();
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}
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}
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return result;
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}
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vector<vector<MatrixXd>> Classifier::conv2(const vector<vector<MatrixXd>> &filter, const vector<vector<MatrixXd>> &input){
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if(filter.size() != input[0].size()){
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LOGE("shape du not match, which is filter.size=%d, input[0].size()=%d", filter.size(), input[0].size());
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exit(-1);
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}
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vector<vector<MatrixXd>> result;
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int result_rows = input[0][0].rows()-filter[0][0].rows()+1;
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int result_cols = input[0][0].cols()-filter[0][0].cols()+1;
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for(int col=0; col<input.size(); col++){
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vector<MatrixXd> sub;
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for(int row=0; row<filter[0].size(); row++){
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MatrixXd val = MatrixXd::Zero(result_rows, result_cols);
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for(int x=0; x<filter.size(); x++){
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val += conv(filter[x][row], input[col][x]);
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}
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sub.emplace_back(val);
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}
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result.emplace_back(sub);
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}
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return result;
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}
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MatrixXd Classifier::flatten(const vector<vector<MatrixXd>> &input){
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int ones = input[0][0].rows()*input[0][0].cols();
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int channels = input[0].size();
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int samples = input.size();
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int row = input[0][0].rows();
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int col = input[0][0].cols();
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MatrixXd output(channels*ones,samples);
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for(int s=0; s<samples; s++) {
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for(int r=0, cnt=0; r<row; r++){
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for(int c=0; c<col; c++){
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for (int i = 0; i < channels; i++) {
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output(cnt++, s) = input[s][i](r, c);
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}
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}
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}
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}
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return output;
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}
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Classifier::Classifier(const string &folder) : state(true){
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conv1_w = load_conv_w(folder+"conv1_w");
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conv1_b = load_conv_b(folder+"conv1_b");
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conv2_w = load_conv_w(folder+"conv2_w");
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conv2_b = load_conv_b(folder+"conv2_b");
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fc1_w = load_fc_w(folder+"fc1_w");
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fc1_b = load_fc_b(folder+"fc1_b");
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fc2_w = load_fc_w(folder+"fc2_w");
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fc2_b = load_fc_b(folder+"fc2_b");
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}
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//#define PRINT_MAT(name) (cout << #name":\n" << name << endl)
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//#define PRINT_MULTI_MAT(name) (cout << #name":\n" << name[0][0] << endl)
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//#define PRINT_MAT_SHAPE(name) LOGM(#name":(%d, %d)", name.rows(), name.cols())
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//#define PRINT_MULTI_MAT_SHAPE(name) LOGM(#name":(%d, %d)", name[0][0].rows(), name[0][0].cols())
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MatrixXd Classifier::calculate(const vector<vector<MatrixXd>> &input) {
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vector<vector<MatrixXd>> conv1_result = relu(apply_bias(conv2(conv1_w, input), conv1_b));
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vector<vector<MatrixXd>> pool1_result = pool(conv1_result, 2);
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vector<vector<MatrixXd>> conv2_result = relu(apply_bias(conv2(conv2_w, pool1_result), conv2_b));
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vector<vector<MatrixXd>> pool2_result = pool(conv2_result, 2);
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MatrixXd flattened = flatten(pool2_result);
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MatrixXd y1 = fc1_w * flattened;
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y1.colwise() += fc1_b;
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MatrixXd fc1 = relu(y1);
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MatrixXd y2 = fc2_w * fc1;
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y2.colwise() += fc2_b;
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MatrixXd fc2 = softmax(y2);
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return fc2;
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}
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Classifier::operator bool() const {
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return state;
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}
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int Classifier::operator()(const cv::Mat &image) {
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MatrixXd x;
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cv2eigen(image, x);
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vector<MatrixXd> sub = {x};
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vector<vector<MatrixXd>> in = {sub};
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MatrixXd result = calculate(in);
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MatrixXd::Index minRow, minCol;
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result.maxCoeff(&minRow, &minCol);
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return minRow;
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}
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