pradeepln's profile - activity

This is my code, where it loops over a folder which has 745 images. It loops over every image and deoes comparison with the 745 images in the same folder and writes to a .txt file. So it is about 5,55,000 odd computations. I am releasing the memory allocated to images and the pointer arrays as and when it is no longer required but still I am running out of memory. What could be the reason? How to solve this?

int main(int argc, char *argv[]) {

high_resolution_clock::time_point t1 = high_resolution_clock::now();

int  lp, up, vp, all, preprocessImage, displayResults;
float lpThreshold, upThreshold, vpThreshold;

string configFile = argv[1];

ifstream fin(configFile);
string line;
istringstream sin;


while (getline(fin, line)) {
    sin.str(line.substr(line.find("=") + 1));
    if (line.find("preprocessImage") != std::string::npos) {
        sin >> preprocessImage;
    }
    else if (line.find("flaglp") != std::string::npos) {
        sin >> lp;
    }
    else if (line.find("flagup") != std::string::npos) {
        sin >> up;
    }
    else if (line.find("flagvp") != std::string::npos) {
        sin >> vp;
    }
    else if (line.find("all") != std::string::npos) {
        sin >> all;
    }
    else if (line.find("lpThreshold") != std::string::npos) {
        sin >> lpThreshold;
    }
    else if (line.find("upThreshold") != std::string::npos) {
        sin >> upThreshold;
    }
    else if (line.find("vpThreshold") != std::string::npos) {
        sin >> vpThreshold;
    }
    else if (line.find("displayResults") != std::string::npos) {
        sin >> displayResults;
    }
    sin.clear();
}

std::cout << "Configuration:" << endl;
std::cout << "----------------" << endl;

std::cout << "preprocessImage: " << preprocessImage << std::endl;
std::cout << "lp: " << lp << std::endl;
std::cout << "up: " << up << std::endl;
std::cout << "vp: " << vp << std::endl;
std::cout << "all: " << all << std::endl;
std::cout << "displayResults: " << displayResults << std::endl;
std::cout << "lpThreshold: " << lpThreshold << std::endl;
std::cout << "upThreshold: " << upThreshold << std::endl;
std::cout << "vpThreshold: " << vpThreshold << std::endl;
std::cout << " " << endl;

int** lp1 = nullptr;
int** up1 = nullptr;
int** vp1 = nullptr;

int** lp2 = nullptr;
int** up2 = nullptr;
int** vp2 = nullptr;

int lp1Length, lp2Length, up1Length, up2Length, score = 0;
Mat img1, img2, inv1, inv2;
float d1, d2, d3;
int count = 1;

ofstream myfile;
myfile.open("EV_all_10_10_0.7.txt");
myfile << " ,";
vector<cv::String> fn1;
glob("preprocessed_cpp/*.jpg", fn1, false);
size_t count1 = fn1.size();

for (size_t i = 0; i < count1; i++)
{
    string name = fn1[i];
    int slashPos = name.find("\\");
    name = name.substr(slashPos + 1);
    int jpgPos = name.find(".jpg");
    name = name.substr(0, jpgPos);
    myfile << name;

    if (i == (count1 - 1))
    {
        myfile << "\n";
    }
    else
    {
        myfile << ",";
    }


}




for (size_t i = 0; i < count1; i++)
{

    string name = fn1[i];
    int slashPos = name.find("\\");
    name = name.substr(slashPos + 1);
    int jpgPos = name.find(".jpg");
    name = name.substr(0, jpgPos);
    myfile << name;
    myfile << ",";


    img1 = imread(fn1[i], 0);

    if (preprocessImage)
    {
        img1 = preProcess(img1);
    }

    if (lp)
    {
        lp1 = findLowerPixels(img1);
        lp1Length = index;

    }

    if (up)
    {
        up1 = findUpperPixels(img1);
        up1Length = index;
    }

    if (vp)
    {
        inv1 = 255 - img1;
        thinning(inv1);

        vp1 = verticalProjection(inv1);
    }


    if (all)
    {
        lp1 = findLowerPixels(img1);
        lp1Length = index;

        up1 = findUpperPixels(img1);
        up1Length = index;

        inv1 = 255 - img1;
        thinning(inv1);

        vp1 = verticalProjection(inv1);

    }

    vector<cv::String> fn2;
    glob("preprocessed_cpp/*.jpg", fn2, false);
    size_t count2 = fn2.size();

    for (size_t j = 0; j < count2; j++)
    {
        img2 = imread(fn2[j], 0);
        score = 0;
        if (preprocessImage)
        {
            img2 = preProcess(img2);
        }


        if (lp ...