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i have code for reading data from text file to put them into array of double element the code has no error in compiling but when executing and print the element of array i found they have no data, where is the error the text file has the data and loaded correctly

this is my code:

    double** TrainData = new double*[NumTrn];
for (int i = 0; i < NumTrn; i++)
    TrainData[i] = new double[NumFe];

double** TestData = new double*[NumTst];
for (int i = 0; i < NumTst; i++)
    TestData[i] = new double[NumFe];

int* TrainLabels = new int[NumTrn];
int* TestLabels = new int[NumTst];

const char* trnfile = "Winners.trn";
const char* tstfile = "Winners.tst";

ifstream Trn(trnfile);
ifstream Tst(tstfile);
for (int i = 0; i < NumTrn; i++)
{
    Trn >> TrainLabels[i];
    for (int j = 0; j < NumFe; j++)
    {
        Trn >> TrainData[i][j];
        cout << TrainLabels[i] << "\t" << TrainData[i][j] << "\t";
    }
    cout << "\n";
}

for (int i = 0; i < NumTst; i++)
{
    Tst >> TestLabels[i];
    //cout<<TestLabels[i]<<"\t";
    for (int j = 0; j < NumFe; j++)
        Tst >> TestData[i][j];
}

thanks

i have code for reading data from text file to put them into array of double element the code has no error in compiling but when executing and print the element of array i found they have no data, where is the error the text file has the data and loaded correctly

this is my code:

    double** TrainData = new double*[NumTrn];
for (int i = 0; i < NumTrn; i++)
    TrainData[i] = new double[NumFe];

double** TestData = new double*[NumTst];
for (int i = 0; i < NumTst; i++)
    TestData[i] = new double[NumFe];

int* TrainLabels = new int[NumTrn];
int* TestLabels = new int[NumTst];

const char* trnfile = "Winners.trn";
const char* tstfile = "Winners.tst";

ifstream Trn(trnfile);
ifstream Tst(tstfile);
for (int i = 0; i < NumTrn; i++)
{
    Trn >> TrainLabels[i];
    for (int j = 0; j < NumFe; j++)
    {
        Trn >> TrainData[i][j];
        cout << TrainLabels[i] << "\t" << TrainData[i][j] << "\t";
    }
    cout << "\n";
}

for (int i = 0; i < NumTst; i++)
{
    Tst >> TestLabels[i];
    //cout<<TestLabels[i]<<"\t";
    for (int j = 0; j < NumFe; j++)
        Tst >> TestData[i][j];
}

thanks

i can't change croped_ image size as it is detected area from another image and i want to put it in center of black image in order to make it with another size without using resizing as resize function make my data low accuracy

i need to copy a cropped image with different size to the center of another black image with fixed size , when i use copyTo function i have an error

the function as:

Mat black_image(55,50,CV_8UC1,Scalar(0));
crop_image.copyTo(black_image(Rect((black_image.cols - crop_image.cols )/2, (black_image.rows +crop_image.rows )/2,crop_image.cols, crop_image.rows)));

the error as:

opencv error:assertion failed obj->size size<cols,rows> core\src\matrix line 1392

i downloaded knn c++ code this code takes two text files train file and test file each has vectors and its labels the vector in text file is look like: 1.2,2.2,5.6,....,1 2.1,1,5,5.5,....,1 1.2,2.5,3.6,....,2 the last index in vector is the label for this vector the code read the data from these files with this function

bool readData4File (char *filename, TRAINING_EXAMPLES_LIST *rlist, 
                    int *rlistExamples)
{
    FILE *fp = NULL;
    int len = 0;
    char line[LINE_MAX+1];
    int lineSize = LINE_MAX;
    TrainingExample *TEObj;
    int index = 0;
    int numExamples = 0;

    *rlistExamples = 0;

    line[0] = 0;

    if((fp = fopen (filename, "r")) == NULL)
    {
        cout<<"Error in opening file."<<endl;
        return false;
    }

    //Initialize weights to random values
    srand (time(NULL));

    char *tmp;
    int tmpParams = 0; //NO_OF_ATT;
    int i = 0;
    double cd = 0.0;

    /* Read the data file line by line */
    while((len = GetLine (line, lineSize, fp))!=0) 
    {
        TEObj = new TrainingExample ();
        tmp = strtok (line,",");
        while (tmp != NULL)
        {
            cd = atof (tmp);
            TEObj->Value[tmpParams] = cd;
            tmpParams ++;

            tmp = strtok (NULL, ",");

            if(tmpParams == NO_OF_ATT)
            {
                tmpParams = 0;
                cd = 0.0;
                line[0] = 0;
                numExamples ++;

                //Not using this normalization anymore. 
                // N(y) = y/(1+y)
                // Doing normalization by standard deviation and mean
                //TEObj->NormalizeVals ();

                /* Generating random weights for instances. */
                /* These weights are used in instance WKNN  */
                double rno = (double)(rand () % 100 + 1);
                TEObj->Weight = rno/100;
                TEObj->index = index++;
                TEObj->isNearest2AtleastSome = false;
                break;
            }
        }

        rlist->insert (rlist->end(), *TEObj);

        delete TEObj;
    }

then the code send the list of vectors in order to classify test vectors i have 1405 train vector and 810 test vector, when running the code read the number of vectors as 1405 and 810 but the list of training and text vectors has 2810 and 1620 index what is the content of these lists and why they have the double number of train and test vectors! my result is 183% for accuracy as the code send the list not the examples why!

i'm not totally sure about this code but i need from my code to obtain accuracy by comparing the result of test images classes with the true classes for these images

Ok, do you have a better code for this function

i have a self organizing map c++ code which give me an accuracy for recognition system but when using this code i have a wrong accuracy by classification function anyone here can tell me where is the error with this code or give me better code for accuracy

 void  Network::classify()
{float acc;

int f=0;
for(int i=0; i<TstImgNum;i++)
{
    if((ilayer->ID[i])==label[i])
        f++;
}
 acc=((float) f / (float)TstImgNum) *100;
cout <<"\nSOM ACC="<<(((float) f / (float)TstImgNum) *100)<<"%";
cout <<"\nSOM ACC="<<acc<<"%/n";
}

i need to calculate histogram for uniform lbp image. parameters in calchist with lbp is image= source lbpimage (which i need it's histogram) nimage= number of source image channel= index of channel (for gray image is 0) mask= Mat() (for full image) output= the histogram image (which result) dims= Histogram dimensionality (1) histsize= number of bins (256 for gray level bin for each pixel) ranges= 0,256 (for gray level) uniform= true (ranges= { , } accumulate= false (for one histogram from one image)

this is for normal lbp what about uniform lbp (dims, histsize, ranges, ) is there any difference

thanks

ok i will take the short answer and ignore them

when i run my code i have these outputs

'mycode.exe': Loaded 'D:\Projects\mycodehend\mycodefinal\Release\mycode.exe', Symbols loaded.
'mycode.exe': Loaded 'C:\Windows\System32\ntdll.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\kernel32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\KernelBase.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'D:\opencvhend\opencvh\build\x86\vc10\bin\opencv_core249.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msvcp100.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msvcr100.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'D:\opencvhend\opencvh\build\x86\vc10\bin\opencv_highgui249.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\user32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\gdi32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\lpk.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\usp10.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msvcrt.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\ole32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\rpcrt4.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\oleaut32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\advapi32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\sechost.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.18201_none_ec80f00e8593ece5\comctl32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\avifil32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\winmm.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msacm32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msvfw32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\shell32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\shlwapi.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\avicap32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\version.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'D:\opencvhend\opencvh\**strong text**build\x86\vc10\bin\opencv_imgproc249.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\imm32.dll', Cannot find or open the PDB file
'mycode.exe': Loaded 'C:\Windows\System32\msctf.dll', Cannot find or open the PDB file
The program '[4640] mycode.exe: Native' has exited with code 0 (0x0).

i have an image and i want to compute and draw its histogram i use the calchist function but i'm confused about its previous calculations now i'm a new a bout the c function which deal with memory so i need an explain to this code or anew easiest code for calchist function

this is my code:

Mat Histogram::BuildHistogram(Mat srcImage,bool accumulate){
Mat histMat;
//compute histogram
int *c=(int *)calloc(sizeof(int),_channels.size());
for(int i=0;i<_channels.size();i++)
{
c[i]=_channels[i];

}

int *h=(int *)calloc(sizeof(int),_channels.size());
for(int i=0;i<_channels.size();i++)
{
h[i]=_histSize[_channels[i]];

}

float **ranges=(float **)calloc(sizeof(float*),_channels.size());
int size=_channels.size();
for(int i=0;i<size;i++)>
{
float *x=(float *)calloc(sizeof(float),2);
int index=2*_channels[i];
x[0]=_histRange[index];
x[1]=_histRange[index+1];
ranges[i]=x;

}
if(accumulate==true)
_histMat.copyTo(histMat);

calcHist(&srcImage,1,c,_mask,histMat,_channels.size(),h,(const float **)ranges, true, accumulate);
for(int i=0;i<size;i++)>
{
free(ranges[i]);
}
free(ranges);
free(c);
free(h);
//normalize histogram
normalize( histMat, _histMat,1,0,NORM_L1);
Scalar v=cv::sum(_histMat);
if(accumulate==true)
histMat.copyTo(_histMat);
//return histogram
return histMat;
}

ok i do it but when i reach the imwrite function i have this error

Unhandled exception at 0x7592812f in mycode.exe: Microsoft C++ exception: cv::Exception at memory location 0x001aefe4.. opencv error: unspecified error<could not find a writer for the specified extension> in cv:: imwrite_, file......\ opencv\modules\highui\src\loadsave.cpp,line275

or can i convert it from vector of mat into just one mat image

i re-edit the question pls see it and tell me can i use the histogramsimg mat vector for my need instead of converting the histogrames vector or can i convert it from vector of mat into just one mat image

i run the code with this new resize function but i have the same error

how can i do this sorry i don't understand i need the image to be 50*50

i i need to convert vector of float to mat image then use this image in imgshow and resize function i have this function but it doesn't work

   memcpy(lbp.data,Vtrn.data(),Vtrn.size()*sizeof(float)); 
    resize(lbp, lbp, cvSize(50, 50),100,100,1); //in order to make all image same size
    imwrite(In.vectorofotrainpath[i].c_str(),lbp);// true with mat image or not

i have this error

   Windows has triggered a breakpoint in mycode.exe.
  This may be due to a corruption of the heap, which indicates a bug in mycode.exe or any of the DLLs it has loaded.

  This may also be due to the user pressing F12 while mycode.exe has focus.

the vector i want to convert is the histograms vector i obtained from this function

vector<float> spatialhist::spatialHistogramforknnorsvm( const Mat& lbpImage, const Size& grid)
{
    vector<float> histograms;
    histograms.resize(grid.width*grid.height*sizeb);
     int width=lbpImage.cols/grid.width;
    int height=lbpImage.rows/grid.height;
    int cnt=0;
    vector<Mat> histogramsimage;
    //#pragma omp parallel for
for(int i=0;i<grid.height;i++)
{
    for(int j=0;j<grid.width;j++)
    {
        Mat cell=lbpImage(Rect(j*width,i*height,width,height));
        Mat cell_hist=computeHistogram(cell);
        histogramsimage.push_back(cell_hist);
        //imshow("FFF",cell_hist);

        Mat tmp_feature;
       Mat feature =cell_hist.reshape(1,1);
        feature.convertTo(tmp_feature,CV_32FC1);

        float * ptr=tmp_feature.ptr<float>(0);
        for(int k=0;k<tmp_feature.cols-1;k++)
        {
            if(ptr[k]==0)
                ptr[k]=1.0/sizeb;
            histograms[(cnt*sizeb)+k]=ptr[k];
          //  cerr << ptr[k] << endl;
        }
        cnt++;
    }

}


return histograms;
}

thanks that's right it work now

i have acode for check the lbp code for pgm image if it is uniform code or not but when i run the code i have this vector out of range error: debug assertion failed vector out of range this is my code:

  void LBPFeatures::initUniform( int check)
   {

lookup.resize(255);
int index=0;

for(int i=0;i<=255;i++)
{
    bool status=checkUniform(check);
    if(status==true)
    {
        lookup[i]=index;
        index++;
    }
    else
    {
        lookup[i]=59;
    }
}
spatialhist Hist;
 Hist.initHistogram();

}

i have a code but with error

void LBPFeatures::computeuniformlbp(Mat image,Mat &dst)
{
    uchar *ptr=image.data;
    image.copyTo(dst);
    uchar *optr=dst.data;
    int width=image.cols;
    int height=image.rows;

for(int i=1;i<height-1;i++)
{
    for(int j=1;j<width-1;j++)
    {
        int center=(int)ptr[j+i*width];
        unsigned char code=0;

        //for(int k=7;k>=0;k++)

        code|=((int)ptr[(j-1)+(i-1)*width] >=center)<<7;
        code|=((int)ptr[j+(i-1)*width] >=center)<<6 ;
        code|=((int)ptr[(j+1)+(i-1)*width] >=center)<<5 ;
        code|=((int)ptr[(j+1)+(i)*width] >=center)<<4 ;
        code|=((int)ptr[(j+1)+(i+1)*width] >=center)<<3 ;
        code|=((int)ptr[j+(i+1)*width] >=center)<<2 ;
        code|=((int)ptr[j-1+(i+1)*width] >=center)<<1 ;
        code|=((int)ptr[j-1+(i)*width] >=center)<<0 ;

       // int check=0;
        //check=code;
        //heck if the code is uniform code
        //encode only if it is a uniform code else
        //assign it a number 255
        optr[j+i*width]=lookup[code];

    }
}
initUniform();
}

can you find my error