Threshoding image between certain range

Question

How to Threshold image between certain range? i have done this but it doesn't work.

for (int i=0;i<s.size().height;i++)
{
    for(int j=0;j<s.size().width;j++)
    {
        int k=int (s.at<uchar>(j,i));
        if (k>6 &&  k<10)
            k=255;
        else k=0;
            s.at<uchar>(j,i)=k;
    }
}

What does "doesn't work" mean? What should it do and what happens instead? And which programming language is this? — JJJ, Aug 10 '13 at 11:10
I am using visual studio(c++) opencv . i want to threshold intensities between 6 and 10. — Vivek Mishra, Aug 10 '13 at 11:16

score 1 · Answer 1 · answered Aug 10 '13 at 12:04

1

You get an uchar value, and convert it to integer. Try this :

    uchar k= s.at<uchar>(j,i);
    if (k>6 &&  k<10) {
        k=255;
     }else {
        k=0;
     }
     s.at<uchar>(j,i)=k;

I think it may work.

answered Aug 10 '13 at 12:04

Dimitri Mockelyn

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Threshoding image between certain range

1 Answers1