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Hi @Dhara Shah!

If your object size is always bigger than the noise & also it is closed, you can filter those contours by using the parameter contour Area. Here is an opencv example.

for(unsigned int i=0;i<contours.size(),i++)
{
     double minContourArea= 1000;
     if(contourArea(contours[i])> minContourArea)
     {
         //count this contour
     }

}