Hello forum,
Ive been trying to write the code for the standard hough circle detection but have not succeded. The code (very simple) is shown below. Basically i perform canny edge detection and then loop through the output and draw a circle when the pixel is not a zero.
int main(int argc, char** argv)
{
image = imread("image.png",CV_LOAD_IMAGE_GRAYSCALE);
image.copyTo(output);
Canny(output, output, 100, 200, 3);
Mat drawing = Mat::zeros(image.size(), CV_8UC1);
for (int i = 0; i < output.rows; i++)
for (int j = 0; j < output.cols; j++)
if (output.at(i, j) != 0) circle(drawing, Point(i, j), 4, 10, 1, 8, 0);
}
The problem is, i thought that when 2 circles are drawn overlapping each other, the intersecting pixels would be "brighter". I dont think I should draw each circle on a separate matrix to be added after the double for loop so is there anyway I can write the standard HCT without having too many matrices ?
Haziq
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