I'm trying to set a new color value to some pixel into a cv::Mat image my code is below:
Mat image = img;
for(int y=0;y<img.rows;y++)
{
for(int x=0;x<img.cols;x++)
{
Vec3b color = image.at<Vec3b>(Point(x,y));
if(color[0] > 150 && color[1] > 150 && color[2] > 150)
{
color[0] = 0;
color[1] = 0;
color[2] = 0;
cout << "Pixel >200 :" << x << "," << y << endl;
}
else
{
color.val[0] = 255;
color.val[1] = 255;
color.val[2] = 255;
}
}
imwrite("../images/imgopti"+to_string(i)+".tiff",image);
It seems to get the good pixel in output (with cout) however in the output image (with imwrite) the pixel concerned aren't modified. I have already tried using color.val[0].. I still can't figure out why the pixel colors in the output image dont change. thanks