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#include "Utils.h"
Utils::Utils()
{
}
Utils::~Utils()
{
}
Rect Utils::cropRect(Rect rect, Size size)
{
Point center = (rect.br() + rect.tl())*0.5;
Rect cropped(center.x - size.width / 2, center.y - size.height / 2, size.width, size.height);
return cropped;
}
Scalar Utils::getRectMeanColor(Mat image, Rect rect)
{
Point pts[1][4];
pts[0][0] = Point(rect.x, rect.y);
pts[0][1] = Point(rect.x + rect.width, rect.y);
pts[0][2] = Point(rect.x + rect.width, rect.y + rect.height);
pts[0][3] = Point(rect.x, rect.y + rect.height);
const Point* points[1] = { pts[0] };
int npoints = 4;
// Create the mask with the polygon
Mat1b mask(image.rows, image.cols, uchar(0));
fillPoly(mask, points, &npoints, 1, Scalar(255));
// Compute the mean with the computed mask
Scalar average = mean(image, mask);
return average;
}
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