for (int i = 0; i < 4; i++)
cv::line(image, vertices[i], vertices[(i + 1) % 4], cv::Scalar(0, 255, 0), 2);
- cv::imshow("output", image);
+ cv::imshow("KCF output", image);
int ret = cv::waitKey(visualize_delay);
if (visualize_delay > 0 && ret != -1 && ret < 128)
break;