Rectangle

Rect rect = Rect(10, 10, 100, 100);
rectangle(image, rect, Scalar(255, 0, 0), 4, 8, 0);

Line

Point p1(25, 25), p2(100, 50);
line(image, p1, p2, Scalar(255, 0, 0), 3, 8, 0);

Polygon

Text

putText(image, format("width: %d, height: %d", w, h), Point(50,80), FONT_HERSHEY_SIMPLEX, 1, Scalar(0, 200, 200), 4);

Histogram

파일 저장

• imwrite(~)
• VideoWriter video(~)
  • video.write(frame);
  • video.release;