opencv如何在java中绘制minAreaRect [英] opencv how to draw minAreaRect in java

问题描述

我正在尝试从 minAreaRect 绘制旋转的矩形，但我在 python 中只找到了代码.

Hi I am trying to draw the rotated rect from minAreaRect but I find only code in python.

rect = cv2.minAreaRect(cnt)
box = cv2.cv.BoxPoints(rect)
box = np.int0(box)
cv2.drawContours(im,[box],0,(0,0,255),2)

如何在java中绘制它?

How to draw it in java?

推荐答案

我知道这个问题很老了，但最近我遇到了同样的问题，所以我决定在这里发布答案.

I know this question is old, but recently I had the same problem so I decided to post the answer here.

不幸的是，我在 Android 上使用的 OpenCV 版本没有支持 RotatedRect 作为参数的方法 rectangle.所以我不得不即兴发挥.

Unfortunately, the OpenCV version I'm using on Android doesnt have the method rectangle that support RotatedRect as paramenter. So I had to improvise.

    Point points[] = new Point[4];
    rect.points(points);
    for(int i=0; i<4; ++i){
        Core.line(init, points[i], points[(i+1)%4], new Scalar(255,255,255));
    }

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