使用 OpenCV 进行椭圆检测

2022-01-09 00:00:00 opencv computer-vision image-processing android java

我想使用 OpenCV for Android 检测椭圆，使用 OpenCV 2.4.1 包中包含的 Tutorial 2-Basic 作为起点.请注意，我的椭圆将是一个完美的 Photoshop 椭圆.

I would like to detect ellipses with OpenCV for Android, using the Tutorial 2-Basic included with OpenCV 2.4.1 package as a starting point. Note that my ellipse would be a perfect-photoshop one.

据我了解，使用HoughCircles"只会找到完美(或左右)的圆圈，因此会忽略椭圆.

From what I understand, using the "HoughCircles" will only find perfect (or so) circles, thus leaving ellipses out.

任何帮助将不胜感激，因为我是 OpenCV 的初学者

Any help would be much appreciated as I am a total beginner at OpenCV

这是我迄今为止尝试过的

This is what I've tried so far

    case Sample2NativeCamera.VIEW_MODE_CANNY: (ignore the Canny mode...)

        capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
        Imgproc.HoughCircles(mGray, mCircles, Imgproc.CV_HOUGH_GRADIENT, 1, 20);
        Log.d("Ellipse Points", " X " + mCircles.get(1,1)[0] + mCircles.get(1, 1)[1]);

        break;

如果您认为任何更多信息可能有用，请告诉我.

If you think any more info could be useful, please let me know.

推荐答案

您的问题的一个可能解决方案类似于此线程 Detection of图片上的硬币(和适合的椭圆) .

One possible solution to your problem is similar to this thread Detection of coins (and fit ellipses) on an image .

你应该看看opencv的函数fitEllipse.

You should take a look a opencv's function fitEllipse.

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