检测在Java中使用CornerHarris与OpenCV的图像的四角 [英] Detect four corners of an image using CornerHarris in JAVA with openCV

问题描述

我想使用的OpenCV CornerHarris方法在我的Andr​​oid应用程序，以检测我通过在图像的四角。我已成功地通过影像分为CornerHarris。但我需要用圆圈来表示图像的四角。这是到目前为止我写的code：

I am trying to use CornerHarris method of openCV in my android application to detect the four corners of the image that I pass in. I have managed to pass the the image into CornerHarris. But I need to indicate the four corners of the image by circles. This is the code that I have written so far:

private Mat findCorners(Mat original_image) {
        Mat imgSource = original_image;
        // Mat untouched = original_image.clone();

        // convert the image to black and white
        Imgproc.cvtColor(imgSource, imgSource, Imgproc.COLOR_BGR2GRAY);

        // convert the image to black and white does (8 bit)
        Imgproc.Canny(imgSource, imgSource, 200, 200);

        Imgproc.cornerHarris(imgSource, imgSource, 2, 3, 0.04, 1);

        for(int y = 0; y < imgSource.height(); y++){

            for(int x = 0; x < imgSource.width(); x++){

                //need to complete here.

            }
        }
        Highgui.imwrite(baseDir + "/mediaAppPhotos/harris.png", imgSource);
}

以下是我跟着教程（Python和C ++）：

Following are the tutorials I followed (in python and C++):

<一个href=\"http://glowingpython.blogspot.com/2011/10/corner-detection-with-opencv.html?showComment=1382874899072#c5130082031283749433\"相对=nofollow>角检测​​与OpenCV的

我需要知道如何完成这个code和得到它的工作。任何帮助AP preciated！

I need to to know how to complete this code and get it working. Any help is appreciated!

[OpenCV的]角球检测：哈里斯角落里，世托马西角点检测

修改

我要找到这种类似这样的图像的角落：

I want to find corners of this kind of an image like this:

推荐答案

各种技术来查找图像的边缘。

Various techniques to find edges in the image.

1. 提取白色与HSV INRANGE（）


2. 使用霍夫变换线检测线。


3. 使用检测线的角度找到了角落。

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