如何使用cvfitlinejava

我有以下代码：

        [...]cvCvtColor(subtraction, grayBuffer, CV_BGR2GRAY);
        cvThreshold(grayBuffer, grayBuffer, 127, 255, CV_THRESH_BINARY);
        cvFindContours(grayBuffer, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
        //cvFitLine(Mat(contours[0]),lines,2,0,0.01,0.01);
        cvFitLine(contours, CV_DIST_L2, 2, 0.01, 0.01, line);

        int lefty = (int)((int)(-line[2]*line[1]/line[0])+line[3]);
        int righty = (int) ((int)((grayBuffer.width()-line[2])*line[1]/line[0])+line[3]);
        line(grayBuffer.width()-1,0,righty,lefty); [...]´

`

        [...]cvCvtColor(subtraction, grayBuffer, CV_BGR2GRAY);
        cvThreshold(grayBuffer, grayBuffer, 127, 255, CV_THRESH_BINARY);
        cvFindContours(grayBuffer, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
        //cvFitLine(Mat(contours[0]),lines,2,0,0.01,0.01);
        cvFitLine(contours, CV_DIST_L2, 2, 0.01, 0.01, line);

        int lefty = (int)((int)(-line[2]*line[1]/line[0])+line[3]);
        int righty = (int) ((int)((grayBuffer.width()-line[2])*line[1]/line[0])+line[3]);
        line(grayBuffer.width()-1,0,righty,lefty); [...]´

这给了我一个致命的错误

        [...]cvCvtColor(subtraction, grayBuffer, CV_BGR2GRAY);
        cvThreshold(grayBuffer, grayBuffer, 127, 255, CV_THRESH_BINARY);
        cvFindContours(grayBuffer, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
        //cvFitLine(Mat(contours[0]),lines,2,0,0.01,0.01);
        cvFitLine(contours, CV_DIST_L2, 2, 0.01, 0.01, line);

        int lefty = (int)((int)(-line[2]*line[1]/line[0])+line[3]);
        int righty = (int) ((int)((grayBuffer.width()-line[2])*line[1]/line[0])+line[3]);
        line(grayBuffer.width()-1,0,righty,lefty); [...]´

有人知道如何使用fitLine吗

        [...]cvCvtColor(subtraction, grayBuffer, CV_BGR2GRAY);
        cvThreshold(grayBuffer, grayBuffer, 127, 255, CV_THRESH_BINARY);
        cvFindContours(grayBuffer, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
        //cvFitLine(Mat(contours[0]),lines,2,0,0.01,0.01);
        cvFitLine(contours, CV_DIST_L2, 2, 0.01, 0.01, line);

        int lefty = (int)((int)(-line[2]*line[1]/line[0])+line[3]);
        int righty = (int) ((int)((grayBuffer.width()-line[2])*line[1]/line[0])+line[3]);
        line(grayBuffer.width()-1,0,righty,lefty); [...]´

---

谢谢：）

这是一个使用cvFitLine（为处理语言编写，提供setup（）和exit（）方法）的javacv程序：

        [...]cvCvtColor(subtraction, grayBuffer, CV_BGR2GRAY);
        cvThreshold(grayBuffer, grayBuffer, 127, 255, CV_THRESH_BINARY);
        cvFindContours(grayBuffer, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
        //cvFitLine(Mat(contours[0]),lines,2,0,0.01,0.01);
        cvFitLine(contours, CV_DIST_L2, 2, 0.01, 0.01, line);

        int lefty = (int)((int)(-line[2]*line[1]/line[0])+line[3]);
        int righty = (int) ((int)((grayBuffer.width()-line[2])*line[1]/line[0])+line[3]);
        line(grayBuffer.width()-1,0,righty,lefty); [...]´

---

谢谢，但我还是有同样的问题。我在cvFitLine之前使用了cvFindContours，在最后一个函数中出现了以下错误：“#Java运行时环境检测到一个致命错误：#异常#访问(0xc0000005)在pc=0x00007FCA032F84D，pid=10268，tid=3640#JRE版本：7.0#U 13-b20#Java虚拟机：Java热点（TM）64位服务器虚拟机（23.7-b01混合模式windows-amd64压缩oops）#有问题的框架：#C[opencv_imgproc231.dll+0xdf84d]cvFitLine+0x40d###无法写入核心转储。默认情况下，在windows的客户端版本上不启用小型转储`