我试图识别这个黑色多边形周围的轮廓,我需要访问这些点,但它不适合我.这是输入图像

但是,当我尝试执行以下代码时,它没有给出预期的结果,这意味着它应该.

CanvasFrame cnvs=new CanvasFrame("Polygon");

cnvs.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);

CvMemStorage storage=CvMemStorage.create();

CvSeq squares = new CvContour();

squares = cvCreateSeq(0, sizeof(CvContour.class), sizeof(CvSeq.class), storage);

String path="project/Test/img/black.png";

IplImage src = cvLoadImage(path);

IplImage gry=cvCreateImage(cvGetSize(src),IPL_DEPTH_8U,1);

cvCvtColor(src, gry, CV_BGR2GRAY);

cvThreshold(gry, gry, 230, 255, CV_THRESH_BINARY_INV);

cnvs.showImage(gry);

cvFindContours(gry, storage, squares, Loader.sizeof(CvContour.class), CV_RETR_LIST, CV_CHAIN_APPROX_NONE);

CvSeq ss=null;

CvSeq tmp=null;

int ii=0;

for (ss=squares; ss!=null; ss=ss.h_next()) {

tmp=cvApproxPoly(ss, sizeof(CvContour.class), storage, CV_POLY_APPROX_DP, 8, 0);

System.out.println("index "+ii+" points "+tmp.total()+" area "+cvContourArea(ss, CV_WHOLE_SEQ, 0));

cvDrawContours(src, ss, CvScalar.RED, CV_RGB(248, 18, 18), 1, -1, 8);

//drawPoly(src, tmp);

}

IplConvKernel mat=cvCreateStructuringElementEx(7, 7, 3, 3, CV_SHAPE_RECT, null);

cvDilate(src, src, mat, CV_C);

cvErode(src, src, mat, CV_C);

cnvs.showImage(src);

saveImage("nw.png", src);

但是,当我检查出来时,它只给出

指数0点8区20179.0

这意味着它只识别多边形的8个点,但它应该是12个点.

请一些人解释这段代码的问题.

这显示了输出图像