// 寻找所有矩形轮廓
// 参数:
// 1. pBinary: 输入二值图像，单通道，位深IPL_DEPTH_8U。
// 2. Size s: 横竖形态选择参数
vectorFindRect(IplImage *src_img, Size s)
{
vectorRectbuf;
IplImage *gray_img = cvCreateImage(cvGetSize(src_img), 8, 1);
cvSmooth(src_img, src_img, CV_GAUSSIAN);    //IplI *arr转mat：mat(arr)
cvCvtColor(src_img, gray_img, CV_BGR2GRAY);
double th_maxArea = (gray_img->width*gray_img->height)*0.5;
double th_minArea = (gray_img->width*gray_img->height)*0.01;
double th_maxRatio = 0.3;  //height/width比
double th_minRatio = 0.01;
Mat element1 = getStructuringElement(MORPH_RECT, s);
//morphologyEx(cvarrToMat(gray_img), cvarrToMat(gray_img), MORPH_CLOSE, element1);
morphologyEx(cvarrToMat(gray_img), cvarrToMat(gray_img), MORPH_DILATE, element1);
IplImage *pBinary = cvCreateImage(cvGetSize(gray_img), 8, 1);
int thresh = Otsu(gray_img);
cvThreshold(gray_img, pBinary, thresh, 255, CV_THRESH_BINARY);
//cvAdaptiveThreshold(gray_img, pBinary, 255, CV_ADAPTIVE_THRESH_MEAN_C, CV_THRESH_BINARY, 5, 5);
CvSeq *pContour = NULL;
CvMemStorage *pStorage = NULL;
//IplImage *dst = cvCreateImage(cvGetSize(gray_img), 8, 3);
// 执行条件
if (pBinary)
{
// 查找所有轮廓
pStorage = cvCreateMemStorage(0);
cvFindContours(pBinary, pStorage, &pContour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE);
int cnt = 0;
CvContourScanner scanner = cvStartFindContours(pBinary, pStorage);
while (pContour = cvFindNextContour(scanner))
{
//double tmparea = fabs(cvContourArea(pContour));
CvRect rect = cvBoundingRect(pContour, 0);
double tmparea = rect.height*rect.width;   //面积筛选
if (tmparea < th_minArea || tmparea > th_maxArea)
{
cvSubstituteContour(scanner, NULL);//删除当前的轮廓
continue;
}
double tmpRatio = (rect.heightth_maxRatio)//长宽比筛选
{
cvSubstituteContour(scanner, NULL);//删除当前的轮廓
continue;
}
cnt++;
Rectbuf.push_back(rect);
//cvDrawContours(src_img, pContour, CV_RGB(0, 0, 255), CV_RGB(0, 0, 255), 0, 2, CV_FILLED, cvPoint(0, 0));
cvRectangle(src_img, cvPoint(rect.x, rect.y), cvPoint(rect.x + rect.width, rect.y + rect.height), CV_RGB(255, 0, 0), 1, 8, 0);
}
pContour = cvEndFindContours(&scanner);
cout << Rectbuf.size() << endl;
cvReleaseMemStorage(&pStorage);
pStorage = NULL;
}
cvNamedWindow("result");
cvShowImage("result", src_img); waitKey();
destroyWindow("result");
cvReleaseImage(&pBinary);
cvReleaseImage(&gray_img);
return Rectbuf;
}