void Ellipse(IplImage * sabunn_img)

void Ellipse(IplImage * sabunn_img)
{
    //      ellipseの処理用
    IplImage *dst_img;
    IplImage *src_img_gray = 0;
    IplImage *tmp_img;
    CvMemStorage *storage = cvCreateMemStorage(0);
    CvSeq *contours = 0;
    CvBox2D ellipse;
    CvTreeNodeIterator it;
    CvPoint2D32f pt[4];
 
    //src_img_gray = cvCreateImage(cvGetSize(sabunn_img), IPL_DEPTH_8U, 1);
    src_img_gray = cvCloneImage(sabunn_img);
    //cvCvtColor (sabunn_img, src_img_gray, CV_BGR2GRAY);
    //printf("%d\n", __LINE__);
    tmp_img = cvCreateImage(cvGetSize(sabunn_img), IPL_DEPTH_8U, 1);
    //printf("%d\n", __LINE__);
    dst_img = cvCloneImage(sabunn_img);
 
 
    // (2)二値化と輪郭の検出
    cvThreshold(src_img_gray, tmp_img, 95, 255, CV_THRESH_BINARY);
    cvReleaseImage(&src_img_gray);
    cvFindContours(tmp_img, storage, &contours, sizeof(CvContour),
		   CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0));
 
    if (contours == NULL)
	printf("\n");
else{
 
	// (3)ツリーノードイテレータの初期化
	cvInitTreeNodeIterator(&it, contours, 3);
	while ((contours = (CvSeq *) cvNextTreeNode(&it)) != NULL) {
	    if (contours->total > 6) {
		// (4)楕円のフィッティング
		ellipse = cvFitEllipse2(contours);
		ellipse.angle = 90.0 - ellipse.angle;
		//if (ellipse.size.width * ellipse.size.height > 2350)
		//    yubi_count++;     //指の個数をカウント
		//kukei_count++;
		//printf("yubi_count:%d\n",yubi_count);
		// (5)輪郭，楕円，包含矩形の描画
		if (ellipse.size.width > ellipse.size.height
		    && ellipse.size.height * 2 <= ellipse.size.width
		    || ellipse.size.width < ellipse.size.height
		    && ellipse.size.height >= ellipse.size.width * 2) {
		    if (ellipse.size.width * ellipse.size.height > 2350) {
 
		//	printf("size:%f w:%f,h:%f,angle:%f\n",
		//	       ellipse.size.width * ellipse.size.height,
		//	       ellipse.size.width, ellipse.size.height,
		//	       ellipse.angle);
			yubi_count++;
			cvDrawContours(dst_img, contours,
				       CV_RGB(255, 0, 0), CV_RGB(255, 0,
								 0), 0, 1,
				       CV_AA, cvPoint(0, 0));
			cvEllipseBox(dst_img, ellipse, CV_RGB(0, 0, 255),
				     2);
			cvBoxPoints(ellipse, pt);
			cvLine(dst_img, cvPointFrom32f(pt[0]),
			       cvPointFrom32f(pt[1]), CV_RGB(0, 255, 0));
			cvLine(dst_img, cvPointFrom32f(pt[1]),
			       cvPointFrom32f(pt[2]), CV_RGB(0, 255, 0));
			cvLine(dst_img, cvPointFrom32f(pt[2]),
			       cvPointFrom32f(pt[3]), CV_RGB(0, 255, 0));
			cvLine(dst_img, cvPointFrom32f(pt[3]),
			       cvPointFrom32f(pt[0]), CV_RGB(0, 255, 0));
		    }
		}
	    }
	}
    }
    if (dst_img->origin == 0) {
	//　左上が原点の場合
	cvFlip(dst_img, dst_img, 0);
    }
    //      画像を表示させる
    cvShowImage(windowNameFit, dst_img);
    //      メモリを解放する
    cvReleaseImage(&dst_img);
    cvReleaseMemStorage(&storage);
    cvReleaseImage(&tmp_img);
 
    //free(storage);
    //free(contours);
}