我正在尝试数字识别。然而在轮廓发现之后。我在数字0,6,8的主边界框内得到了边界框,如图所示。请帮我完成图像处理的初始步骤。 我尝试过使用组矩形,但它们不起作用。请检查以下代码。谢谢。
图片:http://tinypic.com/r/1twx05/5
int main()
{
Mat inimage, gray;
inimage = imread("sample.jpg");
cvtColor(inimage, gray, COLOR_BGR2GRAY);
GaussianBlur(gray, gray, Size(5,5), 0);
adaptiveThreshold(gray, gray, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY_INV, 11, 0);
vector<vector<Point> > contours;
vector<Vec4i> hierarchy;
findContours( gray, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, Point(0, 0) );
vector<vector<Point> > contours_poly( contours.size() );
vector<Rect> boundRect( contours.size() );
for( int i = 0; i < contours.size(); i++ )
{
approxPolyDP( Mat(contours[i]), contours_poly[i], 3, true );
boundRect[i] = boundingRect( Mat(contours_poly[i]) );
}
//groupRectangles(boundRect, 1, 0.2);
Scalar color = Scalar(0,0,255);
for( int i = 0; i< contours.size(); i++ )
{
//drawContours( inimage, contours_poly, i, color, 1, 8, vector<Vec4i>(), 0, Point() );
rectangle( inimage, boundRect[i].tl(), boundRect[i].br(), color, 1, 8, 0 );
}
namedWindow( "Contours", CV_WINDOW_AUTOSIZE );
imshow( "Contours", inimage );
waitKey(0);
return 0;
}
答案 0 :(得分:0)