答案 0 :(得分:2)
首先找到它的凸包,然后填充它的内部区域:
cv::Mat inputImage = cv::imread("input.jpg", CV_LOAD_IMAGE_GRAYSCALE);
cv::threshold(inputImage, inputImage, 10, 255, 0);
// find non-zero elements
cv::Mat nonZeroCoordinates;
cv::findNonZero(inputImage, nonZeroCoordinates);
cv::vector<cv::Point> points;
for (int i = 0; i < nonZeroCoordinates.total(); i++)
{
points.push_back(nonZeroCoordinates.at<cv::Point>(i));
}
// Find convex hull
std::vector<int> hull;
cv::convexHull(cv::Mat(points), hull, false);
cv::vector<cv::Point> hullpoints;
int hullcount = (int)hull.size();
for (int i = 0; i < hullcount; i++)
{
cv::Point pt = points[hull[i]];
hullpoints.push_back(pt);
}
std::vector<std::vector<cv::Point> > fillContAll;
fillContAll.push_back(hullpoints);
cv::Mat result = cv::Mat::zeros(inputImage.size(), CV_8UC1);
cv::fillPoly(result, fillContAll, cv::Scalar(255));
鉴于您的原始图片:
这是你的最终结果: