2013-03-19 121 views
1

大家好,请帮助我。我有个问题。 我从图像中检测凸面船体。在ConvexHull OpenCV上填充颜色

然后,我有一个问题来填充ConvexHull边界内的区域的颜色。

有没有人可以帮助我在ConvexHull的边界内填充颜色?

请帮我实施源代码。

我使用OpenCV 2.3。

这是一个源代码:

#include "stdafx.h" 
#include "opencv2/highgui/highgui.hpp" 
#include "opencv2/imgproc/imgproc.hpp" 
#include <iostream> 
#include <stdio.h> 
#include <stdlib.h> 

using namespace cv; 
using namespace std; 

Mat src; Mat src_gray; 
int thresh = 240; 
int max_thresh = 255; 
RNG rng(12345); 

/// Function header 
void thresh_callback(int, void*); 

/** @function main */ 
int main(int argc, char** argv) 
{ 
    /// Load source image and convert it to gray 
    src = imread("kubis1.jpg", 1); 

    /// Convert image to gray and blur it 
    cvtColor(src, src_gray, CV_BGR2GRAY); 
    blur(src_gray, src_gray, Size(3,3)); 

    /// Create Window 
    char* source_window = "Source"; 
    namedWindow(source_window, CV_WINDOW_AUTOSIZE); 
    imshow(source_window, src); 

    createTrackbar(" Threshold:", "Source", &thresh, max_thresh, thresh_callback); 
    thresh_callback(0, 0); 

    waitKey(0); 
    return(0); 
} 

/** @function thresh_callback */ 
void thresh_callback(int, void*) 
{ 
    Mat src_copy = src.clone(); 
    Mat threshold_output; 
    vector<vector<Point> > contours; 
    vector<Vec4i> hierarchy; 

    /// Detect edges using Threshold 
    threshold(src_gray, threshold_output, thresh, 255, THRESH_BINARY); 

    /// Find contours 
    findContours(threshold_output, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, Point(0, 0)); 

    /// Find the convex hull object for each contour 
    vector<vector<Point> >hull(contours.size()); 
    for(int i = 0; i < contours.size(); i++) 
     { convexHull(Mat(contours[i]), hull[i], false); 
    } 

    /// Draw contours + hull results 
    Mat drawing = Mat::zeros(threshold_output.size(), CV_8UC3); 
    for(int i = 0; i< contours.size(); i++) 
     { 
     Scalar color = Scalar(rng.uniform(0, 255), rng.uniform(0,255), rng.uniform(0,255)); 
     drawContours(drawing, contours, i, color, 1, 8, vector<Vec4i>(), 0, Point()); 
     drawContours(drawing, hull, i, color, 1, 8, vector<Vec4i>(), 0, Point()); 
     } 

    /// Show in a window 
    namedWindow("Hull demo", CV_WINDOW_AUTOSIZE); 
    imshow("Hull demo", drawing); 
} 
+0

任何人都可以帮助我吗? – Jenang 2013-03-19 10:16:22

+0

你的问题是什么? – ArtemStorozhuk 2013-03-19 10:33:18

+0

我的问题:帮助我填充ConvexHull边界内的区域的颜色。 – Jenang 2013-03-20 03:57:58

回答

3

应使用drawContours函数具有负“厚度”参数:

的函数绘制轮廓图像中的轮廓,如果厚度> = 0或 如果厚度为< = 0

+2

请将此答案标为正确。 – Sohaib 2013-10-05 18:47:50