（19）边界变幻

 1 #include <opencv2\core\core.hpp>  
 2 #include <opencv2\highgui\highgui.hpp>  
 3 #include <opencv2\imgproc\imgproc.hpp>  
 4 #include <opencv2\objdetect\objdetect.hpp>  
 5 #include <opencv2\imgproc\types_c.h>  
 6 #include <opencv2\objdetect\objdetect_c.h>
 7 #include<opencv2/opencv.hpp>
 8 #include<iostream>
 9 #include<cmath>
10 #include<cstdio>
11 
12 using namespace std;
13 using namespace cv;
14 
15 int main()
16 {
17     Mat src, dst;
18     src = imread("C:\\Users\\32829\\Desktop\\aa.jpg");
19     if (src.empty())
20     {
21         cout << "!!???" << endl;
22         return -1;
23     }
24     namedWindow("cat!", 1);
25     imshow("cat!", src);
26     namedWindow("out", 1);
27 
28     int top = (int)(0.05*src.rows);
29     int bottom = (int)(0.05*src.rows);
30     int left = (int)(0.05*src.cols);
31     int right = (int)(0.05*src.cols);
32     RNG rng(12345);
33     int bordertype = BORDER_DEFAULT;
34 
35     int c = 0;
36     while (true)
37     {
38         c = waitKey(500);
39         if ((char)c == 27)
40             break;
41         if ((char)c == 'r')
42         {
43             bordertype = BORDER_REPLICATE;
44         }
45         else if ((char)c == 'w')
46         {
47             bordertype = BORDER_WRAP;
48         }
49         else if ((char)c == 'c')
50         {
51             bordertype = BORDER_CONSTANT;
52         }
53         57         Scalar color = Scalar(rng.uniform(0, 255), rng.uniform(0, 255), rng.uniform(0, 255));
58         copyMakeBorder(src, dst, top, bottom, left, right, bordertype, color);
59         imshow("out", dst);
60     }
61 
62 
63     waitKey(0);
64     return 0;
65 }