[圖片] 圖像連通域的標定（OpenCv版）
[圖片] 圖像連通域的標定（OpenCv版）
[代碼] [C/C++]代碼
01 |
#include
"cv.h" |
02 |
#include
"cxcore.h" |
03 |
#include
"highgui.h" |
04 |
|
05 |
int main( int argc, char**
argv ) |
06 |
{ |
07 |
//聲明IplImage指針 |
08 |
IplImage*
pImg = cvLoadImage("e:/black.jpg",0); |
09 |
IplImage*
pContourImg = NULL; |
10 |
CvMemStorage
* storage = cvCreateMemStorage(0); |
11 |
CvSeq
* contour = 0; |
12 |
CvSeq
*contmax = 0; |
13 |
int mode
= CV_RETR_EXTERNAL; |
14 |
cvShowImage( "src",
pImg ); |
15 |
//爲輪廓顯示圖像申請空間 |
16 |
//3通道圖像，以便用彩色顯示 |
17 |
pContourImg
= cvCreateImage(cvGetSize(pImg), |
18 |
IPL_DEPTH_8U, |
19 |
3); |
20 |
//copy
source image and convert it to BGR image |
21 |
cvCvtColor(pImg,
pContourImg, CV_GRAY2BGR); |
22 |
//查找contour |
23 |
cvFindContours(
pImg, storage, &contour, sizeof(CvContour), |
24 |
mode,
CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0)); |
25 |
//將輪廓畫出 |
26 |
cvDrawContours(pContourImg,
contour, |
27 |
CV_RGB(255,0,0),
CV_RGB(255, 0, 0), |
28 |
2,
2, 8, cvPoint(0,0)); |
29 |
int area,maxArea
= 10;//設面積最大值大於10Pixel |
30 |
for(;contour;contour
= contour->h_next) |
31 |
{ |
32 |
area
= fabs(cvContourArea(
contour, CV_WHOLE_SEQ )); //獲取當前輪廓面積 |
33 |
printf("area
== %lf\n",
area); |
34 |
if(area
> maxArea) |
35 |
{ |
36 |
contmax
= contour; |
37 |
maxArea
= area; |
38 |
} |
39 |
} |
40 |
CvRect
aRect = cvBoundingRect( contmax, 0 ); |
41 |
cvSetImageROI(
pContourImg,aRect); |
42 |
//顯示圖像 |
43 |
cvShowImage( "contour",
pContourImg ); |
44 |
cvSaveImage("e:/contour.jpg",pContourImg); |
45 |
cvWaitKey(0); |
46 |
47 |
//銷燬窗口 |
48 |
cvDestroyWindow( "src" ); |
49 |
cvDestroyWindow( "contour" ); |
50 |
//釋放圖像 |
51 |
cvReleaseImage(
&pImg ); |
52 |
cvReleaseImage(
&pContourImg ); |
53 |
cvReleaseMemStorage(&storage); |
54 |
55 |
return 0; |
56 |
} |
