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【OpenCV应用笔记】(彩色/灰度)图像像素值读取并保存到txt文件

【OpenCV应用笔记】(彩色/灰度)图像像素值读取并保存到txt文件

   SkySeraph Feb 23rd 2012  SZTCL

Email：zgzhaobo@gmail.com    QQ：452728574

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一、啰嗦：

　　一个搞硬件的朋友要测试FPGA和PC机的CCD通讯，需用到图像数据，找到我这个曾经"笑傲"实验室的“图像处理高手”，委托我写一个小测试程序，将一副指定的图像(彩色/灰度)转换程txt文件保存到PC机上，Ta只要exe文件，代码这玩意不需要...，情何以堪...还是动手写了一个，测试通过，ok，见下....o(∩_∩)o 

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二、源码

1 彩色图像

①输入：一副彩色图像rgb.bmp

②输出：D盘下的三个txt文件，分别为r.txt、g.txt、b.txt

③源码：

View Code 
 1 /*===============================================//
 2 功能：RGB读取并保存
 3 时间：02/23/2012 SkySeraph
 4 //===============================================*/
 5 #include "iostream"
 6 #include <fstream>
 7 using namespace std;
 8 
 9 #include "cv.h"
10 #include "highgui.h"
11 
12 #pragma comment(lib,"highgui.lib")
13 #pragma comment(lib,"cv.lib")
14 #pragma comment(lib,"cvaux.lib")
15 #pragma comment(lib,"cxcore.lib")
16 
17 int main(int argc, char* argv[])
18 {
19     /* ①
20     IplImage*img =  cvLoadImage("rgb.bmp",-1);
21     if(img==NULL)
22         return 0;
23     CvScalar p;
24     ofstream outfile("d:\\rgb.txt");
25     outfile<<"图像宽和高:"<<img->width<<"*"<<img->height<<endl;
26     for(int i=0;i<img->height;i++)
27     {
28         for(int j=0;j<img->width;j++)
29         {
30             p = cvGet2D(img,i,j);
31             outfile<<p.val[0] <<" "<<p.val[1]<<" "<<p.val[2] <<" "<<endl;
32         }    
33     }    
34 */
35 ///*  ②
36     IplImage* img =  cvLoadImage("rgb.bmp",-1);
37     CvScalar p;
38     ofstream outfile1("d:\\b.txt");
39     ofstream outfile2("d:\\g.txt");
40     ofstream outfile3("d:\\r.txt");
41     outfile1<<"图像宽和高:"<<img->width<<"*"<<img->height<<endl;
42     outfile1<<"图像B值"<<endl;
43     outfile2<<"图像宽和高:"<<img->width<<"*"<<img->height<<endl;
44     outfile2<<"图像G值"<<endl;
45     outfile3<<"图像宽和高:"<<img->width<<"*"<<img->height<<endl;
46     outfile3<<"图像R值"<<endl;
47     //cvFlip(img);
48     for(int i=0;i<img->width;i++)
49     {
50         for(int j=0;j<img->height;j++)
51         {
52             p = cvGet2D(img,i,j);//(j,i)
53             outfile1<<p.val[0]<<" ";
54             outfile2<<p.val[1]<<" ";
55             outfile3<<p.val[2]<<" ";
56         }
57         outfile1<<endl;
58         outfile2<<endl;
59         outfile3<<endl;
60     }    //*/
61 
62     return 0;
63 }

④exe文件：rgb.zip

2 灰度图像

①输入：一副灰度图像gray.jpg

②输出：gray.txt

③源码：

View Code 
 1 /*===============================================//
 2 功能：Gray读取并保存
 3 时间：02/23/2012 SkySeraph
 4 //===============================================*/
 5 #include "iostream"
 6 #include <fstream>
 7 using namespace std;
 8 
 9 #include "cv.h"
10 #include "highgui.h"
11 
12 #pragma comment(lib,"highgui.lib")
13 #pragma comment(lib,"cv.lib")
14 #pragma comment(lib,"cvaux.lib")
15 #pragma comment(lib,"cxcore.lib")
16 
17 
18 int main(int argc, char* argv[])
19 {
20     IplImage* img =  cvLoadImage("gray.jpg",0);
21     CvScalar p;
22     ofstream outfile1("d:\\gray.txt");
23     outfile1<<"图像宽和高:"<<img->width<<"*"<<img->height<<endl;
24     outfile1<<"图像像素值"<<endl;
25     //cvFlip(img);
26     for(int i=0;i<img->width;i++)
27     {
28         for(int j=0;j<img->height;j++)
29         {
30             p = cvGet2D(img,i,j);//(j,i)
31             outfile1<<p.val[0]<<" ";
32         }
33         outfile1<<endl;
34     }    //*/
35 
36     return 0;
37 }

④exe文件：gray.zip

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三、效果

彩色为例，源图像

r.txt(部分)：gray.zip



其它类似，不再啰嗦...

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posted @ 2012-02-23 21:59  SkySeraph  阅读(11898)  评论(5)  编辑  收藏  举报