【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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