opencv图像的读入、灰度化、二值化、反色

平台 wen7+vs2010+opencv2.4.4

#include <opencv2\opencv.hpp>

#include<iostream>

using namespace std;

using namespace cv;

void main(int argc, char* argv[])

{

printf("hello word!\n");

IplImage *src;

src = cvLoadImage("D:\\文件夹\\image.jpg"); //这里将lena.jpg和lena.cpp文件放在同一个文件夹下

cvNamedWindow("src",CV_WINDOW_AUTOSIZE);

cvMoveWindow("src",0,50);

cvShowImage("src",src);

//图像灰度化

IplImage* gray_image = cvCreateImage(cvGetSize(src),8,1);

cvCvtColor(src,gray_image,CV_BGR2GRAY);

cvNamedWindow("gray",CV_WINDOW_AUTOSIZE);

cvMoveWindow("gray",100,100);

cvShowImage("gray",gray_image);

//-----------------------------------------二值图像-----------------------------------------//

//图像二值化

IplImage*bw_image = cvCreateImage(cvGetSize(gray_image),IPL_DEPTH_8U, 1);

double max_val = 255; //阈值化后的最大值

cvThreshold(gray_image, bw_image, 0, max_val , CV_THRESH_OTSU); //调用OTSU算法的参数设置

cvNamedWindow("bw",CV_WINDOW_AUTOSIZE);

cvMoveWindow("bw",200,150);

cvShowImage("bw",bw_image);

//-----------------------------------------反色图像-----------------------------------------//

//二值图像反色

int ivs_height ,ivs_width ,ivs_step ,ivs_channel ;

int ivs_i,ivs_j,ivs_k;

uchar*data ;

uchar*ivs_data ;

IplImage*ivs_image = cvCreateImage(cvGetSize(gray_image),IPL_DEPTH_8U, 1);

ivs_height = bw_image->height;

ivs_width = bw_image->width;

ivs_step = bw_image->widthStep/sizeof(uchar);

ivs_channel = bw_image->nChannels;

data = (uchar*)bw_image->imageData;

printf("Processing a %d X %d image with %d channel!\n",ivs_height,ivs_width,ivs_channel);

ivs_data = (uchar*)ivs_image->imageData;

// 反色图像

for(ivs_i=0;ivs_i<ivs_height;ivs_i++)

{

for(ivs_j=0;ivs_j<ivs_width;ivs_j++)

{

for(ivs_k=0;ivs_k<ivs_channel;ivs_k++)

{

ivs_data[ivs_i*ivs_step+ivs_j*ivs_channel+ivs_k]=255-data[ivs_i*ivs_step+ivs_j*ivs_channel+ivs_k];

}//k

}//j

}//i

//显示图像

cvNamedWindow("ivs", CV_WINDOW_AUTOSIZE);//创建窗口

cvMoveWindow("ivs",300,200);//窗口位置

cvShowImage( "ivs",ivs_image);//显示图像

cvWaitKey(0);

cvDestroyAllWindows();

// cvReleaseImage(&src);

// cvReleaseImage(&gray_image);

// cvReleaseImage(&bw_image);

// cvReleaseImage(&ivs_image);

}

注意：若是vc6.0+opencv1.0的平台，只需修改头文件，以上代码是本人，从vc6.0+opencv1.0平台，转移到vs2010+opencv2.4.4平台的，都已运行成功