OpenCV_1:Load and Display an Image

转载请说明出处：liwenjin.blog.chinaunix.net

元旦之日，无聊在宿舍参照着帮助文档和网友的资料，完成了第一个OpenCV程序，看到运行起来的效果，让我回想起来了MATLAB处理数字图像的场景，之前没在这方面认真学习，希望借助OpenCV来重新温习下。附上代码记录下。

// OpenCV_1.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include <opencv2/opencv.hpp>
#include <stdio.h>
using namespace cv;
Mat src,dst;
int morph_elem=0;
int morph_size=0;
int morph_operator=0;
int const max_operator =4;
int const max_elem =2;
int const max_kernel_size =21;
char *window_name ="Morphology Transformations Demo";//字符串变量，作为程序名称

void Morphology_Operations(int ,void *);


int _tmain(int argc, _TCHAR* argv[])
{
 src = imread(argv[1],CV_LOAD_IMAGE_COLOR/*CV_LOAD_IMAGE_UNCHANGED*/);//读取参数1，即图片资源
 if(!src.data)
 {
  return -1;
 }
 namedWindow(window_name,CV_WINDOW_AUTOSIZE);//创建窗口
//创建Trackbar来选择Morphology 操作
 createTrackbar("Opeartor:\n 0: Opening -1: Closeing \n 2: Gradient -3: Top Hat \n 4:Black Hat",window_name,&morph_operator,max_operator,Morphology_Operations);
//创建Trackbar来选择kernel类型
 createTrackbar("Element:\n 0:Rect -1:Cross -2 :Ellipse",window_name,&morph_elem,max_elem,Morphology_Operations);
//创建Trackbar来选择kernel大小
 createTrackbar("Kernel size:\n 2n +1",window_name,&morph_size,max_kernel_size,Morphology_Operations);
//默认开始
 Morphology_Operations(0,0);
 waitKey(0);


 return 0;
}

void Morphology_Operations(int ,void *)
{
 int operation =morph_operator+2;
 Mat element =getStructuringElement(morph_elem,Size(2*morph_size+1,2*morph_size+1),Point(morph_size,morph_size));
 morphologyEx(src,dst,operation,element);
 imshow(window_name,dst);
}

效果：