[学习OpenCV攻略][006][平滑图片]

cvCreateImage(图片大小,像素位数,通道数)

创建图片，根据输入的图片大小，各个通道像素点的位数，和通道数。像素点宏IPL_DEPTH_8U

cvGetSize(图片)

得到图片的大小信息

cvSmooth(输入图片,输出图片,平滑方式,平滑宽,平滑高)

输出经过平滑处理后的图片，平滑方式宏CV_GAUSSIAN

#include "cv.h"
#include "highgui.h"
 
void smooth_example(IplImage *image){
    cvNamedWindow("hello-in", CV_WINDOW_AUTOSIZE);
    cvNamedWindow("hello-out", CV_WINDOW_AUTOSIZE);
     
    cvShowImage("hello-in", image);
     
    IplImage *out = cvCreateImage(cvGetSize(image), IPL_DEPTH_8U, 3);
     
    cvSmooth(image, out, CV_GAUSSIAN, 5, 5);
    cvSmooth(out, out, CV_GAUSSIAN, 5, 5);
     
    cvShowImage("hello-out", out);
     
    cvReleaseImage(&out);
     
    cvWaitKey(0);
     
    cvDestroyWindow("hello-in");
    cvDestroyWindow("hello-out");
}
 
int main(int argc, char **argv){
    IplImage *img = cvLoadImage(argv[1]);
    cvNamedWindow("hello", CV_WINDOW_AUTOSIZE);
    cvShowImage("hello", img);
     
    smooth_example(img);
     
    cvReleaseImage(&img);
    cvDestroyWindow("hello");
     
    return 0;
}