OpenCV学习笔记-平滑处理

平滑处理使用的函数为cvSmooth,例题如下:

#include "StdAfx.h" #include<cv.h> #include<highgui.h> #include<stdio.h> void main() { IplImage* img_src=0; IplImage* img_dst=0; char* pictureImage=(char*)("guagua.bmp"); img_src=cvLoadImage(pictureImage,1); if(!img_src) { printf("Could not load image file:%s",pictureImage); exit(0); } img_dst=cvCreateImage(cvGetSize(img_src),IPL_DEPTH_8U,3); cvNamedWindow("Original Picture:",CV_WINDOW_AUTOSIZE); cvMoveWindow("Original Picture:",100,100); cvShowImage("Original Picture:",img_src); cvNamedWindow("CV_BLUR:",CV_WINDOW_AUTOSIZE); cvMoveWindow("CV_BLUR:",200,100); cvSmooth(img_src,img_dst,CV_BLUR,3,3,0,0); cvShowImage("CV_BLUR:",img_dst); //注意使用CV_BLUR_NO_SCALE时，原始图像和目标图像， //他们的类型不能是一致的。 IplImage* img_dst2=0; img_dst2=cvCreateImage(cvGetSize(img_src),IPL_DEPTH_16S,3); cvNamedWindow("CV_BLUR_NO_SCALE:",CV_WINDOW_AUTOSIZE); cvMoveWindow("CV_BLUR_NO_SCALE:",300,100); cvSmooth(img_src,img_dst2,CV_BLUR_NO_SCALE,3,3,0,0); cvShowImage("CV_BLUR_NO_SCALE:",img_dst2); cvNamedWindow("CV_GAUSSIAN:",CV_WINDOW_AUTOSIZE); cvMoveWindow("CV_GAUSSIAN:",400,100); cvSmooth(img_src,img_dst,CV_GAUSSIAN,3,3,0,0); cvShowImage("CV_GAUSSIAN:",img_dst); cvNamedWindow("CV_MEDIAN:",CV_WINDOW_AUTOSIZE); cvMoveWindow("CV_MEDIAN:",500,100); cvSmooth(img_src,img_dst,CV_MEDIAN,3,3,0,0); cvShowImage("CV_MEDIAN:",img_dst); // cvSmooth(pFrameMat,pFrameMat,CV_BILATERAL,3,0,0);//双向滤波 //参数不对，改成 //cvSmooth(pFrameMat,pFrameMat,CV_BILATERAL,3,3,11,11); //试试，后面两个参数分别代表了位置上和颜色上的sigma值，不能设为0的 cvNamedWindow("CV_BILATERAL:",CV_WINDOW_AUTOSIZE); cvMoveWindow("CV_BILATERAL:",600,100); cvSmooth(img_src,img_dst,CV_BILATERAL,3,3,11,11); cvShowImage("CV_BILATERAL:",img_dst); cvWaitKey(0); cvReleaseImage(&img_src); cvReleaseImage(&img_dst); cvDestroyWindow("Original Picture:"); cvDestroyWindow("CV_BLUR:"); cvDestroyWindow("CV_GAUSSIAN:"); cvDestroyWindow("CV_MEDIAN:"); cvDestroyWindow("CV_BILATERAL:"); }

运行结果测试图:

注意的问题:
1.在使用CV_BLUR_NO_SCALE时,目标图像和原始图像的类型不能一致.

2.在使用CV_BILATERAL时,后两个参数分别代表位置上和颜色上的信息,不能为零.\

仍旧存在问题:

存在溢出,不知原因.

参考文献:

1.学习OpenCV ,于仕祺,刘瑞祯,清华大学出版社.pp.128-134

2.http://www.opencv.org.cn/forum/viewtopic.php?f=1&t=4521&p=50770#p50770

3.http://www.opencv.org.cn/forum/viewtopic.php?p=33338