自适应阈值（有问题）

#include<cv.h>
#include<highgui.h>
#include<iostream>
#include<opencv2/opencv.hpp>


using namespace std;


int main(int argc, char* argv[])
{
  IplImage *img= cvLoadImage("D:\\123\\2\\3.jpg");         //**读取源图片**//
                 cvNamedWindow("原图",CV_WINDOW_AUTOSIZE);
                 cvShowImage("原图",img);
 
 IplImage *temp2=cvCreateImage (cvGetSize(img),IPL_DEPTH_8U,3);


 
 cvAdaptiveThreshold(img, temp2, 50, CV_ADAPTIVE_THRESH_MEAN_C, CV_THRESH_BINARY, 3, 5);    
                   cvNamedWindow("自适应阈值处理",CV_WINDOW_AUTOSIZE);
  cvShowImage("自适应阈值处理",temp2);
  cvWaitKey(0); 


  cvReleaseImage(&img);


  cvReleaseImage(&temp2);


  cvDestroyWindow("原图");


  cvDestroyWindow("自适应阈值处理");
}