如何计算一幅图像的处理时间

[shn521]

例如我对一幅图像进行均值滤波，那么如何计算出处理这幅图像所要用的时间，感谢。

[zgl7903]

LARGE_INTEGER tBefore, tAfter, i64PerfFrequency;
// Figure out how often the performance counter increments
QueryPerformanceFrequency( &i64PerfFrequency );

// Get performance counter before the ANSI API loop
QueryPerformanceCounter( &tBefore );

//run your code here
……

// Get performance counter after the ANSI API loop
QueryPerformanceCounter( &tAfter );

double tSecond = (double)(tAfter.QuadPart - tBefore.QuadPart)/(double)i64PerfFrequency.QuadPart;

[zhao1zhong6]

DWORD t = timeGetTime();
处理图像
DWORD tt= timeGetTime() - t;
cout<<tt;

[libing64]

C++有个类clock_t 获取当前时间，（ms级），你在图像处理的开始和末尾分别获取时间，他们的差就是经过的时间（ms）

[fengbingchun]

#include <ctime>
using namespace std;

time_t tBegin, tEnd;

tBegin = clock();
........
tEnd = clock();

double(tEnd-tBegin)/CLOCKS_PER_SEC

[HarriLiu]

GetTickCount