求算法执行时间的方法

double t = (double)cvGetTickCount();


ProcessOneSample(); // 算法函数


t = (double)cvGetTickCount() - t;//相减为算法执行的时间

printf( "detection time = %g ms\n", t/((double)cvGetTickFrequency()*1000.) );

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clock_t t = clock();  // #include<time.h>


ROILocation( load_path, save_path );


t = clock() - t;
printf( "Loation time is %ld ms.\n", (long)t );