I ran the FaceDetect sample using IPP6.1 successfully and substituted a BMP file including 50 faces for the original test.bmp. The run time printed on the console was - "IPP time: 1908ms". Meanwhile, I ran a serial sample code using OpenCV to detect faces, of course, same algorithm (Boosted Haar Classifier) and same BMP file for test. The detecting time of this serial application is only 969ms. I wonder how I can improve the face-detection performance using IPP. Can you give me some advices?