Android : How to use DroidAR library in android by using eclipse Juno

I am trying to use the driodar library in android. I wanted to show the geobased marker by using droidar . For this I imported the ARMarker which contain jni code,DroidAR and MarkerDemos projects in eclipse. Here ARMarker and DroidAR works as library and MarkerDemos is using these library.I add these library to the MarkerDemos example. But I got the follwing error in ARMarker code as given below. I tried to include the opencv but still getting this error. I have spent one week in this problem. please help me. I am very thankful to all.

"Compile thumb : opencv <= myOpenCVDetection.c D:/AR/droidar-master/ARMarker//jni/myOpenCVDetection.c:3:16: fatal error: cv.h: No such file or directory