To fix it do the following in eclipse
- Right Click your eclipse project > Build Path > Configure Build Path
- Select openCV library and click Edit
- Click User libraries
- Expand openCV and select Native Libraries
- Click Edit and browse to the path where you copied build/java folder
- Select x64 in case of AMD else x86 folder.
- Remember the dll file name and use the same under System.LoadLibrary()
Hope that helps