Dll not found exception in Editor only

I want to use openCV in Unity (on Windows) and I have followed t$$anonymous$$s tutorial

When I do a build everyt$$anonymous$$ng going fine and the application work on my android (every libs are in good place).

When I want to play it in unity, I have the error "DllNotFoundException: SharedObject1".

My dlls ( libSharedObject1.so & libopencv_java3.so ) are in "Assets\Plugins\Android\libs\armeabi-v7a". I have tried other path for my dlls without any improvement.

My cs file

 using UnityEngine;
 using System.Collections;
 using System.Runtime.InteropServices;
 
 public class CallNativeCode : MonoBehaviour
 {
     [DllImport ("SharedObject1") ]
     private static extern float Foopluginmethod();
 
     void OnGUI()
     {
         GUI.Label(new Rect(15, 125, 450, 100), "Foopluginmethod: " + Foopluginmethod());
     }
 }