public int arwFindChessboardCorners(float[] corners, out int corner_count, byte[] imageBytes)
{
int ok;
GCHandle handle1 = GCHandle.Alloc(corners, GCHandleType.Pinned);
IntPtr address1 = handle1.AddrOfPinnedObject();
GCHandle handle2 = GCHandle.Alloc(imageBytes, GCHandleType.Pinned);
IntPtr address2 = handle2.AddrOfPinnedObject();
ok = ARNativePlugin.arwFindChessboardCorners(address1, out corner_count, address2);
handle1.Free();
handle2.Free();
return(ok);
}