Question

我刚刚按照this设置了版本3.4.3的openCV项目，并且我已经成功编译了项目，但是我收到了此消息

java.lang.UnsatisfiedLinkError: No implementation found for long org.opencv.video.Video.createBackgroundSubtractorMOG2_3() (tried Java_org_opencv_video_Video_createBackgroundSubtractorMOG2_13 and Java_org_opencv_video_Video_createBackgroundSubtractorMOG2_13__)
        at org.opencv.video.Video.createBackgroundSubtractorMOG2_3(Native Method)
        at org.opencv.video.Video.createBackgroundSubtractorMOG2(Video.java:145)
        at com.example.maciej.imageprocessing.MainActivity.onCreate(MainActivity.kt:80)

每当我尝试创建subtructor时都调用var backSub = Video.createBackgroundSubtractorMOG2()。

我是openCV的新手，这是我第一次在android项目中使用本机库。

Answer 1

事实证明，某些openCV库是异步加载的，backSub = Video.createBackgroundSubtractorMOG2()应该用如下的insinde onManagerConnected方法初始化：

private val mLoaderCallback = object: BaseLoaderCallback(this) {
        override fun onManagerConnected(status: Int) {
            when (status) {
                LoaderCallbackInterface.SUCCESS -> {
                    Log.i(TAG, "OpenCV loaded successfully")
                    mOpenCvCameraView?.enableView()
                    backSub = Video.createBackgroundSubtractorMOG2()
                }
                else -> {
                    super.onManagerConnected(status)
                }
            }
        }
}

如何在调用Video.createBackgroundSubtractorMOG2（）时解决UnsatisfiedLinkError？

1 个答案: