Question

嗨，我正在使用quickbirdstudios opencv-android 4_1_0_contrib库，因为我的应用程序的部分功能是能够检测/读取aruco标记。我的android应用是用Kotlin编写的。当我在我的app / build.gradle中将该库用作外部依赖项时，该应用程序运行正常，没有错误：

implementation 'com.quickbirdstudios:opencv:4.1.0-contrib'

但是，当我改为将库添加为项目的一部分，并将其添加为模块，以便将app / build.gradle中的实现替换为：

implementation project(path: ':opencv4_1_0_contrib')

在运行应用程序时会引发此错误：

java.lang.UnsatisfiedLinkError: No implementation found for long org.opencv.aruco.Dictionary.get_0(int) (tried Java_org_opencv_aruco_Dictionary_get_10 and Java_org_opencv_aruco_Dictionary_get_10__I) at org.opencv.aruco.Dictionary.get_0(Native Method)
    at org.opencv.aruco.Dictionary.get(Dictionary.java:104)
    at com.walmart.svi.opencv.FrameKt.arucoTags(Frame.kt:43)
    at com.walmart.svi.dto.FrameBufferKt.pushFrame(FrameBuffer.kt:48)
    at com.walmart.svi.opencv.OpenCVActivity.onCameraFrame(OpenCVActivity.kt:103)
    at org.opencv.android.CameraBridgeViewBase.deliverAndDrawFrame(CameraBridgeViewBase.java:392)
    at org.opencv.android.JavaCameraView$CameraWorker.run(JavaCameraView.java:373)
    at java.lang.Thread.run(Thread.java:764)

Dictionary.java

public static Dictionary get(int dict)
    {

        Dictionary retVal = Dictionary.__fromPtr__(get_0(dict)); //***line 104

        return retVal;
    }

Frame.kt

fun Frame.arucoTags(): List<Marker> {
    val ids = Mat()
    val corners = ArrayList<ArucoCorners>()
    val placeholder = value.clone()
    Imgproc.cvtColor(placeholder, placeholder, Imgproc.COLOR_RGBA2GRAY)
    Aruco.detectMarkers(placeholder, Dictionary.get(Aruco.DICT_5X5_1000), corners, ids) //***line 43
    val markers = parseMarkers(ids, corners)
    for (corner in corners) {
        corner.release()
    }
    ids.release()
    return markers
}

FrameBuffer.kt

fun FrameBuffer.pushFrame(frame: Frame) = with(seenMarkers()) {
    FrameBuffer(frame = frame,
            frameHistory = frameHistory.plusElement(frame.arucoTags()).takeLast(buffer), //***line 48
            buffer = buffer,
            currentMarkers = this,
            currentFocus = frame.centerMarker(this))
}

OpenCVActivity.kt

override fun onCameraFrame(inputFrame: CameraBridgeViewBase.CvCameraViewFrame): Mat {

        currentFrame = Frame(inputFrame.rgba())
        frameData = frameData?.let {
            onNextFrame(it.pushFrame(currentFrame)) //*** line 103
        } ?: FrameBuffer.new(currentFrame, frameBuffer)

        return frameData!!.frame.value
    }

CameraBridgeViewBase.java

protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
        Mat modified;

        if (mListener != null) {
            modified = mListener.onCameraFrame(frame); //***line 392
        } else {
            modified = frame.rgba();
        }
        ...
}

任何帮助将不胜感激。谢谢。

android opencv错误：未找到长org.opencv.aruco.Dictionary.get_0（int）的实现

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