Question

我使用功能检测实现对象跟踪，我收到以下错误：

12-19 20：59：16.943：E / cv :: error（）（31858）：OpenCV错误：断言失败（src.dims == 2＆amp;＆amp; info.height ==（uint32_t）src。 rows＆amp;＆amp; info.width ==（uint32_t）src.cols）in void Java_org_opencv_android_Utils_nMatToBitmap2（JNIEnv *，jclass，jlong，jobject，jboolean），file / home / reports / ci / slave_desktop / 50-SDK / opencv / modules /java/generator/src/cpp/utils.cpp，第97行 12-19 20：59：16.943：E / org.opencv.android.Utils（31858）：nMatToBitmap catched cv :: Exception：/ home / reports / ci / slave_desktop / 50-SDK / opencv / modules / java / generator / src / cpp / utils.cpp：97：错误：（-215）src.dims == 2＆amp;＆amp; info.height ==（uint32_t）src.rows＆amp;＆amp; info.width ==（uint32_t）函数中的src.cols void Java_org_opencv_android_Utils_nMatToBitmap2（JNIEnv *，jclass，jlong，jobject，jboolean） 12-19 20：59：16.943：E / CameraBridge（31858）：Mat类型：Mat [820 * 2672 * CV_8UC3，isCont = true，isSubmat = false，nativeObj = 0x55650380，dataAddr = 0x5ec20010] 12-19 20：59：16.943：E / CameraBridge（31858）：位图类型：960 * 720 12-19 20：59：16.943：E / CameraBridge（31858）：Utils.matToBitmap（）抛出异常：/ home / reports / ci / slave_desktop / 50-SDK / opencv / modules / java / generator / src / cpp / utils.cpp：97：错误：（-215）src.dims == 2＆amp;＆amp; info.height ==（uint32_t）src.rows＆amp;＆amp; info.width ==（uint32_t）src.cols in function void Java_org_opencv_android_Utils_nMatToBitmap2（JNIEnv *，jclass，jlong，jobject，jboolean）

这是代码：

    public void onCameraViewStarted(int width, int height) {
    mRgba = new Mat();
    mGray = new Mat();
    mView = new Mat();
    mObject = new Mat();
}

public Mat onCameraFrame(CvCameraViewFrame inputFrame) {    
    mRgba = inputFrame.rgba();

    switch (viewMode) {
    case VIEW_MODE_RGBA:

        return mRgba;

    case VIEW_MODE_FeatureDetect:
        try {
        mGray = inputFrame.gray();
        mObject = new Mat();
        mObject = Highgui.imread(Environment.getExternalStorageDirectory()+ "/Android/data/" + getApplicationContext().getPackageName() + "/Files/Object.jpg", Highgui.CV_LOAD_IMAGE_GRAYSCALE);
        mView = mGray.clone();          

        FeatureDetector myFeatureDetector = FeatureDetector.create(FeatureDetector.ORB);

        MatOfKeyPoint keypoints = new MatOfKeyPoint();
        myFeatureDetector.detect(mGray, keypoints);

        MatOfKeyPoint objectkeypoints = new MatOfKeyPoint();
        myFeatureDetector.detect(mObject, objectkeypoints);

        DescriptorExtractor Extractor = DescriptorExtractor.create(DescriptorExtractor.ORB);
        Mat sourceDescriptors = new Mat();
        Mat objectDescriptors = new Mat();
        Extractor.compute(mGray, keypoints, sourceDescriptors);
        Extractor.compute(mGray, objectkeypoints, objectDescriptors);
        DescriptorMatcher matcher = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE);

        MatOfDMatch matches = new MatOfDMatch();
        matcher.match(sourceDescriptors, objectDescriptors, matches);

        Features2d.drawMatches(mGray, keypoints, mObject, objectkeypoints, matches, mView);

        return mView;
        } catch (Exception e) {
            Log.d("Exception",e.getMessage());
        }

    }

    return mRgba;
}

它无法在屏幕上显示对象，但我需要一些信息，我可以放置矩形或者我可以将对象标记为我想要跟踪的内容。抱歉我的英语，我希望你明白我在问什么，谢谢你的任何建议。

Answer 1

感谢Darshan的建议，我解决了问题，需要调整图片大小，像Features2d.drawMatches(mGray, keypoints, mObject, objectkeypoints, matches, mView);一样在Imgproc.resize(mView, mView, mGray.size());下方添加此代码，然后它就可以正常运行。

Android OpenCV - 对象跟踪

1 个答案: