android - 使用 FeatureDetector OpenCv Android 时出错

Question

我想使用 opencV android 来处理图像；我需要使用 sift，所以我写了这段代码：

FeatureDetector featureDetector = FeatureDetector.create(FeatureDetector.FAST);

但是我有这个错误：

java.lang.UnsatisfiedLinkError: Native method not found: org.opencv.features2d.FeatureDetector.create_0:(I)J

我该如何解决？

Answer 1

如果您在 opencv 库完成加载之前调用特征检测器，则会触发此错误。

推杆

FeatureDetector featureDetector = FeatureDetector.create(FeatureDetector.FAST);

加载器回调内部将确保仅在加载 opencv 后才调用它。例如：

private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
            case LoaderCallbackInterface.SUCCESS: //opencv is loaded!
            {
                Log.i(TAG, "OpenCV loaded successfully"); 
                mOpenCvCameraView.enableView();
                FeatureDetector featureDetector = FeatureDetector.create(FeatureDetector.FAST); //feature detector goes here!
            } break;
            default:
            {
                super.onManagerConnected(status);
            } break;
        }
    }
};