SURF和SIFT算法在OpenCV 3.0 Java中不起作用 [英] SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java

问题描述

我在Java中使用OpenCV 3.0（最新版本），但是当我使用SURF算法或SIFT算法时它不起作用并抛出Exception，其中说： OpenCV错误：错误的参数（指定的功能）不支持探测器类型。）在cv :: javaFeatureDetector :: create

I am using OpenCV 3.0 (the latest version) in Java, but when I use SURF algorithm or SIFT algorithm it doesn't work and throws Exception which says: OpenCV Error: Bad argument (Specified feature detector type is not supported.) in cv::javaFeatureDetector::create

我用google搜索了，但给出了这种答案问题并没有解决我的问题。如果有人知道这个问题，请告诉我。

I have googled, but the answers which was given to this kind of questions did not solve my problem. If anyone knows about this problem please let me know.

提前致谢！

更新：以下第三行代码抛出异常。

Update: The code below in third line throws exception.

        Mat img_object = Imgcodecs.imread("data/img_object.jpg");
        Mat img_scene = Imgcodecs.imread("data/img_scene.jpg");

        FeatureDetector detector = FeatureDetector.create(FeatureDetector.SURF);
        MatOfKeyPoint keypoints_object = new MatOfKeyPoint();
        MatOfKeyPoint keypoints_scene = new MatOfKeyPoint();

        detector.detect(img_object, keypoints_object);
        detector.detect(img_scene, keypoints_scene);

推荐答案

如果从源代码编译OpenCV，则可以修复通过自己编辑opencv / modules / features2d / misc / java / src / cpp / features2d_manual.hpp来删除绑定。

If you compile OpenCV from source, you can fix the missing bindings by editing opencv/modules/features2d/misc/java/src/cpp/features2d_manual.hpp yourself.

我通过进行以下更改修复了它：

I fixed it by making the following changes:

(line 6)
#ifdef HAVE_OPENCV_FEATURES2D
#include "opencv2/features2d.hpp"
#include "opencv2/xfeatures2d.hpp"
#include "features2d_converters.hpp"

...(line 121)
    case SIFT:
    fd = xfeatures2d::SIFT::create();
    break;
    case SURF:
    fd = xfeatures2d::SURF::create();
    break;

...(line 353)
    case SIFT:
        de = xfeatures2d::SIFT::create();
        break;
    case SURF:
        de = xfeatures2d::SURF::create();
        break;

唯一的要求是你和你的资源一起构建opencv_contrib可选模块（你可以下载git项目来自 https://github.com/Itseez/opencv_contrib ，并在opencv的ccmake设置上设置其本地路径。

The only requirement is that you build opencv_contrib optional module along with your sources (you can download the git project from https://github.com/Itseez/opencv_contrib and just set its local path on opencv's ccmake settings.

哦，请记住，SIFT和SURF是非自由软件^^;

Oh, and keep in mind that SIFT and SURF are non-free software ^^;

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