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我是 Java 开发人员。我的目标是使用 javaCV 检测图像关键点

这是我的代码：

      final CvMat image1 = cvLoadImageM("im1.png" , 0);

      final CvMat image2 = cvLoadImageM("im2.png", 0);

      SIFT  sift = new SIFT();

  FeatureDetector featureDetector =sift.getFeatureDetector();


      KeyPoint keypoint1 = new KeyPoint();

  KeyPoint keypoint2 = new KeyPoint() ;

  featureDetector.detect(image1, keypoint1 , null);


      featureDetector.detect(image2,keypoint2, null);

但是当我运行这段代码时，我遇到了访问冲突异常

     A fatal error has been detected by the Java Runtime Environment:

     EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7795e3be, pid=128, tid=2348


     JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)

     Java VM: Java HotSpot(TM) Client VM (24.45-b08 mixed mode, sharing windows-x86 )

     Problematic frame:

     C  [ntdll.dll+0x2e3be]

我看不出问题出在哪里？

4

2 回答 2

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你的代码对我有用；我唯一改变的是：

final CvMat image1 = cvLoadImageM("C:/temp/316.jpg" , 0);
final CvMat image2 = cvLoadImageM("C:/temp/330.jpg", 0);

检查您的图像路径：

import com.googlecode.javacv.cpp.opencv_core.CvMat;
import com.googlecode.javacv.cpp.opencv_features2d.FeatureDetector;
import com.googlecode.javacv.cpp.opencv_features2d.KeyPoint;
import com.googlecode.javacv.cpp.opencv_nonfree.SIFT;

import static com.googlecode.javacv.cpp.opencv_highgui.cvLoadImageM;
public class any {
public static void main(String args[])
{
final CvMat image1 = cvLoadImageM("C:/temp/316.jpg" , 0);

    final CvMat image2 = cvLoadImageM("C:/temp/330.jpg", 0);
    if(image1==null)
    System.out.println("image is null");
if(image2==null)
    System.out.println("image is null");

SIFT  sift = new SIFT();
FeatureDetector featureDetector =sift.getFeatureDetector();
KeyPoint keypoint1 = new KeyPoint();
KeyPoint keypoint2 = new KeyPoint() ;
featureDetector.detect(image1, keypoint1 , null);
featureDetector.detect(image2,keypoint2, null);
System.out.println(keypoint1);
}
}
于 2014-06-22T02:07:45.363 回答
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我没有使用 Java CV，但在 C++ OpenCV 中，关键点是一个关键点的结构，而检测器需要获取关键点的向量。您必须在 Java 中使用 std::vector（在 C++ 中使用）的类似物，例如 Array 或类似的东西。

于 2013-11-06T14:48:21.900 回答