FilesExpand file tree

 master

/

SurfDemo.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

52 lines (43 loc) · 1.55 KB

 master

/

SurfDemo.java

Copy path

Top

File metadata and controls

• Code
• Blame

52 lines (43 loc) · 1.55 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

import org.opencv.core.Core;

import org.opencv.core.Mat;

import org.opencv.core.MatOfKeyPoint;

import org.opencv.features2d.Features2d;

import org.opencv.imgcodecs.Imgcodecs;

import org.opencv.xfeatures2d.SURF;

import org.scijava.nativelib.NativeLoader;

class SURFDetection {

public void run(String[] args) {

String filename = args.length > 0 ? args[0] : "data/box.png";

Mat src = Imgcodecs.imread(filename, Imgcodecs.IMREAD_GRAYSCALE);

if (src.empty()) {

System.err.println("Cannot read image: " + filename);

System.exit(0);

}

// -- Step 1: Detect the keypoints using SURF Detector

double hessianThreshold = 400;

int nOctaves = 4, nOctaveLayers = 3;

boolean extended = false, upright = false;

SURF detector = SURF.create(hessianThreshold, nOctaves, nOctaveLayers, extended, upright);

MatOfKeyPoint keypoints = new MatOfKeyPoint();

detector.detect(src, keypoints);

// -- Draw keypoints

Features2d.drawKeypoints(src, keypoints, src);

// -- Show detected (drawn) keypoints

Imgcodecs.imwrite("surf_result.png", src);

// HighGui.imshow("SURF Keypoints", src);

// HighGui.waitKey(0);

System.exit(0);

}

}

public class SurfDemo {

static {

try {

// Load the native OpenCV library

NativeLoader.loadLibrary(Core.NATIVE_LIBRARY_NAME);

} catch (Exception e) {

}

}

public static void main(String[] args) {

new SURFDetection().run(args);

}

}