1 package org.opencv.test.features2d; 2 3 import org.opencv.core.Core; 4 import org.opencv.core.CvType; 5 import org.opencv.core.Mat; 6 import org.opencv.core.MatOfKeyPoint; 7 import org.opencv.core.Point; 8 import org.opencv.core.Scalar; 9 import org.opencv.features2d.DescriptorExtractor; 10 import org.opencv.core.KeyPoint; 11 import org.opencv.test.OpenCVTestCase; 12 import org.opencv.test.OpenCVTestRunner; 13 import org.opencv.imgproc.Imgproc; 14 15 public class BRIEFDescriptorExtractorTest extends OpenCVTestCase { 16 17 DescriptorExtractor extractor; 18 int matSize; 19 getTestImg()20 private Mat getTestImg() { 21 Mat cross = new Mat(matSize, matSize, CvType.CV_8U, new Scalar(255)); 22 Imgproc.line(cross, new Point(20, matSize / 2), new Point(matSize - 21, matSize / 2), new Scalar(100), 2); 23 Imgproc.line(cross, new Point(matSize / 2, 20), new Point(matSize / 2, matSize - 21), new Scalar(100), 2); 24 25 return cross; 26 } 27 28 @Override setUp()29 protected void setUp() throws Exception { 30 super.setUp(); 31 extractor = DescriptorExtractor.create(DescriptorExtractor.BRIEF); 32 matSize = 100; 33 } 34 testComputeListOfMatListOfListOfKeyPointListOfMat()35 public void testComputeListOfMatListOfListOfKeyPointListOfMat() { 36 fail("Not yet implemented"); 37 } 38 testComputeMatListOfKeyPointMat()39 public void testComputeMatListOfKeyPointMat() { 40 KeyPoint point = new KeyPoint(55.775577545166016f, 44.224422454833984f, 16, 9.754629f, 8617.863f, 1, -1); 41 MatOfKeyPoint keypoints = new MatOfKeyPoint(point); 42 Mat img = getTestImg(); 43 Mat descriptors = new Mat(); 44 45 extractor.compute(img, keypoints, descriptors); 46 47 Mat truth = new Mat(1, 32, CvType.CV_8UC1) { 48 { 49 put(0, 0, 96, 0, 76, 24, 47, 182, 68, 137, 50 149, 195, 67, 16, 187, 224, 74, 8, 51 82, 169, 87, 70, 44, 4, 192, 56, 52 13, 128, 44, 106, 146, 72, 194, 245); 53 } 54 }; 55 56 assertMatEqual(truth, descriptors); 57 } 58 testCreate()59 public void testCreate() { 60 assertNotNull(extractor); 61 } 62 testDescriptorSize()63 public void testDescriptorSize() { 64 assertEquals(32, extractor.descriptorSize()); 65 } 66 testDescriptorType()67 public void testDescriptorType() { 68 assertEquals(CvType.CV_8U, extractor.descriptorType()); 69 } 70 testEmpty()71 public void testEmpty() { 72 assertFalse(extractor.empty()); 73 } 74 testRead()75 public void testRead() { 76 String filename = OpenCVTestRunner.getTempFileName("yml"); 77 writeFile(filename, "%YAML:1.0\ndescriptorSize: 64\n"); 78 79 extractor.read(filename); 80 81 assertEquals(64, extractor.descriptorSize()); 82 } 83 testWrite()84 public void testWrite() { 85 String filename = OpenCVTestRunner.getTempFileName("xml"); 86 87 extractor.write(filename); 88 89 String truth = "<?xml version=\"1.0\"?>\n<opencv_storage>\n<descriptorSize>32</descriptorSize>\n</opencv_storage>\n"; 90 assertEquals(truth, readFile(filename)); 91 } 92 testWriteYml()93 public void testWriteYml() { 94 String filename = OpenCVTestRunner.getTempFileName("yml"); 95 96 extractor.write(filename); 97 98 String truth = "%YAML:1.0\ndescriptorSize: 32\n"; 99 assertEquals(truth, readFile(filename)); 100 } 101 102 } 103