root/modules/core/misc/java/test/MatTest.java

DEFINITIONS

1. testAdjustROI
2. testAssignToMat
3. testAssignToMatInt
4. testChannels
5. testCheckVectorInt
6. testCheckVectorIntInt
7. testCheckVectorIntIntBoolean
8. testClone
9. testCol
10. testColRangeIntInt
11. testColRangeRange
12. testCols
13. testConvertToMatInt
14. testConvertToMatIntDouble
15. testConvertToMatIntDoubleDouble
16. testCopyToMat
17. testCopyToMatMat
18. testCreateIntIntInt
19. testCreateSizeInt
20. testCross
21. testDataAddr
22. testDepth
23. testDiag
24. testDiagInt
25. testDiagMat
26. testDiagMat_sqrMatrix
27. testDot
28. testDump
29. testElemSize
30. testElemSize1
31. testEmpty
32. testEyeIntIntInt
33. testEyeSizeInt
34. getTestMat
35. testGetIntInt_8U
36. testGetIntInt_32S
37. testGetIntInt_64F
38. testGetIntIntByteArray
39. testGetIntIntDoubleArray
40. testGetIntIntFloatArray
41. testGetIntIntIntArray
42. testGetIntIntShortArray
43. testGetNativeObjAddr
44. testHeight
45. testInv
46. testInvInt
47. testIsContinuous
48. testIsSubmatrix
49. testLocateROI
50. testMat
51. testMatIntIntCvType
52. testMatIntIntCvTypeScalar
53. testMatIntIntInt
54. testMatIntIntIntScalar
55. testMatMatRange
56. testMatMatRangeRange
57. testMatMatRect
58. testMatSizeInt
59. testMatSizeIntScalar
60. testMulMat
61. testMulMatDouble
62. testOnesIntIntInt
63. testOnesSizeInt
64. testPush_back
65. testPutIntIntByteArray
66. testPutIntIntDoubleArray
67. testPutIntIntFloatArray
68. testPutIntIntIntArray
69. testPutIntIntShortArray
70. testRelease
71. testReshapeInt
72. testReshapeIntInt
73. testRow
74. testRowRangeIntInt
75. testRowRangeRange
76. testRows
77. testSetToMat
78. testSetToMatMat
79. testSetToScalar
80. testSetToScalarMask
81. testSize
82. testStep1
83. testStep1Int
84. testSubmatIntIntIntInt
85. testSubmatRangeRange
86. testSubmatRect
87. testT
88. testToString
89. testTotal
90. testType
91. testWidth
92. testZerosIntIntInt
93. testZerosSizeInt

package org.opencv.test.core;

import java.util.Arrays;

import org.opencv.core.Core;
import org.opencv.core.CvException;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Range;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.core.Size;
import org.opencv.test.OpenCVTestCase;

public class MatTest extends OpenCVTestCase {

    public void testAdjustROI() {
        Mat roi = gray0.submat(3, 5, 7, 10);
        Mat originalroi = roi.clone();

        Mat adjusted = roi.adjustROI(2, 2, 2, 2);

        assertMatEqual(adjusted, roi);
        assertSizeEquals(new Size(5, 6), adjusted.size(), EPS);
        assertEquals(originalroi.type(), adjusted.type());
        assertTrue(adjusted.isSubmatrix());
        assertFalse(adjusted.isContinuous());

        Point offset = new Point();
        Size size = new Size();
        adjusted.locateROI(size, offset);
        assertPointEquals(new Point(5, 1), offset, EPS);
        assertSizeEquals(gray0.size(), size, EPS);
    }

    public void testAssignToMat() {
        gray0.assignTo(dst);

        assertMatEqual(gray0, dst);

        gray255.assignTo(dst);

        assertMatEqual(gray255, dst);
    }

    public void testAssignToMatInt() {
        gray255.assignTo(dst, CvType.CV_32F);

        assertMatEqual(gray255_32f, dst, EPS);
    }

    public void testChannels() {
        assertEquals(1, gray0.channels());
        assertEquals(3, rgbLena.channels());
        assertEquals(4, rgba0.channels());
    }

    public void testCheckVectorInt() {
        // ! returns N if the matrix is 1-channel (N x ptdim) or ptdim-channel
        // (1 x N) or (N x 1); negative number otherwise
        assertEquals(2, new Mat(2, 10, CvType.CV_8U).checkVector(10));
        assertEquals(2, new Mat(1, 2, CvType.CV_8UC(10)).checkVector(10));
        assertEquals(2, new Mat(2, 1, CvType.CV_8UC(10)).checkVector(10));
        assertEquals(10, new Mat(1, 10, CvType.CV_8UC2).checkVector(2));

        assertTrue(0 > new Mat().checkVector(0));
        assertTrue(0 > new Mat(10, 1, CvType.CV_8U).checkVector(10));
        assertTrue(0 > new Mat(10, 20, CvType.CV_8U).checkVector(10));
    }

    public void testCheckVectorIntInt() {
        assertEquals(2, new Mat(2, 10, CvType.CV_8U).checkVector(10, CvType.CV_8U));
        assertEquals(2, new Mat(1, 2, CvType.CV_8UC(10)).checkVector(10, CvType.CV_8U));
        assertEquals(2, new Mat(2, 1, CvType.CV_8UC(10)).checkVector(10, CvType.CV_8U));
        assertEquals(10, new Mat(1, 10, CvType.CV_8UC2).checkVector(2, CvType.CV_8U));

        assertTrue(0 > new Mat(2, 10, CvType.CV_8U).checkVector(10, CvType.CV_8S));
        assertTrue(0 > new Mat(1, 2, CvType.CV_8UC(10)).checkVector(10, CvType.CV_8S));
        assertTrue(0 > new Mat(2, 1, CvType.CV_8UC(10)).checkVector(10, CvType.CV_8S));
        assertTrue(0 > new Mat(1, 10, CvType.CV_8UC2).checkVector(10, CvType.CV_8S));
    }

    public void testCheckVectorIntIntBoolean() {
        Mat mm = new Mat(5, 1, CvType.CV_8UC(10));
        Mat roi = new Mat(5, 3, CvType.CV_8UC(10)).submat(1, 3, 2, 3);

        assertEquals(5, mm.checkVector(10, CvType.CV_8U, true));
        assertEquals(5, mm.checkVector(10, CvType.CV_8U, false));
        assertEquals(2, roi.checkVector(10, CvType.CV_8U, false));
        assertTrue(0 > roi.checkVector(10, CvType.CV_8U, true));
    }

    public void testClone() {
        dst = gray0.clone();
        assertMatEqual(gray0, dst);
        assertFalse(gray0.getNativeObjAddr() == dst.getNativeObjAddr());
        assertFalse(gray0.dataAddr() == dst.dataAddr());
    }

    public void testCol() {
        Mat col = gray0.col(0);
        assertEquals(1, col.cols());
        assertEquals(gray0.rows(), col.rows());
    }

    public void testColRangeIntInt() {
        Mat cols = gray0.colRange(0, gray0.cols() / 2);

        assertEquals(gray0.cols() / 2, cols.cols());
        assertEquals(gray0.rows(), cols.rows());
    }

    public void testColRangeRange() {
        Range range = new Range(0, 5);
        dst = gray0.colRange(range);

        truth = new Mat(10, 5, CvType.CV_8UC1, new Scalar(0.0));
        assertMatEqual(truth, dst);
    }

    public void testCols() {
        assertEquals(matSize, gray0.cols());
    }

    public void testConvertToMatInt() {
        gray255.convertTo(dst, CvType.CV_32F);

        truth = new Mat(matSize, matSize, CvType.CV_32F, new Scalar(255));
        assertMatEqual(truth, dst, EPS);
    }

    public void testConvertToMatIntDouble() {
        gray2.convertTo(dst, CvType.CV_16U, 2.0);

        truth = new Mat(matSize, matSize, CvType.CV_16U, new Scalar(4));
        assertMatEqual(truth, dst);
    }

    public void testConvertToMatIntDoubleDouble() {
        gray0_32f.convertTo(dst, CvType.CV_8U, 2.0, 4.0);

        truth = new Mat(matSize, matSize, CvType.CV_8U, new Scalar(4));
        assertMatEqual(truth, dst);
    }

    public void testCopyToMat() {
        rgbLena.copyTo(dst);
        assertMatEqual(rgbLena, dst);
    }

    public void testCopyToMatMat() {
        Mat src = new Mat(4, 4, CvType.CV_8U, new Scalar(5));
        Mat mask = makeMask(src.clone());

        src.copyTo(dst, mask);

        truth = new Mat(4, 4, CvType.CV_8U) {
            {
                put(0, 0, 0, 0, 5, 5);
                put(1, 0, 0, 0, 5, 5);
                put(2, 0, 0, 0, 5, 5);
                put(3, 0, 0, 0, 5, 5);
            }
        };
        assertMatEqual(truth, dst);

    }

    public void testCreateIntIntInt() {
        gray255.create(4, 5, CvType.CV_32F);

        assertEquals(4, gray255.rows());
        assertEquals(5, gray255.cols());
        assertEquals(CvType.CV_32F, gray255.type());
    }

    public void testCreateSizeInt() {
        Size size = new Size(5, 5);
        dst.create(size, CvType.CV_16U);

        assertEquals(5, dst.rows());
        assertEquals(5, dst.cols());
        assertEquals(CvType.CV_16U, dst.type());
    }

    public void testCross() {
        Mat answer = new Mat(1, 3, CvType.CV_32F);
        answer.put(0, 0, 7.0, 1.0, -5.0);

        Mat cross = v1.cross(v2);
        assertMatEqual(answer, cross, EPS);
    }

    public void testDataAddr() {
        assertTrue(0 != gray0.dataAddr());
        assertEquals(0, new Mat().dataAddr());
    }

    public void testDepth() {
        assertEquals(CvType.CV_8U, gray0.depth());
        assertEquals(CvType.CV_32F, gray0_32f.depth());
    }

    public void testDiag() {
        dst = gray0.diag();

        truth = new Mat(10, 1, CvType.CV_8UC1, new Scalar(0));
        assertMatEqual(truth, dst);
    }

    public void testDiagInt() {
        dst = gray255.diag(2);

        truth = new Mat(8, 1, CvType.CV_8UC1, new Scalar(255));
        assertMatEqual(truth, dst);
    }

    public void testDiagMat() {
        Mat diagVector = new Mat(matSize, 1, CvType.CV_32F, new Scalar(1));

        dst = Mat.diag(diagVector);

        assertMatEqual(grayE_32f, dst, EPS);
    }

    public void testDiagMat_sqrMatrix() {
        try {
            dst = Mat.diag(gray255);
        } catch (CvException e) {
            // expected
        }
    }

    public void testDot() {
        double s = v1.dot(v2);
        assertEquals(11.0, s);
    }

    public void testDump() {
        assertEquals("[1, 3, 2]", v1.dump());
    }

    public void testElemSize() {
        assertEquals(Byte.SIZE / 8 * gray0.channels(), gray0.elemSize());
        assertEquals(Float.SIZE / 8 * gray0_32f.channels(), gray0_32f.elemSize());
        assertEquals(Byte.SIZE / 8 * rgbLena.channels(), rgbLena.elemSize());
    }

    public void testElemSize1() {
        assertEquals(Byte.SIZE / 8, gray255.elemSize1());
        assertEquals(Double.SIZE / 8, gray0_64f.elemSize1());
        assertEquals(Byte.SIZE / 8, rgbLena.elemSize1());
    }

    public void testEmpty() {
        assertTrue(dst.empty());
        assertTrue(!gray0.empty());
    }

    public void testEyeIntIntInt() {
        Mat eye = Mat.eye(3, 3, CvType.CV_32FC1);

        assertMatEqual(eye, eye.inv(), EPS);
    }

    public void testEyeSizeInt() {
        Size size = new Size(5, 5);

        Mat eye = Mat.eye(size, CvType.CV_32S);

        assertEquals(5, Core.countNonZero(eye));

    }

    public Mat getTestMat(int size, int type) {
        Mat m = new Mat(size, size, type);
        final int ch = CvType.channels(type);
        double buff[] = new double[size*size * ch];
        for(int i=0; i<size; i++)
            for(int j=0; j<size; j++)
                for(int k=0; k<ch; k++) {
                    buff[i*size*ch + j*ch + k] = 100*i + 10*j + k;
                }
        m.put(0, 0, buff);
        return m;
    }

    public void testGetIntInt_8U() {
        Mat m = getTestMat(5, CvType.CV_8UC2);

        // whole Mat
        assertTrue(Arrays.equals(new double[] {0, 1}, m.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {240, 241}, m.get(2, 4)));
        assertTrue(Arrays.equals(new double[] {255, 255}, m.get(4, 4)));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        assertTrue(Arrays.equals(new double[] {230, 231}, sm.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {255, 255}, sm.get(1, 1)));
    }

    public void testGetIntInt_32S() {
        Mat m = getTestMat(5, CvType.CV_32SC3);

        // whole Mat
        assertTrue(Arrays.equals(new double[] {0, 1, 2}, m.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {240, 241, 242}, m.get(2, 4)));
        assertTrue(Arrays.equals(new double[] {440, 441, 442}, m.get(4, 4)));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        assertTrue(Arrays.equals(new double[] {230, 231, 232}, sm.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {340, 341, 342}, sm.get(1, 1)));
    }

    public void testGetIntInt_64F() {
        Mat m = getTestMat(5, CvType.CV_64FC1);

        // whole Mat
        assertTrue(Arrays.equals(new double[] {0}, m.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {240}, m.get(2, 4)));
        assertTrue(Arrays.equals(new double[] {440}, m.get(4, 4)));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        assertTrue(Arrays.equals(new double[] {230}, sm.get(0, 0)));
        assertTrue(Arrays.equals(new double[] {340}, sm.get(1, 1)));
    }

    public void testGetIntIntByteArray() {
        Mat m = getTestMat(5, CvType.CV_8UC3);
        byte[] goodData = new byte[9];
        byte[] badData = new byte[7];

        // whole Mat
        int bytesNum = m.get(1, 1, goodData);

        assertEquals(9, bytesNum);
        assertTrue(Arrays.equals(new byte[] { 110, 111, 112, 120, 121, 122, (byte) 130, (byte) 131, (byte) 132 }, goodData));

        try {
            m.get(2, 2, badData);
            fail("Expected UnsupportedOperationException (data.length % CvType.channels(t) != 0)");
        } catch (UnsupportedOperationException e) {
            // expected
        }

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        byte buff00[] = new byte[3];
        bytesNum = sm.get(0, 0, buff00);
        assertEquals(3, bytesNum);
        assertTrue(Arrays.equals(new byte[] {(byte) 230, (byte) 231, (byte) 232}, buff00));
        byte buff11[] = new byte[3];
        bytesNum = sm.get(1, 1, buff11);
        assertEquals(3, bytesNum);
        assertTrue(Arrays.equals(new byte[] {(byte) 255, (byte) 255, (byte) 255}, buff11));
    }

    public void testGetIntIntDoubleArray() {
        Mat m = getTestMat(5, CvType.CV_64F);
        double buff[] = new double[4];

        // whole Mat
        int bytesNum = m.get(1, 1, buff);

        assertEquals(32, bytesNum);
        assertTrue(Arrays.equals(new double[] { 110, 120, 130, 140 }, buff));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        double buff00[] = new double[2];
        bytesNum = sm.get(0, 0, buff00);
        assertEquals(16, bytesNum);
        assertTrue(Arrays.equals(new double[] {230, 240}, buff00));
        double buff11[] = new double[] {0, 0};
        bytesNum = sm.get(1, 1, buff11);
        assertEquals(8, bytesNum);
        assertTrue(Arrays.equals(new double[] {340, 0}, buff11));
}

    public void testGetIntIntFloatArray() {
        Mat m = getTestMat(5, CvType.CV_32F);
        float buff[] = new float[4];

        // whole Mat
        int bytesNum = m.get(1, 1, buff);

        assertEquals(16, bytesNum);
        assertTrue(Arrays.equals(new float[] { 110, 120, 130, 140 }, buff));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        float buff00[] = new float[2];
        bytesNum = sm.get(0, 0, buff00);
        assertEquals(8, bytesNum);
        assertTrue(Arrays.equals(new float[] {230, 240}, buff00));
        float buff11[] = new float[] {0, 0};
        bytesNum = sm.get(1, 1, buff11);
        assertEquals(4, bytesNum);
        assertTrue(Arrays.equals(new float[] {340, 0}, buff11));
    }

    public void testGetIntIntIntArray() {
        Mat m = getTestMat(5, CvType.CV_32SC2);
        int[] buff = new int[6];

        // whole Mat
        int bytesNum = m.get(1, 1, buff);

        assertEquals(24, bytesNum);
        assertTrue(Arrays.equals(new int[] { 110, 111, 120, 121, 130, 131 }, buff));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        int buff00[] = new int[4];
        bytesNum = sm.get(0, 0, buff00);
        assertEquals(16, bytesNum);
        assertTrue(Arrays.equals(new int[] {230, 231, 240, 241}, buff00));
        int buff11[] = new int[]{0, 0, 0, 0};
        bytesNum = sm.get(1, 1, buff11);
        assertEquals(8, bytesNum);
        assertTrue(Arrays.equals(new int[] {340, 341, 0, 0}, buff11));
    }

    public void testGetIntIntShortArray() {
        Mat m = getTestMat(5, CvType.CV_16SC2);
        short[] buff = new short[6];

        // whole Mat
        int bytesNum = m.get(1, 1, buff);

        assertEquals(12, bytesNum);
        assertTrue(Arrays.equals(new short[] { 110, 111, 120, 121, 130, 131 }, buff));

        // sub-Mat
        Mat sm = m.submat(2, 4, 3, 5);
        short buff00[] = new short[4];
        bytesNum = sm.get(0, 0, buff00);
        assertEquals(8, bytesNum);
        assertTrue(Arrays.equals(new short[] {230, 231, 240, 241}, buff00));
        short buff11[] = new short[]{0, 0, 0, 0};
        bytesNum = sm.get(1, 1, buff11);
        assertEquals(4, bytesNum);
        assertTrue(Arrays.equals(new short[] {340, 341, 0, 0}, buff11));
    }

    public void testGetNativeObjAddr() {
        assertTrue(0 != gray0.getNativeObjAddr());
    }

    public void testHeight() {
        assertEquals(gray0.rows(), gray0.height());
        assertEquals(rgbLena.rows(), rgbLena.height());
        assertEquals(rgba128.rows(), rgba128.height());
    }

    public void testInv() {
        dst = grayE_32f.inv();
        assertMatEqual(grayE_32f, dst, EPS);
    }

    public void testInvInt() {
        Mat src = new Mat(2, 2, CvType.CV_32F) {
            {
                put(0, 0, 1.0);
                put(0, 1, 2.0);
                put(1, 0, 1.5);
                put(1, 1, 4.0);
            }
        };

        dst = src.inv(Core.DECOMP_CHOLESKY);

        truth = new Mat(2, 2, CvType.CV_32F) {
            {
                put(0, 0, 4.0);
                put(0, 1, -2.0);
                put(1, 0, -1.5);
                put(1, 1, 1.0);
            }
        };

        assertMatEqual(truth, dst, EPS);
    }

    public void testIsContinuous() {
        assertTrue(gray0.isContinuous());

        Mat subMat = gray0.submat(0, 0, gray0.rows() / 2, gray0.cols() / 2);
        assertFalse(subMat.isContinuous());
    }

    public void testIsSubmatrix() {
        assertFalse(gray0.isSubmatrix());
        Mat subMat = gray0.submat(0, 0, gray0.rows() / 2, gray0.cols() / 2);
        assertTrue(subMat.isSubmatrix());
    }

    public void testLocateROI() {
        Mat roi = gray0.submat(3, 5, 7, 10);
        Point offset = new Point();
        Size size = new Size();

        roi.locateROI(size, offset);

        assertPointEquals(new Point(7, 3), offset, EPS);
        assertSizeEquals(new Size(10, 10), size, EPS);
    }

    public void testMat() {
        Mat m = new Mat();
        assertNotNull(m);
        assertTrue(m.empty());
    }

    public void testMatIntIntCvType() {
        Mat gray = new Mat(1, 1, CvType.CV_8UC1);
        assertFalse(gray.empty());

        Mat rgb = new Mat(1, 1, CvType.CV_8UC3);
        assertFalse(rgb.empty());
    }

    public void testMatIntIntCvTypeScalar() {
        dst = new Mat(gray127.rows(), gray127.cols(), CvType.CV_8U, new Scalar(127));
        assertFalse(dst.empty());
        assertMatEqual(dst, gray127);

        dst = new Mat(rgba128.rows(), rgba128.cols(), CvType.CV_8UC4, Scalar.all(128));
        assertFalse(dst.empty());
        assertMatEqual(dst, rgba128);
    }

    public void testMatIntIntInt() {
        Mat gray = new Mat(1, 1, CvType.CV_8U);
        assertFalse(gray.empty());

        Mat rgb = new Mat(1, 1, CvType.CV_8U);
        assertFalse(rgb.empty());
    }

    public void testMatIntIntIntScalar() {
        Mat m1 = new Mat(gray127.rows(), gray127.cols(), CvType.CV_8U, new Scalar(127));
        assertFalse(m1.empty());
        assertMatEqual(m1, gray127);

        Mat m2 = new Mat(gray0_32f.rows(), gray0_32f.cols(), CvType.CV_32F, new Scalar(0));
        assertFalse(m2.empty());
        assertMatEqual(m2, gray0_32f, EPS);
    }

    public void testMatMatRange() {
        dst = new Mat(gray0, new Range(0, 5));

        truth = new Mat(5, 10, CvType.CV_8UC1, new Scalar(0));
        assertFalse(dst.empty());
        assertMatEqual(truth, dst);
    }

    public void testMatMatRangeRange() {
        dst = new Mat(gray255_32f, new Range(0, 5), new Range(0, 5));

        truth = new Mat(5, 5, CvType.CV_32FC1, new Scalar(255));

        assertFalse(dst.empty());
        assertMatEqual(truth, dst, EPS);
    }

    public void testMatMatRect() {
        Mat m = new Mat(7, 6, CvType.CV_32SC1);
        m.put(0,  0,
                 0,  1,  2,  3,  4,  5,
                10, 11, 12, 13, 14, 15,
                20, 21, 22, 23, 24, 25,
                30, 31, 32, 33, 34, 35,
                40, 41, 42, 43, 44, 45,
                50, 51, 52, 53, 54, 55,
                60, 61, 62, 63, 64, 65 );

        dst = new Mat(m, new Rect(1, 2, 3, 4));

        truth = new Mat(4, 3, CvType.CV_32SC1);
        truth.put(0,  0,
                21, 22, 23,
                31, 32, 33,
                41, 42, 43,
                51, 52, 53 );

        assertFalse(dst.empty());
        assertMatEqual(truth, dst);
    }

    public void testMatSizeInt() {
        dst = new Mat(new Size(10, 10), CvType.CV_8U);

        assertFalse(dst.empty());
    }

    public void testMatSizeIntScalar() {
        dst = new Mat(new Size(10, 10), CvType.CV_32F, new Scalar(255));

        assertFalse(dst.empty());
        assertMatEqual(gray255_32f, dst, EPS);
    }

    public void testMulMat() {
        assertMatEqual(gray0, gray0.mul(gray255));

        Mat m1 = new Mat(2, 2, CvType.CV_32F, new Scalar(2));
        Mat m2 = new Mat(2, 2, CvType.CV_32F, new Scalar(3));

        dst = m1.mul(m2);

        truth = new Mat(2, 2, CvType.CV_32F, new Scalar(6));
        assertMatEqual(truth, dst, EPS);

    }

    public void testMulMatDouble() {
        Mat m1 = new Mat(2, 2, CvType.CV_32F, new Scalar(2));
        Mat m2 = new Mat(2, 2, CvType.CV_32F, new Scalar(3));

        dst = m1.mul(m2, 3.0);

        truth = new Mat(2, 2, CvType.CV_32F, new Scalar(18));
        assertMatEqual(truth, dst, EPS);
    }

    public void testOnesIntIntInt() {
        dst = Mat.ones(matSize, matSize, CvType.CV_32F);

        truth = new Mat(matSize, matSize, CvType.CV_32F, new Scalar(1));
        assertMatEqual(truth, dst, EPS);
    }

    public void testOnesSizeInt() {
        dst = Mat.ones(new Size(2, 2), CvType.CV_16S);
        truth = new Mat(2, 2, CvType.CV_16S, new Scalar(1));
        assertMatEqual(truth, dst);
    }

    public void testPush_back() {
        Mat m1 = new Mat(2, 4, CvType.CV_32F, new Scalar(2));
        Mat m2 = new Mat(3, 4, CvType.CV_32F, new Scalar(3));

        m1.push_back(m2);

        truth = new Mat(5, 4, CvType.CV_32FC1) {
            {
                put(0, 0, 2, 2, 2, 2);
                put(1, 0, 2, 2, 2, 2);
                put(2, 0, 3, 3, 3, 3);
                put(3, 0, 3, 3, 3, 3);
                put(4, 0, 3, 3, 3, 3);
            }
        };

        assertMatEqual(truth, m1, EPS);
    }

    public void testPutIntIntByteArray() {
        Mat m = new Mat(5, 5, CvType.CV_8UC3, new Scalar(1, 2, 3));
        Mat sm = m.submat(2, 4, 3, 5);
        byte[] buff  = new byte[] { 0, 0, 0, 0, 0, 0 };
        byte[] buff0 = new byte[] { 10, 20, 30, 40, 50, 60 };
        byte[] buff1 = new byte[] { -1, -2, -3, -4, -5, -6 };

        int bytesNum = m.put(1, 2, buff0);

        assertEquals(6, bytesNum);
        bytesNum = m.get(1, 2, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, buff0));

        bytesNum = sm.put(0, 0, buff1);

        assertEquals(6, bytesNum);
        bytesNum = sm.get(0, 0, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, buff1));
        bytesNum = m.get(2, 3, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, buff1));

        Mat m1 = m.row(1);
        bytesNum = m1.get(0, 2, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, buff0));

        try {
            byte[] bytes2 = new byte[] { 10, 20, 30, 40, 50 };
            m.put(2, 2, bytes2);
            fail("Expected UnsupportedOperationException (data.length % CvType.channels(t) != 0)");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }

    public void testPutIntIntDoubleArray() {
        Mat m = new Mat(5, 5, CvType.CV_8UC3, new Scalar(1, 2, 3));
        Mat sm = m.submat(2, 4, 3, 5);
        byte[] buff  = new byte[] { 0, 0, 0, 0, 0, 0 };

        int bytesNum = m.put(1, 2, 10, 20, 30, 40, 50, 60);

        assertEquals(6, bytesNum);
        bytesNum = m.get(1, 2, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, new byte[]{10, 20, 30, 40, 50, 60}));

        bytesNum = sm.put(0, 0, 255, 254, 253, 252, 251, 250);

        assertEquals(6, bytesNum);
        bytesNum = sm.get(0, 0, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, new byte[]{-1, -2, -3, -4, -5, -6}));
        bytesNum = m.get(2, 3, buff);
        assertEquals(6, bytesNum);
        assertTrue(Arrays.equals(buff, new byte[]{-1, -2, -3, -4, -5, -6}));
    }

    public void testPutIntIntFloatArray() {
        Mat m = new Mat(5, 5, CvType.CV_32FC3, new Scalar(1, 2, 3));
        float[] elements = new float[] { 10, 20, 30, 40, 50, 60 };

        int bytesNum = m.put(4, 3, elements);

        assertEquals(elements.length * 4, bytesNum);
        Mat m1 = m.row(4);
        float buff[] = new float[3];
        bytesNum = m1.get(0, 4, buff);
        assertEquals(buff.length * 4, bytesNum);
        assertTrue(Arrays.equals(new float[]{40, 50, 60}, buff));
        assertArrayEquals(new double[]{10, 20, 30}, m.get(4, 3), EPS);

        try {
            float[] elements2 = new float[] { 10, 20, 30, 40, 50 };
            m.put(2, 2, elements2);
            fail("Expected UnsupportedOperationException (data.length % CvType.channels(t) != 0)");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }

    public void testPutIntIntIntArray() {
        Mat m = new Mat(5, 5, CvType.CV_32SC3, new Scalar(-1, -2, -3));
        int[] elements = new int[] { 10, 20, 30, 40, 50, 60 };

        int bytesNum = m.put(0, 4, elements);

        assertEquals(elements.length * 4, bytesNum);
        Mat m1 = m.col(4);
        int buff[] = new int[3];
        bytesNum = m1.get(0, 0, buff);
        assertEquals(buff.length * 4, bytesNum);
        assertTrue(Arrays.equals(new int[]{10, 20, 30}, buff));
        assertArrayEquals(new double[]{40, 50, 60}, m.get(1, 0), EPS);

        try {
            int[] elements2 = new int[] { 10, 20, 30, 40, 50 };
            m.put(2, 2, elements2);
            fail("Expected UnsupportedOperationException (data.length % CvType.channels(t) != 0)");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }

    public void testPutIntIntShortArray() {
        Mat m = new Mat(5, 5, CvType.CV_16SC3, new Scalar(-1, -2, -3));
        short[] elements = new short[] { 10, 20, 30, 40, 50, 60 };

        int bytesNum = m.put(2, 3, elements);

        assertEquals(elements.length * 2, bytesNum);
        Mat m1 = m.col(3);
        short buff[] = new short[3];
        bytesNum = m1.get(2, 0, buff);
        assertTrue(Arrays.equals(new short[]{10, 20, 30}, buff));
        assertArrayEquals(new double[]{40, 50, 60}, m.get(2, 4), EPS);

        try {
            short[] elements2 = new short[] { 10, 20, 30, 40, 50 };
            m.put(2, 2, elements2);
            fail("Expected UnsupportedOperationException (data.length % CvType.channels(t) != 0)");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }

    public void testRelease() {
        assertFalse(gray0.empty());
        assertTrue(gray0.rows() > 0);

        gray0.release();

        assertTrue(gray0.empty());
        assertEquals(0, gray0.rows());
        assertEquals(0, gray0.dataAddr());
    }

    public void testReshapeInt() {
        Mat src = new Mat(4, 4, CvType.CV_8U, new Scalar(0));
        dst = src.reshape(4);

        truth = new Mat(4, 1, CvType.CV_8UC4, new Scalar(0));
        assertMatEqual(truth, dst);
    }

    public void testReshapeIntInt() {
        Mat src = new Mat(5, 7, CvType.CV_8U, new Scalar(0));
        dst = src.reshape(7, 5);

        truth = new Mat(5, 1, CvType.CV_8UC(7), new Scalar(0));
        assertMatEqual(truth, dst);
    }

    public void testRow() {
        Mat row = gray0.row(0);
        assertEquals(1, row.rows());
        assertEquals(gray0.cols(), row.cols());
    }

    public void testRowRangeIntInt() {
        Mat rows = gray0.rowRange(0, gray0.rows() / 2);
        assertEquals(gray0.rows() / 2, rows.rows());
        assertEquals(gray0.cols(), rows.cols());
    }

    public void testRowRangeRange() {
        Mat rows = gray255.rowRange(new Range(0, 5));

        assertEquals(gray255.rows() / 2, rows.rows());
        assertEquals(gray255.cols(), rows.cols());
    }

    public void testRows() {
        assertEquals(matSize, gray0.rows());
    }

    public void testSetToMat() {
        Mat vals = new Mat(7, 1, CvType.CV_8U) {
            {
                put(0, 0, 1, 2, 3, 4, 5, 6, 7);
            }
        };
        Mat dst = new Mat(1, 1, CvType.CV_8UC(7));

        dst.setTo(vals);

        Mat truth = new Mat(1, 1, CvType.CV_8UC(7)) {
            {
                put(0, 0, 1, 2, 3, 4, 5, 6, 7);
            }
        };
        assertMatEqual(truth, dst);
    }

    public void testSetToMatMat() {
        Mat vals = new Mat(7, 1, CvType.CV_8U) {
            {
                put(0, 0, 1, 2, 3, 4, 5, 6, 7);
            }
        };
        Mat dst = Mat.zeros(2, 1, CvType.CV_8UC(7));
        Mat mask = new Mat(2, 1, CvType.CV_8U) {
            {
                put(0, 0, 0, 1);
            }
        };

        dst.setTo(vals, mask);

        Mat truth = new Mat(2, 1, CvType.CV_8UC(7)) {
            {
                put(0, 0, 0, 0, 0, 0, 0, 0, 0);
                put(1, 0, 1, 2, 3, 4, 5, 6, 7);
            }
        };
        assertMatEqual(truth, dst);
    }

    public void testSetToScalar() {
        gray0.setTo(new Scalar(127));
        assertMatEqual(gray127, gray0);
    }

    public void testSetToScalarMask() {
        Mat mask = gray0.clone();
        mask.put(1, 1, 1, 2, 3);
        gray0.setTo(new Scalar(1), mask);
        assertEquals(3, Core.countNonZero(gray0));
        Core.subtract(gray0, mask, gray0);
        assertEquals(0, Core.countNonZero(gray0));
    }

    public void testSize() {
        assertEquals(new Size(matSize, matSize), gray0.size());

        assertEquals(new Size(3, 1), v1.size());
    }

    public void testStep1() {
        assertEquals(matSize * CvType.channels(CvType.CV_8U), gray0.step1());

        assertEquals(3, v2.step1());
    }

    public void testStep1Int() {
        Mat roi = rgba0.submat(3, 5, 7, 10);
        Mat m = roi.clone();

        assertTrue(rgba0.channels() * rgba0.cols() <= roi.step1(0));
        assertEquals(rgba0.channels(), roi.step1(1));
        assertTrue(m.channels() * (10 - 7) <= m.step1(0));
        assertEquals(m.channels(), m.step1(1));
    }

    public void testSubmatIntIntIntInt() {
        Mat submat = gray0.submat(0, gray0.rows() / 2, 0, gray0.cols() / 2);

        assertTrue(submat.isSubmatrix());
        assertFalse(submat.isContinuous());
        assertEquals(gray0.rows() / 2, submat.rows());
        assertEquals(gray0.cols() / 2, submat.cols());
    }

    public void testSubmatRangeRange() {
        Mat submat = gray255.submat(new Range(2, 4), new Range(2, 4));
        assertTrue(submat.isSubmatrix());
        assertFalse(submat.isContinuous());

        assertEquals(2, submat.rows());
        assertEquals(2, submat.cols());
    }

    public void testSubmatRect() {
        Mat submat = gray255.submat(new Rect(5, gray255.rows() / 2, 5, gray255.cols() / 2));
        assertTrue(submat.isSubmatrix());
        assertFalse(submat.isContinuous());

        assertEquals(gray255.rows() / 2, submat.rows());
        assertEquals(gray255.cols() / 2, submat.cols());
    }

    public void testT() {
        assertMatEqual(gray255, gray255.t());

        Mat src = new Mat(3, 3, CvType.CV_16U) {
            {
                put(0, 0, 1, 2, 4);
                put(1, 0, 7, 5, 0);
                put(2, 0, 3, 4, 6);
            }
        };

        dst = src.t();

        truth = new Mat(3, 3, CvType.CV_16U) {
            {
                put(0, 0, 1, 7, 3);
                put(1, 0, 2, 5, 4);
                put(2, 0, 4, 0, 6);
            }
        };
        assertMatEqual(truth, dst);
    }

    public void testToString() {
        assertTrue(null != gray0.toString());
    }

    public void testTotal() {
        int nElements = gray0.rows() * gray0.cols();
        assertEquals(nElements, gray0.total());
    }

    public void testType() {
        assertEquals(CvType.CV_8UC1, gray0.type());
        assertEquals(CvType.CV_32FC1, gray0_32f.type());
        assertEquals(CvType.CV_8UC3, rgbLena.type());
    }

    public void testWidth() {
        assertEquals(gray0.cols(), gray0.width());
        assertEquals(rgbLena.cols(), rgbLena.width());
        assertEquals(rgba128.cols(), rgba128.width());
    }

    public void testZerosIntIntInt() {
        dst = Mat.zeros(matSize, matSize, CvType.CV_32F);

        assertMatEqual(gray0_32f, dst, EPS);
    }

    public void testZerosSizeInt() {
        dst = Mat.zeros(new Size(2, 2), CvType.CV_16S);

        truth = new Mat(2, 2, CvType.CV_16S, new Scalar(0));
        assertMatEqual(truth, dst);
    }

}