EmguCV/Emgu.CV.Test/AutoTestMat.cs

//----------------------------------------------------------------------------
//  Copyright (C) 2004-2019 by EMGU Corporation. All rights reserved.       
//----------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.Text;
using System.Threading;
using System.Xml;
using System.Xml.Linq;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Features2D;
using Emgu.CV.Structure;
using Emgu.CV.Util;
using Emgu.Util;

#if VS_TEST
using Microsoft.VisualStudio.TestTools.UnitTesting;
using TestAttribute = Microsoft.VisualStudio.TestTools.UnitTesting.TestMethodAttribute;
using TestFixture = Microsoft.VisualStudio.TestTools.UnitTesting.TestClassAttribute;
#elif NETFX_CORE
using Microsoft.VisualStudio.TestPlatform.UnitTestFramework;
using TestAttribute = Microsoft.VisualStudio.TestPlatform.UnitTestFramework.TestMethodAttribute;
using TestFixture = Microsoft.VisualStudio.TestPlatform.UnitTestFramework.TestClassAttribute;
#else
using NUnit.Framework;
#endif

namespace Emgu.CV.Test
{
   [TestFixture]
   public class AutoTestMat
   {
      [TestAttribute]
      public void TestMatCreate()
      {
         Mat m = new Mat();
         var data = m.Data;
         m.Create(10, 12, CvEnum.DepthType.Cv8U, 1);
         m.Create(18, 22, CvEnum.DepthType.Cv64F, 3);
      }

      [TestAttribute]
      public void TestArrToMat()
      {
         Matrix<float> m = new Matrix<float>(320, 240);
         Mat mat = new Mat();
         m.Mat.CopyTo(mat);
         EmguAssert.IsTrue(m.Mat.Depth == DepthType.Cv32F);
         EmguAssert.IsTrue(mat.Depth == DepthType.Cv32F);
      }

      [TestAttribute]
      public void TestMatToByteArray()
      {
          Mat m = new Mat(new Size(320, 240), DepthType.Cv8U, 3);
          byte[] bytes = new byte[m.Total.ToInt32() * m.ElementSize];
          m.CopyTo(bytes);
      }

        [TestAttribute]
      public void TestMatToArr()
      {
         
         Mat mat = new Mat(new Size(320, 240), DepthType.Cv32F, 1);

         Matrix<float> m = new Matrix<float>(mat.Rows, mat.Cols, mat.NumberOfChannels);
         mat.CopyTo(m);

         EmguAssert.IsTrue(m.Mat.Depth == DepthType.Cv32F);
         EmguAssert.IsTrue(mat.Depth == DepthType.Cv32F);
      }

      [TestAttribute]
      public void TestMatEquals()
      {
         Mat m1 = new Mat(640, 320, DepthType.Cv8U, 3);
         m1.SetTo(new MCvScalar(1, 2, 3));
         Mat m2 = new Mat(640, 320, DepthType.Cv8U, 3);
         m2.SetTo(new MCvScalar(1, 2, 3));
         
         EmguAssert.IsTrue(m1.Equals(m2));

      }

      [TestAttribute]
      public void TestMatPixelAccess()
      {
         Mat m1 = EmguAssert.LoadMat("lena.jpg");
         byte[] data = new byte[m1.Width * m1.Height * 3]; //3 channel bgr image data
         GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
         using (Mat m2 = new Mat(m1.Size, DepthType.Cv8U, 3, handle.AddrOfPinnedObject(), m1.Width * 3))
            CvInvoke.BitwiseNot(m1, m2);
         handle.Free();
         //now the data array contains the pixel data of the inverted lena image.
         //note that if the m2 Mat was allocated with the wrong size, data[] array will contains all 0s, and no exception will be thrown
         //so be really careful when performing the above operations.
      }

      [Test]
      public void TestGetRowCol()
      {
         Mat m = new Mat(new Size(2, 2), DepthType.Cv64F, 1);
         double[] value = new double[]
         {
            1, 2, 
            3, 4
         };
         m.SetTo(value);

         Mat secondRow = m.Row(1);
         double[] secondRowValue = new double[2];
         secondRow.CopyTo(secondRowValue);
         EmguAssert.IsTrue(value[2] == secondRowValue[0]);
         EmguAssert.IsTrue(value[3] == secondRowValue[1]);

         Mat secondCol = m.Col(1);
         double[] secondColValue = new double[2];
         secondCol.CopyTo(secondColValue);
         EmguAssert.IsTrue(value[1] == secondColValue[0]);
         EmguAssert.IsTrue(value[3] == secondColValue[1]);
      }

      [TestAttribute]
      public void TestMatToFileStorage()
      {
         //create a matrix m with random values
         Mat m = new Mat(120, 240, DepthType.Cv8U, 1);
         using (ScalarArray low = new ScalarArray(0))
         using (ScalarArray high = new ScalarArray(255))
         CvInvoke.Randu(m, low, high);

         //Convert the random matrix m to yml format, good for matrix that contains values such as calibration, homography etc.
         String mStr;
         using (FileStorage fs = new FileStorage(".yml", FileStorage.Mode.Write | FileStorage.Mode.Memory))
         {
            fs.Write(m, "m");
            mStr = fs.ReleaseAndGetString();
         }

         //Treat the Mat as image data and convert it to png format.
         using (VectorOfByte bytes = new VectorOfByte())
         {
            CvInvoke.Imencode(".png", m, bytes);

            byte[] rawData =  bytes.ToArray();
         }
      }

#if !NETFX_CORE
      [TestAttribute]
      public void TestRuntimeSerialize()
      {
         Mat img = new Mat(100, 80, DepthType.Cv8U, 3);

         using (MemoryStream ms = new MemoryStream())
         {
            //img.SetRandNormal(new MCvScalar(100, 100, 100), new MCvScalar(50, 50, 50));
            //img.SerializationCompressionRatio = 9;
            CvInvoke.SetIdentity(img, new MCvScalar(1, 2, 3));
            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
                formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
            formatter.Serialize(ms, img);
            Byte[] bytes = ms.GetBuffer();

            using (MemoryStream ms2 = new MemoryStream(bytes))
            {
               Object o = formatter.Deserialize(ms2);
               Mat img2 = (Mat)o;
               EmguAssert.IsTrue(img.Equals(img2));
            }
         }
      }
#endif
   }
}