public void computeAndExtract()
        {
            using (detector = new SURF(30))
            using (matcher = new BFMatcher(DistanceType.L2))
            {
                bowDE = new BOWImgDescriptorExtractor(detector, matcher);
                BOWKMeansTrainer bowTrainer = new BOWKMeansTrainer(100, new MCvTermCriteria(100, 0.01), 3, Emgu.CV.CvEnum.KMeansInitType.PPCenters);

                foreach(FileInfo[] folder in _folders)
                    foreach (FileInfo file in folder)
                    {
                        using (Image<Bgr, Byte> model = new Image<Bgr, byte>(file.FullName))
                        using (VectorOfKeyPoint modelKeyPoints = new VectorOfKeyPoint())
                        //Detect SURF key points from images
                        {
                            detector.DetectRaw(model, modelKeyPoints);
                            //Compute detected SURF key points & extract modelDescriptors
                            Mat modelDescriptors = new Mat();
                            detector.Compute(model, modelKeyPoints, modelDescriptors);
                            //Add the extracted BoW modelDescriptors into BOW trainer
                            bowTrainer.Add(modelDescriptors);
                        }
                        input_num++;
                    }

                //Cluster the feature vectors
                bowTrainer.Cluster(vocabulary);

                //Store the vocabulary
                bowDE.SetVocabulary(vocabulary);

                //training descriptors
                tDescriptors = new Mat();

                labels = new Matrix<int>(1, input_num);
                int index = 0;
                //compute and store BOWDescriptors and set labels
                for (int i = 1; i <= _folders.Count; i++)
                {
                    FileInfo[] files = _folders[i-1];
                    for (int j = 0; j < files.Length; j++)
                    {
                        FileInfo file = files[j];
                        using (Image<Bgr, Byte> model = new Image<Bgr, Byte>(file.FullName))
                        using (VectorOfKeyPoint modelKeyPoints = new VectorOfKeyPoint())
                        using (Mat modelBOWDescriptor = new Mat())
                        {
                            detector.DetectRaw(model, modelKeyPoints);
                            bowDE.Compute(model, modelKeyPoints, modelBOWDescriptor);

                            tDescriptors.PushBack(modelBOWDescriptor);
                            labels[0, index++] = i;

                        }
                    }
                }
            }
        }
Exemple #2
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 public Prep_L2BOF(int classnum, string src)
 {
     SecondLayerDic = null;
     directory = src;
     classNum = classnum;
     bowTrainer = new BOWKMeansTrainer(classNum, new MCvTermCriteria(10, 0.01), 3,
     KMeansInitType.PPCenters);
 }
Exemple #3
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 public Prep_L1BOF(int classnum,string loc)
 {
     directory = loc;
     topLayerDic = null;
     classNum = classnum;
     bowTrainer = new BOWKMeansTrainer(classNum, new MCvTermCriteria(10, 0.01), 3,
     KMeansInitType.PPCenters);
 }
Exemple #4
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 public Load_L2BOF(int classnum, string src)
 {
     SecondLayerDic = null;
     directory = src;
     classNum = classnum;
     bowTrainer = new BOWKMeansTrainer(classNum, new MCvTermCriteria(10, 0.01), 3,
     KMeansInitType.PPCenters);
         IFormatter formatter = new BinaryFormatter();
         FileStream fs = File.OpenRead(directory + "\\obj\\dic.xml");
         SecondLayerDic = (Matrix<float>)formatter.Deserialize(fs);
         fs.Dispose();
         bowDe.SetVocabulary(SecondLayerDic);
         SecondLayerSVM = new SVM();
         SecondLayerSVM.Load(directory + "\\obj\\svm.xml");
         Console.WriteLine("Finished Loading L2 SVM.");loaded = true;
 }
Exemple #5
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        public Load_L1BOF(int classnum,string loc)
        {
            prefix = loc;
            topLayerDic = null;
            classNum = classnum;
            bowTrainer = new BOWKMeansTrainer(classNum, new MCvTermCriteria(10, 0.01), 3,
            KMeansInitType.PPCenters);

                IFormatter formatter = new BinaryFormatter();
                FileStream fs = File.OpenRead(loc + "obj\\dic.xml");
                topLayerDic = (Matrix<float>)formatter.Deserialize(fs);
                fs.Dispose();
                bowDe.SetVocabulary(topLayerDic);
                topLayerSVM = new SVM();
                topLayerSVM.Load(loc + "obj\\svm.xml");
                Console.WriteLine("Finished Loading L1 SVM.");
                loaded = true;
        }
Exemple #6
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        public Prep(List<Image<Bgr, byte>> imgs,string directory)
        {
            dir = directory;
            images = imgs;
            bowTrainer = new BOWKMeansTrainer(classNum, new MCvTermCriteria(10, 0.01), 3,
            KMeansInitType.PPCenters);
            labels = new Matrix<float>(images.Count, 1);

            foreach (Image<Bgr, byte> img in images)
            {
                Extract(img);
            }
            MakeDic();
            double i = 1;
            foreach (Image<Bgr, byte> img in images)
            {
                int label_value = Convert.ToInt32(Math.Floor(i));
                MakeDescriptors(img,label_value);
                i += 0.5;
            }
            Save();
        }
Exemple #7
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 //make Dictionarys
 private void MakeDic()
 {
     l1:
     try
     {
         Dic = bowTrainer.Cluster();
         bowDe.SetVocabulary(Dic);
         trainingDescriptors = new Matrix<float>(images.Count, classNum);
     }
     catch (Exception e)
     {
         int int_classnum = classNum;
         int_classnum++;
         trainingDescriptors = new Matrix<float>(images.Count, int_classnum);
         bowTrainer = new BOWKMeansTrainer(int_classnum, new MCvTermCriteria(10, 0.01), 3,
     KMeansInitType.PPCenters);
         goto l1;
     }
 }
Exemple #8
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      public void TestBOWKmeansTrainer2()
      {
         Image<Gray, byte> box = EmguAssert.LoadImage<Gray, byte>("box.png");
         Brisk detector = new Brisk(30, 3, 1.0f);
         VectorOfKeyPoint kpts = new VectorOfKeyPoint();
         Mat descriptors = new Mat();
         detector.DetectAndCompute(box, null, kpts, descriptors, false);
         Mat descriptorsF = new Mat();
         descriptors.ConvertTo(descriptorsF, CvEnum.DepthType.Cv32F);
         //Matrix<float> descriptorsF = descriptors.Convert<float>();
         BOWKMeansTrainer trainer = new BOWKMeansTrainer(100, new MCvTermCriteria(), 3, CvEnum.KMeansInitType.PPCenters);
         trainer.Add(descriptorsF);
         Mat vocabulary = new Mat();
         trainer.Cluster(vocabulary);

         BFMatcher matcher = new BFMatcher(DistanceType.L2);

         BOWImgDescriptorExtractor extractor = new BOWImgDescriptorExtractor(detector, matcher);
         Mat vocabularyByte = new Mat();
         vocabulary.ConvertTo(vocabularyByte, CvEnum.DepthType.Cv8U);
         extractor.SetVocabulary(vocabularyByte);

         Mat descriptors2 = new Mat();
         extractor.Compute(box, kpts, descriptors2);
      }
Exemple #9
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      public void TestBOWKmeansTrainer()
      {
         Image<Gray, byte> box = EmguAssert.LoadImage<Gray, byte>("box.png");
         SURF detector = new SURF(500);
         VectorOfKeyPoint kpts = new VectorOfKeyPoint();
         Mat descriptors = new Mat();
         detector.DetectAndCompute(box, null, kpts, descriptors, false);

         BOWKMeansTrainer trainer = new BOWKMeansTrainer(100, new MCvTermCriteria(), 3, CvEnum.KMeansInitType.PPCenters);
         trainer.Add(descriptors);
         Mat vocabulary = new Mat();
         trainer.Cluster(vocabulary);

         BFMatcher matcher = new BFMatcher(DistanceType.L2);

         BOWImgDescriptorExtractor extractor = new BOWImgDescriptorExtractor(detector, matcher);
         extractor.SetVocabulary(vocabulary);

         Mat descriptors2 = new Mat();
         extractor.Compute(box, kpts, descriptors2);
      }