updated or_sun dataset loader

modules/datasets/include/opencv2/datasets/or_sun.hpp

@@ -56,8 +56,8 @@ namespace datasets
 
 struct OR_sunObj : public Object
 {
+    int label;
     std::string name;
-    std::vector<std::string> imageNames;
 };
 
 class CV_EXPORTS OR_sun : public Dataset
@@ -66,6 +66,8 @@ public:
     virtual void load(const std::string &path) = 0;
 
     static Ptr<OR_sun> create();
+
+    std::vector<std::string> paths;
 };
 
 }

modules/datasets/samples/or_sun.cpp

@@ -70,16 +70,15 @@ int main(int argc, char *argv[])
 
     // ***************
     // dataset contains for each object its images.
-    // For example, let output dataset size and last object.
+    // For example, let output splits number, dataset size and last image.
+    int numSplits = dataset->getNumSplits();
+    printf("splits number: %u\n", numSplits);
     printf("dataset size: %u\n", (unsigned int)dataset->getTrain().size());
+
     OR_sunObj *example = static_cast<OR_sunObj *>(dataset->getTrain().back().get());
-    printf("last object name: %s\n", example->name.c_str());
-    printf("last object images number: %u\n", (unsigned int)example->imageNames.size());
-    vector<string> &imageNames = example->imageNames;
-    for (vector<string>::iterator it=imageNames.begin(); it!=imageNames.end(); ++it)
-    {
-        printf("%s\n", (*it).c_str());
-    }
+    printf("last image:\nname: %s\n", example->name.c_str());
+    printf("label: %u\n", example->label);
+    printf("label path: %s\n", dataset->paths[example->label].c_str());
 
     return 0;
 }

modules/datasets/src/or_sun.cpp

@@ -43,6 +43,8 @@
 #include "opencv2/datasets/util.hpp"
 #include "precomp.hpp"
 
+#include <map>
+
 namespace cv
 {
 namespace datasets
@@ -61,6 +63,10 @@ public:
 
 private:
     void loadDataset(const string &path);
+
+    void loadDatasetPart(const string &path, vector< Ptr<Object> > &dataset_);
+
+    map<string, int> pathLabel;
 };
 
 /*OR_sunImp::OR_sunImp(const string &path)
@@ -73,13 +79,40 @@ void OR_sunImp::load(const string &path)
     loadDataset(path);
 }
 
-void OR_sunImp::loadDataset(const string &path)
+void OR_sunImp::loadDatasetPart(const string &path, vector< Ptr<Object> > &dataset_)
 {
-    train.push_back(vector< Ptr<Object> >());
-    test.push_back(vector< Ptr<Object> >());
-    validation.push_back(vector< Ptr<Object> >());
+    string line;
+    ifstream infile(path.c_str());
+    while (getline(infile, line))
+    {
+        Ptr<OR_sunObj> curr(new OR_sunObj);
+        curr->label = 397;
+        curr->name = line;
+
+        size_t pos = curr->name.rfind('/');
+        if (pos != string::npos)
+        {
+            string labelStr(curr->name.substr(0, pos+1));
+            map<string, int>::iterator it = pathLabel.find(labelStr);
+            if (it != pathLabel.end())
+            {
+                curr->label = (*it).second;
+            } else
+            {
+                curr->label = pathLabel.size();
+                pathLabel.insert(make_pair(labelStr, curr->label));
+                paths.push_back(labelStr);
+            }
+            curr->name = curr->name.substr(pos+1);
+        }
 
-    string classNameFile(path + "ClassName.txt");
+        dataset_.push_back(curr);
+    }
+}
+
+void OR_sunImp::loadDataset(const string &path)
+{
+    /*string classNameFile(path + "ClassName.txt");
     ifstream infile(classNameFile.c_str());
     string line;
     while (getline(infile, line))
@@ -96,6 +129,29 @@ void OR_sunImp::loadDataset(const string &path)
         }
 
         train.back().push_back(curr);
+    }*/
+
+    for (unsigned int i=1; i<=10; ++i)
+    {
+        char tmp[3];
+        sprintf(tmp, "%u", i);
+        string numStr;
+        if (i<10)
+        {
+            numStr = string("0") + string(tmp);
+        } else
+        {
+            numStr = tmp;
+        }
+        string trainFile(path + "Partitions/Training_" + numStr + ".txt");
+        string testFile(path + "Partitions/Testing_" + numStr + ".txt");
+
+        train.push_back(vector< Ptr<Object> >());
+        test.push_back(vector< Ptr<Object> >());
+        validation.push_back(vector< Ptr<Object> >());
+
+        loadDatasetPart(trainFile, train.back());
+        loadDatasetPart(testFile, test.back());
     }
 }