diff --git a/src/src/IO/DICOM/DICOMHeaderHelper.cpp b/src/src/IO/DICOM/DICOMHeaderHelper.cpp
index d7ea9ad..a2e0aed 100644
--- a/src/src/IO/DICOM/DICOMHeaderHelper.cpp
+++ b/src/src/IO/DICOM/DICOMHeaderHelper.cpp
@@ -441,24 +441,31 @@ void DICOMHeaderHelper::ArrangeSeriesProperty() {
             }
         }
         //sort every image set
+        int imageSetNumber = 0;
         int beginOffset = 0;
         for (int j = 0; j < splitIndex.size(); ++j) {
-            std::sort(item.second.begin()+beginOffset,item.second.begin()+splitIndex[j],
-            [](auto v1,auto v2){
-                return v1.image_position<v2.image_position;
-            });
-            auto p = createProperty(item.second, splitIndex[j], beginOffset);
-            if (p)seriesProperties.push_back(p);
-            beginOffset = splitIndex[j];
-        }
-        //sort the last image set
-            std::sort(item.second.begin() + beginOffset, item.second.end(),
+            std::sort(item.second.begin() + beginOffset, item.second.begin() + splitIndex[j],
                       [](auto v1, auto v2) {
                           return v1.image_position < v2.image_position;
                       });
-            auto p = createProperty(item.second, item.second.size(), beginOffset);
+            auto p = createProperty(item.second, splitIndex[j], beginOffset);
+            p->SetImageSetNumber(imageSetNumber);
+            p->GenerateUniqueID();
             if (p)seriesProperties.push_back(p);
-
+            beginOffset = splitIndex[j];
+            imageSetNumber++;
+        }
+        printf("first file:%s",item.second[0].FilePath.c_str());
+        //sort the last image set
+        std::sort(item.second.begin() + beginOffset, item.second.end(),
+                  [](auto v1, auto v2) {
+                      return v1.image_position < v2.image_position;
+                  });
+//        printf("new first file:%s\r\n",item.second[0].FilePath.c_str());
+        auto p = createProperty(item.second, item.second.size(), beginOffset);
+        p->SetImageSetNumber(imageSetNumber);
+        p->GenerateUniqueID();
+        if (p)seriesProperties.push_back(p);
     }
 }
 
@@ -524,6 +531,8 @@ ExtendMedicalImageProperties* DICOMHeaderHelper::createProperty(const std::vecto
         property->SetRescaleOffset(RescaleOffset);
         property->SetBitsAllocated(bitsAllocated);
         property->SetPixelRepresentation(PixelRepresentation);
+        property->SetDirectionCosine((double*)header.Orientation);
+        property->ComputeTransformMatrix();
     }
     else{
         printf( " file:%s  load error!\r\b", header.FilePath.c_str() );
diff --git a/src/src/IO/DICOM/DICOMHeaderHelper.h b/src/src/IO/DICOM/DICOMHeaderHelper.h
index a317285..fa50439 100644
--- a/src/src/IO/DICOM/DICOMHeaderHelper.h
+++ b/src/src/IO/DICOM/DICOMHeaderHelper.h
@@ -42,9 +42,9 @@ struct DICOMFileHeader {
         normal[0] = (Orientation[1] * Orientation[5]) - (Orientation[2] * Orientation[4]);
         normal[1] = (Orientation[2] * Orientation[3]) - (Orientation[0] * Orientation[5]);
         normal[2] = (Orientation[0] * Orientation[4]) - (Orientation[1] * Orientation[3]);
-        image_position = (normal[0] * Orientation[0])
-                         + (normal[1] * Orientation[1])
-                         + (normal[2] * Orientation[2]);
+        image_position = (normal[0] * Position[0])
+                         + (normal[1] * Position[1])
+                         + (normal[2] * Position[2]);
     }
 };
 
diff --git a/src/src/IO/DICOM/ExtendMedicalImageProperties.cpp b/src/src/IO/DICOM/ExtendMedicalImageProperties.cpp
index 545a62e..204c150 100644
--- a/src/src/IO/DICOM/ExtendMedicalImageProperties.cpp
+++ b/src/src/IO/DICOM/ExtendMedicalImageProperties.cpp
@@ -84,3 +84,25 @@ bool ExtendMedicalImageProperties::RescaledImageDataIsSigned()
     return (rescaleSigned || pixelRepSigned || offsetSigned);
 }
 
+void ExtendMedicalImageProperties::GenerateUniqueID() {
+    std::string uniqueID;
+    uniqueID.append(PatientName);
+    uniqueID.append("_");
+    uniqueID.append(StudyUID);
+    uniqueID.append("_");
+    uniqueID.append(SeriesUID);
+    uniqueID.append("_");
+    char img[200]={0};
+    sprintf(img,"%ld", ImageSetNumber);
+    uniqueID.append(img);
+    this->SetUniqueID(uniqueID.c_str());
+}
+
+bool ExtendMedicalImageProperties::RescaledImageDataIsUnsignedChar() {
+    bool charData = BitsAllocated == 8;
+    bool noScale = ((int)(this->RescaleOffset) == 0) && ((int)(this->RescaleSlope) == 1);
+    bool unSign =  (this->PixelRepresentation == 0);
+    bool color = SamplePerPixel == 3;
+    return (color || (charData && unSign && noScale));
+}
+
diff --git a/src/src/IO/DICOM/ExtendMedicalImageProperties.h b/src/src/IO/DICOM/ExtendMedicalImageProperties.h
index 9fa1124..825b2cf 100644
--- a/src/src/IO/DICOM/ExtendMedicalImageProperties.h
+++ b/src/src/IO/DICOM/ExtendMedicalImageProperties.h
@@ -30,6 +30,9 @@ public:
     vtkGetMacro(AcquisitionNumber, long)
     vtkSetMacro(AcquisitionNumber, long)
 
+    vtkGetMacro(ImageSetNumber, long)
+    vtkSetMacro(ImageSetNumber, long)
+
     vtkGetMacro(Rows, long)
     vtkSetMacro(Rows, long)
 
@@ -66,9 +69,6 @@ public:
     void SetFileNames(std::vector<std::string>& files){
         FileNames = std::move(files);
     }
-    void SetSplitIndex(std::vector<int>& index){
-        SplitIndex = std::move(index);
-    }
 
     long GetSeriesNumberAsLong(){
         if (this->SeriesNumber){
@@ -97,6 +97,8 @@ public:
     void SetUniqueID(const std::string& id){
         uniqueID = id;
     }
+    void GenerateUniqueID();
+
     vtkMatrix4x4* GetOrientationMatrix(){
         return OrientationMatrix.Get();
     }
@@ -123,13 +125,13 @@ protected:
     double RescaleSlope = .0;
     double RescaleOffset = .0;
     long AcquisitionNumber = 0;
+    long ImageSetNumber = 0;
     long Rows = 0;
     long Columns = 0;
     unsigned short SamplePerPixel;
     unsigned short BitsAllocated;
     unsigned short PixelRepresentation;
     std::vector<std::string> FileNames;
-    std::vector<int> SplitIndex;
     std::string uniqueID;
     vtkNew<vtkMatrix4x4> OrientationMatrix;
     vtkNew<vtkMatrix4x4> WorldToModelMatrix;