diff --git a/vtk/src/layers/BackgroundImage.cpp b/vtk/src/layers/BackgroundImage.cpp
index e6da7b5..6aa63f6 100644
--- a/vtk/src/layers/BackgroundImage.cpp
+++ b/vtk/src/layers/BackgroundImage.cpp
@@ -3,7 +3,9 @@
 #include <vtkCamera.h>
 #include <vtkImageActor.h>
 #include <vtkImageData.h>
+#include <vtkImageMapper3D.h>
 #include <vtkImageReader2.h>
+#include <vtkImageShiftScale.h>
 #include <vtkMatrix4x4.h>
 #include <vtkTransform.h>
 #include <vtkTransformFilter.h>
@@ -17,6 +19,24 @@ BackgroundImage::BackgroundImage(string imagePath) : imagePath(imagePath) {
   updateImage();
 }
 
+vtkSmartPointer<vtkMatrix4x4> getMatrix() {
+    const double XMin = 0;
+    const double XMax = 661;
+    const double YMin = 0;
+    const double YMax = 661;
+
+    double eyeTransform[] = {
+            2/(XMax-XMin), 0, 0, -(XMax+XMin)/(XMax-XMin),
+            0, 2/(YMax-YMin), 0, -(YMax+YMin)/(YMax-YMin),
+            0, 0, 1, 0,
+            0, 0, 0, 1
+    };
+
+    auto matrix = vtkSmartPointer<vtkMatrix4x4>::New();
+    matrix->DeepCopy(eyeTransform);
+    return matrix;
+}
+
 
 void BackgroundImage::updateImage() {
 
@@ -26,16 +46,16 @@ void BackgroundImage::updateImage() {
   imageReader->SetFileName(this->imagePath.c_str());
   imageReader->Update();
 
-  // TODO: transform the iamge to the range [-1,1] and center it on (0,0)
+  vtkNew<vtkImageChangeInformation> imageCenterer;
+  imageCenterer->SetInputConnection(imageReader->GetOutputPort());
+  imageCenterer->CenterImageOn();
+  imageCenterer->Update();
+
+  vtkSmartPointer<vtkImageData> imageData = imageCenterer->GetOutput();
+
+  // TODO: transform the iamge to the range [-1,1]
   // This will allow the backgorundImage to share a camera with our other layers.
   // Facilitating the cameraMovement callback.
-  vtkNew<vtkImageChangeInformation> changeInformation;
-  changeInformation->SetInputConnection(imageReader->GetOutputPort());
-  changeInformation->CenterImageOn();
-  changeInformation->Update();
-
-  vtkSmartPointer<vtkImageData> imageData = changeInformation->GetOutput();
-  
   vtkNew<vtkImageActor> imageActor;
   imageActor->SetInputData(imageData);
 
@@ -51,10 +71,10 @@ void BackgroundImage::updateImage() {
   imageData->GetSpacing(spacing);
   imageData->GetExtent(extent);
 
-  // printf("%lf, %lf, %lf\n", origin[0], origin[1], origin[2]);
-  // printf("%lf, %lf, %lf\n", spacing[0], spacing[1], spacing[2]);
-  // printf("%d, %d, %d, ", extent[0], extent[1], extent[2]);
-  // printf("%d, %d, %d\n", extent[3], extent[4], extent[5]);
+  printf("%lf, %lf, %lf\n", origin[0], origin[1], origin[2]);
+  printf("%lf, %lf, %lf\n", spacing[0], spacing[1], spacing[2]);
+  printf("%d, %d, %d, ", extent[0], extent[1], extent[2]);
+  printf("%d, %d, %d\n", extent[3], extent[4], extent[5]);
 
   vtkCamera *camera = this->ren->GetActiveCamera();
   camera->ParallelProjectionOn();
@@ -63,9 +83,9 @@ void BackgroundImage::updateImage() {
   double yc = origin[1] + 0.5 * (extent[2] + extent[3]) * spacing[1];
   double yd = (extent[3] - extent[2] + 1) * spacing[1];
 
-  // printf("%lf, %lf, %lf\n", xc, yc, yd);
+  printf("%lf, %lf, %lf\n", xc, yc, yd);
 
-  camera->SetParallelScale(0.5 * yd); // sets to 330; should be 1 -> resize image.
+  camera->SetParallelScale(0.5 * yd); // sets to 330; should be 1 ->  transform
   camera->SetFocalPoint(xc, yc, 0.0); // sets to 0,0,0; isnice
   camera->SetPosition(xc, yc, 1000); // sets to 0,0,1000; isnice
 }