Correction bug LargestPossibleRegion -> RequestedRegion

Code/FeatureExtraction/otbTouziEdgeDetectorImageFilter.txx

@@ -91,16 +91,16 @@ void TouziEdgeDetectorImageFilter<TInputImage, TOutputImage, TOutputImageDirecti
     throw e;
     }
 }
-
-/**
- * Set up state of filter before multi-threading.
- * InterpolatorType::SetInputImage is not thread-safe and hence
+
+/**
+ * Set up state of filter before multi-threading.
+ * InterpolatorType::SetInputImage is not thread-safe and hence
  * has to be set up before ThreadedGenerateData
- */
+ */
 template <class TInputImage, class TOutputImage, class TOutputImageDirection >
 void 
 TouziEdgeDetectorImageFilter<TInputImage, TOutputImage, TOutputImageDirection>
-::BeforeThreadedGenerateData()
+::BeforeThreadedGenerateData()
 {
 
   typename OutputImageDirectionType::RegionType region;    
@@ -108,13 +108,12 @@ TouziEdgeDetectorImageFilter<TInputImage, TOutputImage, TOutputImageDirection>
 
   OutputImageDirectionType * direction = this->GetOutputDirection();
 
-  region.SetSize(output->GetLargestPossibleRegion().GetSize());
-  region.SetIndex(output->GetLargestPossibleRegion().GetIndex());
+  region.SetSize(output->GetRequestedRegion().GetSize());
+  region.SetIndex(output->GetRequestedRegion().GetIndex());
   direction->SetRegions( region );
   direction->SetOrigin(output->GetOrigin());
   direction->SetSpacing(output->GetSpacing());
   direction->Allocate();
-
 }
 
 template <class TInputImage, class TOutputImage, class TOutputImageDirection >