Slicer3:Module:BinaryDilateOperations-Documentation - Revision history

Bikekilic: /* Screen shots */

2008-08-28T18:33:38Z

Screen shots

Bikekilic: /* Dependencies */

2008-08-28T18:31:22Z

Dependencies

Bikekilic: /* Quick Tour of Features and Use */

2008-08-28T18:30:57Z

Quick Tour of Features and Use

Bikekilic: /* Module Description */

2008-08-28T18:30:13Z

Module Description

Bikekilic at 18:29, 28 August 2008

2008-08-28T18:29:38Z

Bikekilic: /* Screen shots */

2008-08-28T16:01:18Z

Screen shots

Bikekilic: /* Screen shots */

2008-08-28T15:56:28Z

Screen shots

Bikekilic: /* Screen shots */

2008-08-28T15:56:06Z

Screen shots

Bikekilic: /* Screen shots */

2008-08-28T15:06:29Z

Screen shots

Bikekilic: /* The Problems */

2008-08-28T15:00:55Z

The Problems

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 Although the above figure shows three steps in dilation, it took 7 steps in order to make them be closer to each other. The neighborhood structuring element with radius 2 was used in dilation process.
 In the second figure, the dilation result with ball structuring element which has the radius 5 can be seen. In comparison to the previous case, it took 5 steps in order to get the last dilated image.
-The third figure shows the dilation result with cross structuring element whose radius is 10. After 25 iterations I get the last dilated image. In the case of using cross structuring element,the shape of the image is damaged more than the dilation with neighborhood and ball structuring elements.
+The third figure shows the dilation result with cross structuring element whose radius is 10. After 25 iterations I get the last dilated image. In this screen shots, we see the first, the 25th and the last dilated image. In the case of using cross structuring element,the shape of the image is damaged more than the dilation with neighborhood and ball structuring elements.
 ==MORE INFORMATION==

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 ===Dependencies===
-The BinaryDilateOperations Module uses four ITK classes. One of them is for binary erosion, which is called itkBinaryDilateImageFilter [http://www.itk.org/Doxygen/html/classitk_1_1BinaryDilateImageFilter.html]. Three of ITK classes which are included are used to create structuring elements. For ball structuring element, itkBinaryBallStructuringElement[http://www.itk.org/Doxygen/html/classitk_1_1BinaryBallStructuringElement.html]; for cross structuring element itkBinaryCrossStructuringElement[http://www.itk.org/Doxygen/html/classitk_1_1BinaryCrossStructuringElement.html] and for neighborhood structuring element itkNeighborhood[http://www.itk.org/Doxygen/html/classitk_1_1Neighborhood.html] are added.
+The BinaryDilateOperations Module uses four ITK classes. One of them is for binary dilation, which is called itkBinaryDilateImageFilter [http://www.itk.org/Doxygen/html/classitk_1_1BinaryDilateImageFilter.html]. Three of ITK classes which are included are used to create structuring elements. For ball structuring element, itkBinaryBallStructuringElement[http://www.itk.org/Doxygen/html/classitk_1_1BinaryBallStructuringElement.html]; for cross structuring element itkBinaryCrossStructuringElement[http://www.itk.org/Doxygen/html/classitk_1_1BinaryCrossStructuringElement.html] and for neighborhood structuring element itkNeighborhood[http://www.itk.org/Doxygen/html/classitk_1_1Neighborhood.html] are added.
 In this project, for dilation the neighborhood structuring element has been chosen.
 ===The Problems===

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 {|
-|[[Image:GUIPanelDilate.PNG|thumb|280px|The GUI panel for BinaryDilateOperations Module after binary erosion]]
+|[[Image:GUIPanelDilate.PNG|thumb|280px|The GUI panel for BinaryDilateOperations Module after binary dilation]]
 |}

@@ Line 21: / Line 21: @@
 ===Module Description===
-This module aims to perform erosion method in order to make two different labeled separate objects closer to each other after erosion. At the end, we want to see these objects touched but not overwritten.
+This module aims to perform dilation method in order to make two different labeled separate objects closer to each other after erosion. At the end, we want to see these objects touched but not overwritten.
 This method uses a structuring element in order to cover the object border with given foreground value. It grows the object with this structuring element. For this project, the structuring element is neighborhood structuring element with a radius size which is defined by the user.
@@ Line 27: / Line 27: @@
 For example, the results given in ''Screen shots'' part, the structuring element is neighborhood structuring element with radius 2. It took 7 iterations in order to get closer images with different colors.
 The input of this module is the output of BinaryErodeOperations module at the beginning. For the following iterations, the input is the dilated binary image from the previous iteration.
 ==USAGE==

← Older revision		Revision as of 18:29, 28 August 2008
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		+	[[Documentation\|Return to Slicer Documentation]]
		+
	==Binary Dilate Operations==		==Binary Dilate Operations==

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 {|
 |[[Image:Dilate.png|thumb|280px|Binary Dilate Iterations with Neighborhood structuring element with radius 2]]
-|[[Image:DilateWithBall.png|thumb|280px|Binary Dilate with Ball Structuring element with radius 5]]
+|[[Image:DilateWithBall.png|thumb|400px|Binary Dilate with Ball Structuring element with radius 5]]
-|[[Image:DilateCross.png|thumb|300px|Binary Dilate with Cross Structuring element whose radius is 10]]
+|[[Image:DilateCross.png|thumb|400px|Binary Dilate with Cross Structuring element whose radius is 10]]
 |}

← Older revision		Revision as of 15:06, 28 August 2008
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	Although the above figure shows three steps in dilation, it took 7 steps in order to make them be closer to each other. The neighborhood structuring element with radius 2 was used in dilation process.		Although the above figure shows three steps in dilation, it took 7 steps in order to make them be closer to each other. The neighborhood structuring element with radius 2 was used in dilation process.
		+	In the second figure, the dilation result with ball structuring element which has the radius 5 can be seen. In comparison to the previous case, it took 5 steps in order to get the last dilated image.
		+	The third figure shows the dilation result with cross structuring element whose radius is 10. After

	==MORE INFORMATION==		==MORE INFORMATION==

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 In this module, the problems were stemmed from the choices of structuring element, the radius size of them. The performance of dilation depends on the properties of structuring element. The reason is that sometimes the shape of the binary image can not be preserved after dilation. For instance, the spheres data I used became had like a square shape if I used other structuring elements instead of neighborhood structuring element. Therefore, neighborhood structuring element was used in BinaryDilateOperations Module. However, if user wants to try others, the default value for structuring element should be changed from the code file. I could not also do it interactive.
-Another problem which was encountered with is stemmed from being unable to use labeled images in dilation. Since the binary images are used in dilation, after more than 7 iterations, the spheres become overwritten again and so they can not be labeled differently at the end of the dilation. Therefore, I lose the connectedness information between spheres which makes me unable to differentiate the different objects.
+Another problem which was encountered with is stemmed from being unable to use labeled images in dilation. Since the binary images are used in dilation, after more than 7 iterations, the spheres become overwritten again and so they can not be labeled differently at the end of the dilation if I use Editor module. Therefore, I lose the connectedness information between spheres which makes me unable to differentiate the different objects. However, even they become overwritten, the labels remain the same as I had after performing LabelBinaryImages module on the last eroded image( background is labeled as 0, the first sphere is labeled as 1 and the second one is labeled as 2).
 ===Screen shots===