[Insight-users] Question about the BinaryDilated and Binary image in general.

[Saurabh Garg]

What PixelType are you using? Your PixelType must be char (1 byte). '0 as
bg and 1 as fg' will work (without specifying the DilateValue) only if your
PixelType is 1 bit long.

Saurabh

On Tue, Oct 2, 2012 at 12:23 PM, Ariel Hernán Curiale <curiale at gmail.com>wrote:

> Ok, then I don't know why I need to Rescale the intensity to 255 to get a
> properly output. When I use the default value (o background and 1
> foreground) the dilate doesn't work.
>
>
> Thanks,
> __________________________________
> | Ariel Hernán Curiale Ph.D Student
> | ETSI Telecomunicación
> | Universidad de Valladolid
> | Campus Miguel Delibes
> | 47011 Valladolid, Spain
> | Phone: 983-423000 ext. 5590
> | Web: www.curiale.com.ar
> |_________________________________
>
> El 02/10/2012, a las 20:22, Saurabh Garg escribió:
>
> Hi Ariel,
>
> It is an option in case your foreground value is different than default.
> DilateValue defaults to the maximum possible value of the PixelType.
>
> HTH,
> Saurabh
>
> On Tue, Oct 2, 2012 at 11:12 AM, Ariel Hernán Curiale <curiale at gmail.com>wrote:
>
>> Hi Saurabh,
>>
>> I can use SetDilateValue or I must use it ?
>> Because I saw this information but I assume that by default all pixel >0
>> are treated like one. And in the wiki (
>> http://www.itk.org/Wiki/ITK/Examples/Morphology/BinaryDilateImageFilter)
>> they don't use SetDilateValue because the image is binary.
>>
>>
>>      Thanks,
>> __________________________________
>> | Ariel Hernán Curiale Ph.D Student
>> | ETSI Telecomunicación
>> | Universidad de Valladolid
>> | Campus Miguel Delibes
>> | 47011 Valladolid, Spain
>> | Phone: 983-423000 ext. 5590
>> | Web: www.curiale.com.ar
>> |_________________________________
>>
>> El 02/10/2012, a las 20:02, Saurabh Garg escribió:
>>
>> Hi Ariel,
>>
>> You can use "SetDilateValue" to tell the Binary dilate filter, the value
>> of your foreground pixel.
>>
>> HTH,
>> Saurabh
>>
>> On Tue, Oct 2, 2012 at 9:53 AM, Ariel Hernán Curiale <curiale at gmail.com>wrote:
>>
>>> Hi,
>>>
>>> I'm trying to implement a BinaryDilate over a mask image (0 and 1) and
>>> after read the class api I was sure that I will could do it :) but after a
>>> while the the dilate filter always return the same image as input.
>>> Reading the itkSoftwareGuide I found to my surprise that the input of
>>> the dilated image (in the example of the page 174) was  0 for the
>>> background and 255 for non-background. I did this change using a
>>> RescaleIntensityImage and the dilate filter work properly.
>>>
>>> Anyone knows What is exactly the values of intensity that I need to use
>>> when in ITK  say binary image ?
>>> In the api say that "The structuring element is assumed to be composed
>>> of binary values (zero or one)", Why didn't  work the dilate using a binary
>>> image ?
>>>
>>>
>>>    Thanks,
>>> __________________________________
>>> | Ariel Hernán Curiale Ph.D Student
>>> | ETSI Telecomunicación
>>> | Universidad de Valladolid
>>> | Campus Miguel Delibes
>>> | 47011 Valladolid, Spain
>>> | Phone: 983-423000 ext. 5590
>>> | Web: www.curiale.com.ar
>>> |_________________________________
>>>
>>>
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>>
>>
>
>
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