[Insight-users] (no subject)

[Luis Ibanez]

Hi John,

1) Yes, in the case of the PNG file format
     you have to read the entire image.

     For some other formats you could take
     advantage of streaming, and read only
     a block of the image.

2)   You essentially need this example:

http://www.itk.org/Wiki/ITK/Examples/Inspection/PixelInspection


    Luis


-----------------------------------------
On Wed, Feb 16, 2011 at 1:21 PM, john smith <mkitkinsightuser at gmail.com> wrote:
> I have a .png image file in the source directory and I want to get the data
> of one pixel of the image and see the results on the Command Window (if it
> is possible) or on another file (such as a .txt file) . Firstly, I am
> wondering if it is necessary to read the hole Image by using a
> ImageFileReader, or I can get the data I want just with the using of
> itkIndex.
>
> 2011/2/16 David Doria <daviddoria at gmail.com>
>>
>> On Wed, Feb 16, 2011 at 12:50 PM, john smith <mkitkinsightuser at gmail.com>
>> wrote:
>>>
>>> Hello,
>>>
>>> I am beginner in using itk and I am trying to get the pixel value of a 2D
>>> image. As a first step, I am trying to create my own image object, to
>>> initialize and allocate the image region, and finally using the itkIndex to
>>> get and set a pixel value (knowing that is not the fastest method). I have
>>> written the following code, which is correctly built using VisualStudio2010
>>> and Cmake. But when I run the .exe file with the Command Prompt window, I
>>> don't get any result on my screen. Could somebody tell me what to do to get
>>> some results?
>>> In the second step, I would like to set the filename of the image myself,
>>> using the Command Prompt window. Could somebody tell me what to change in my
>>> code, not only in the .cxx file but also in thr CMakeLists.txt?
>>>
>>> Thanks in advance
>>>