<div>aha i see...</div>
<div>Yes, of course i know this is simple, but starting simple is always the way to go :)</div>
<div> </div>
<div>I think maybe you have misunderstood what i want to do. I dont want to make a RGB image, i just want to combine 3 different binary mask images into a single grayscale mask image with values 0,1,2,3 (0=background, 1=gm, 2=wm,3=wm)
</div>
<div>If i just manage this i can port it to vtk no problem.</div>
<div>So i just wanted to create a composite filter to do this for me.</div>
<div>Do you see what i mean?</div>
<div> </div>
<div>Many regards :)<br> </div><br><br>
<div><span class="gmail_quote">2006/10/17, Gaëtan Lehmann <<a href="mailto:gaetan.lehmann@jouy.inra.fr">gaetan.lehmann@jouy.inra.fr</a>>:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>Hi,<br><br>Most of the time, the simple manipulation like this one can already be<br>done in ITK or VTK, so you shouldn't have to create a new filter to do
<br>that :-)<br>However, we are always pleased to see someone motivated to develop some<br>new features for the toolkit, especially if he/she want to contribute that<br>code to the community. I'm pretty sure you'll find something useful to
<br>code soon :-)<br><br>To combine your 3 images, you can use ComposeRGBImageFilter (1), which<br>takes 3 input images and give you a RGB image.<br>However, I'm not sure you can pass the rgb image directly to vtk (perhaps
<br>something to code :-)). You'll have to pass the 3 binary images in vtk<br>with ImageToVTKImageFilter, and compose the color image in vtk.<br><br>Gaetan<br><br>(1) <a href="http://www.itk.org/Doxygen/html/classitk_1_1ComposeRGBImageFilter.html">
http://www.itk.org/Doxygen/html/classitk_1_1ComposeRGBImageFilter.html</a><br><br><br><br>Le Tue, 17 Oct 2006 19:56:04 +0200, Prename Surname<br><<a href="mailto:bsd.diverse@gmail.com">bsd.diverse@gmail.com</a>> a écrit:
<br><br>> Hello.<br>> I am beginning to feel a bit more at home in itk/vtk now. There are<br>> still a<br>> zillion things to learn about it, but its getting a bit better. So now i<br>> have decided that i want to try and make my own filter to get more
<br>> acquainted with the whole pipeline approach.<br>><br>> I have read chapter 13 in the itksoftwareguide, and i have thought about<br>> a<br>> approach to make my filter. I was hoping some of you experts would tell
<br>> me<br>> if i am completely off, or if my idea is okay.<br>> My situation is this:<br>> I have a greyscale volume consisting of 182 slices that are 182x218<br>> pixels<br>> of a brain.<br>> I have a mask of corresponding size with values 0 and 255 for the
<br>> positions<br>> of greymatter<br>> I have a mask of corresponding size with values 0 and 255 for the<br>> positions<br>> of whitematter<br>> I have a mask of corresponding size with values 0 and 255 for the
<br>> positions<br>> of CSF(brainfluid)<br>><br>> Basically i want my filter to combine the 3 masks to a single image, so<br>> that<br>> i can visualize this image in vtk with different colors for greymatter,
<br>> whitematter and CSF.<br>><br>><br>> Making a filter (lets call it masking)that subclasses ImageToImageFilter,<br>> and then takes 2 input images and somehow combining them to a single<br>> image<br>
> by just adding them together.<br>><br>> I then want to make a compositefilter that actually makes a pipeline of 2<br>> masking filters, taking first 2 masks, combining them in the masking<br>> filter,<br>
> takes the output of this and combine it with the third mask using again<br>> the<br>> masking filter, and then outputting the final masked image.<br>><br>> Does this sound feasible, and more important is this a good approach?
<br>> I hope for some feedback.<br>><br>> Many regards and thank you<br><br><br><br>--<br>Gaëtan Lehmann<br>Biologie du Développement et de la Reproduction<br>INRA de Jouy-en-Josas (France)<br>tel: +33 1 34 65 29 66 fax: 01 34 65 29 09
<br><a href="http://voxel.jouy.inra.fr">http://voxel.jouy.inra.fr</a><br></blockquote></div><br>