<font><font face="verdana,sans-serif">You should do an XOR of image with the mask and you will get regular binary image which you can supply to marching cubes.</font></font><div class="gmail_extra"><br><br><div class="gmail_quote">
On Fri, Nov 9, 2012 at 3:00 PM, wydesenej <span dir="ltr"><<a href="mailto:wydesenej@gmail.com" target="_blank">wydesenej@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">Hi.<br>
<br>
I have very specific image to describe structures in other image.<br>
Scalar value of each pixel consits of N-bits.<br>
Each bit represents some structure in image.<br>
<br>
Some examples:<br>
Pixel value = 11010000 -> means that this pixel is in stuctures 1, 2 and 4<br>
Pixel value = 01010000 -> means that this pixel is in stuctures 2 and 4<br>
Pixel value = 00001000 -> means that this pixel is in stucture 5<br>
Pixel value = 00000000 -> means that this pixel is not in any structure<br>
etc..<br>
<br>
Now I need to find contours of these structures.<br>
</div>I need to use some contour filter. Problem is that filters uses as input<br>
<div class="im">scalar value for contour but i want to set "mask value".<br>
<br>
Example what i need:<br>
<br>
</div>someFilter filter;<br>
<div class="im">filter->SetInput( mySpecialBinaryImage );<br>
filter->SetValueMask( 00100000 ); -> This function is not presented in<br>
filter. I want that this means: contour for me structure num3 ie. contour<br>
pixels with bit3 == 1.<br>
filter->Update();<br>
filter->GetOutput(); -> There i get my countour. (if image is 2d i got<br>
polygon if 3d i got surface...)<br>
<br>
Please any ideas how to do this stuff?<br>
<br>
<br>
<br>
<br>
--<br>
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