[vtk-developers] vtkLoopSubdivisionFilter

[Bill Lorensen]

Laurent,

A reminder that the Loop Subdivision is approximating, not interpolating.
For an interpolating subdivision you should use Butterfly Subdivision.

It's good to see that someone at the Brigham is using this, since it was
developed under Ron's NAC P41 grant:  P41 RR13218-01 (albeit over 10 years
ago).

Bill

On Mon, Oct 31, 2011 at 9:43 AM, Laurent Chauvin
<lchauvin at bwh.harvard.edu>wrote:

> Thank you very much, it works really well.
>
> Thank you.
> -Laurent
>
>
> On Sun, Oct 30, 2011 at 1:48 PM, Laurent Chauvin <lchauvin at bwh.harvard.edu
> > wrote:
>
>> Ok, I will try this.
>>
>> Than you very much.
>> -Laurent
>>
>>
>> On Sun, Oct 30, 2011 at 11:39 AM, Bill Lorensen <bill.lorensen at gmail.com>wrote:
>>
>>> LoopSubdivision will increase the size of a model by a factor of 4 for
>>> each iteration. As David suggests later in this thread, run your data
>>> through CleanPolydata before doing the subdivision.
>>>
>>>
>>> On Fri, Oct 28, 2011 at 4:10 PM, Laurent Chauvin <
>>> lchauvin at bwh.harvard.edu> wrote:
>>>
>>>>  Hello,
>>>>
>>>> I am using the vtkLoopSubdivisionFilter to reduce size of a model.
>>>> However, I noticed when running my code from terminal, this filter was
>>>> producing a lot of numCellsInLoop < 1:0 warnings.
>>>> I have been in the souce code, and just commented the warning. And
>>>> after reexecuting the code, I have noticed that the filter was applied 20
>>>> times faster.
>>>>
>>>> However, I don't really like to comment vtk source code, because I
>>>> cannot really submit it. I would like to know if someone has idea to avoid
>>>> this warning (which seems to really increase the execution time) ?
>>>>
>>>> Thank you very much.
>>>> -Laurent
>>>>
>>>> --
>>>> Laurent Chauvin, MS
>>>> Surgical Planning Laboratory, Radiology
>>>> Brigham And Women's Hospital, Harvard Medical School
>>>> http://wiki.ncigt.org/index.php/User:Lchauvin
>>>>
>>>>
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>>>>
>>>
>>
>>
>> --
>> Laurent Chauvin, MS
>> Surgical Planning Laboratory, Radiology
>> Brigham And Women's Hospital, Harvard Medical School
>> http://wiki.ncigt.org/index.php/User:Lchauvin
>>
>>
>
>
> --
> Laurent Chauvin, MS
> Surgical Planning Laboratory, Radiology
> Brigham And Women's Hospital, Harvard Medical School
> http://wiki.ncigt.org/index.php/User:Lchauvin
>
>
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