[Sidefx-houdini-list] Motion blur errors

Ihab Razek ihab.razek at gmail.com
Wed Apr 4 12:43:52 EDT 2007


thanks ben.
On Apr 4, 2007, at 6:17 PM, Ben Schrijvers wrote:

> The reason for both Trail Sop and deformation blur to fail is  
> because like you say the geometry is changing every frame.
> This is mainly because of the "disappear". A solution would be to  
> make the tiles disappear *after* the Trail Sop.
> Keeping the geometry might be to heavy but it sounds like a simple  
> solution.
>
> cheers,
> benS
>
>
> Ihab Razek wrote:
>
>> I'm doing an animation of floor tiles so that each tile folds on  
>> the one next to it and then disappears and so on.
>> I can't use deformation motion blur because the geometry changes  
>> every frame.
>> When i use a trail sop to compute velocity and then enable  
>> velocity attribute motion blur, i get a weird blurring all over  
>> the image.
>> My guess is that the the velocity vectors are messed up because i  
>> copy the row of tiles multiple times to cover the floor.
>> I tried adding the trail sop before and after the copy operation  
>> but still i get blurring all over the image.
>> Any suggestions?
>>
>> thanks in advance,
>>
>> ihab
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>
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