Spark Motion Blur user interface
The first version of Spark motion blur node we are improving is almoust finished.
This node calculates objects’ movement between two frames,
creating subframes or slices (as we called it).
Now we are running several tests to check the effectiveness of this node and we are working on the user interface.
This is how the node currently looks.
As you can see the inputs are image (a rgba channel), Z and speed. The outputs are image and Z.
Max Displace sets the maximum distance that moving pixels are allowed to do in a single slice. This allows us to define how many slices we will use to calculate the motion blur’s trail.
Using Max Slices, we can decide the maximum number of slices to take into consideration, in order to avoid making the rendering time too long.
For a best visual result we can increase the Oversampling. The node will calculate the trial scaling the input image (2:1, 3:1,…) so we obtain a nice antialiasing effect. But this will also increase render time as well.
We could also activate Low Pass Filter to add a gaussian filter. This will help make the trial smoother and allows us to decide the radius of the kernel (Size).
In Trial Options there is Ratio slider that simulate the shutter time and Persistance slider that simulate the exposure time. These two parametres allow one to regulate the dimension and the trasparency of the generated trail. You can play with this parametres for obtain the visual result that you desider 
So, let see a render.
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Where’s the animation we rendered!
It’s the most important result we achieved today!
There’s also a very important node to speak about… the depth compositor!
Gherard! let’s other know more!!!!!!
Don’t worry boss.
A brand new post with the animation is incoming.
An we will also speak about the depth compositor (maybe in another post).
I’m used to fractionate the news I have to spread,
otherwise the post I write will be long as Dante’s DIVINA COMMEDIA….
(and remeber that I’m from Florence!)
I luv what you guys are always doing
Truly happy i found it on bing.I was talking with friends sometime back about this topic and I have to admit you cleared out a lot of things
Wonderful to read!
Great to have this comment box functioning again.
Long time reader, first time commenter.
Good information in your posting, I saw a report on television last week about this same thing and since I am getting married in 4 weeks and the timing couldn’t have been better! Thanks for the post!
I have to admit I don’t always agree with you, but in this case you really hit the nail on the head.
Such brilliant stuff and reporting! Keep up the great work guys
I agree with you. Which is not something I will usually do! I enjoy reading posts that will make one think. Also, thanks for allowing me to comment!