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Particle Effects and Roto

This task is closed
Created atJanuary 04, 2010
Created byKalle Max Hofmann
ClosedJune 07, 2010
Shots given26
Wreckupations3D Artist, VFX / SFX Artist
Reference media Download Walk-Shots_1-2-3_.mov Download Walk-Shots_4-5-6-7-8.mov Download Bike-Shots_123_clean.mov Download BikeShot-4.mov

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Hannu Hoffrén Bike 02
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Martin Lejeune Particles
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Hannu Hoffrén Bike 01
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Kalle Max Hofmann Bike Shot 04
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Hannu Hoffrén Bike 04
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Hannu Hoffrén About the downloadable shots
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Kalle Max Hofmann Bike Shot 07
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Closing Note

It is done; the post production of Snowblind is finished and so is this task!

Maximum Kudos go to Hannu, who single-handedly rocked this show! Thank you Hannu for your great work, and have fun with those little playthings you got in return ;P

We'll stay in touch :D

Description

My fellow Wreckers,

This call to arms goes out to all those who know their 3D and Roto tools!

To add the last finishing touches to Snowblind, we could damn well use some help in the VFX department.

One area is that in some shots, we didn't have the time to set up a keyable floor so the shots have to be rotoscoped - in our pipeline, it works best just to paint the floor green frame by frame, this can even be done in Photoshop CS3 or CS4.

The other challenge is for those who know how to set up a particle system - in our case it's all about snow particles. Obviously we have a lot of shots where characters walk or drive around in the snow and this would look much cooler if there would be little splashes of snow (or even fountains, depending on the shot) :D In some instances, we could also use fluid work - for BLOOD of course ^_^

We have now decided to put some shots up for download. That way, everyone can try stuff out and get direct feedback from the group. To keep the videos small, they are in anamorphic pal. Please resize them to 1280 x 720 (including a bit of black cache because the output ratio is 2:1) and then just put your particles on top.

For now we have two types of shots, "bike" shots and "walk" shots. In the bike shots we already animated a cloud of snow dust created by the wheels but it looks really bad ;-) So your task is to make something better - if you want you can also make exhaust smokes that may be a bit greyish.

For the "walk" shots we assume that the ground is frozen ice and there's just 3-5 centimeters snow on top which is rather damp. So what happens is that when actors lift their feet, just a bit of snow lumps is kicked up and falls to the sides. We don't need gigantic clouds of powder snow but for example in shot 4, the snow is definitely deeper so feel free to experiment!

Have fun,
Kalle-Max :D


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Hannu Hoffrén April 18, 2010 21:55 6 Thumb-ups
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Biker Girl on Road

Ok, this went as far as to version #4 before I even wanted to start asking any corrections in public. :) My biggest gripe I have with this is the feeling she's floating with the bike, and it is very hard to get rid of it. Then there's some other stuff like correcting the clipping of the trees and such. Also, would like to add some variance to the road with maybe some bigger chunks of snow. The scene should look like foggy dusk. More fog maybe?

I guess the final color grading & camera shake will be done by Kalle & co so won't focus on that now.

This is a lower resolution clip due to the 20MB limit. Would be nice if the limit could be a bit higher. pokes at WaM staff

Update: 05.mov, better bg track, more speed & fog.

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Hannu Hoffrén April 22, 2010 07:36 Flag

If that bike is unavailable I think I can use any other bike too if it is somewhat similar to the Biker Girl's bike. Turbosquid has one free but I don't have max by which I could convert it to 3ds or obj. http://www.turbosquid.com/3d-models/motorcycle-max-free/213158

Kalle Max Hofmann April 21, 2010 18:14 Flag

Well the guys who did that model have stopped working on Snowblind due to conflict with paid jobs, but I can try and ask them... And yes, snowflakes are always welcome here ;P

Hannu Hoffrén April 21, 2010 17:14 Flag

Great to hear this, thanks!

One interesting image I saw here at WaM: http://www.wreckamovie.com/system/shot_medias/0000/2250/Clayton_riding01.jpg. Any change to have that model? It would help tremendously in matching the 3d scene. Also it would help in masking the fog in 3d around the bike.

Oh, one more thing. Should add snowflakes? I wanted to keep them away as I wanted to see if I can create a scene with a feeling of moving fast without them. Flakes would definitely add some motion & detail.

Kalle Max Hofmann April 21, 2010 16:14 Flag

Congratulations from Bastian and me, this really looks quite sweet :D
The only thing that should be changed is the fact it would probably look much better to froget about the zoom and instead move the camera towards the bike! Because now, it looks like the trees would stop moving. This is optically correct of course but it looks weird and also, a "dolly movement" looks more expensive than a zoom ;P

And a liiiiiittle detail is that I think at one point it's pretty obvious that the same tree appears on both sides of the road, only flipped. Maybe you have an extra tree or just exchange that with the other one you used? Or maybe better yet, slap them both on top of each other and you have a third one ^_^

So but overall I must say that this really is much better than I expected! It may not be up to Michael Bay standards yet, but it definitively has very solid production quality, and that on such short notice... really impressive my friend :D

Hannu Hoffrén April 21, 2010 06:57 Flag

The composition is getting heavy as it takes now an hour and a half to finish rendering just in AE only. Update (#05) is uploading right now.

Sami Laulajainen April 19, 2010 21:05 Flag

KMH : I've been watching the clips and I get the grindhouse feeling. The thing is that when you see it all the time, it'll be ok. In a single clip it stands out.

Good luck with your project. Great material.

Kalle Max Hofmann April 19, 2010 13:54 Flag

Hannu, the zoom was done "in camera" with a zoom remote... So the only thing we could do is add a second digital zoom in post on top of that... which would be a vote for the option that we do all the zooming here, later...
And yeah about the speed; of course I didn't think of the fact that then the landscape has to be double the size ;P Well I dunno, maybe 150% speed will also suffice? Or we speed the whole thing up in editing...?

Kalle Max Hofmann April 19, 2010 13:42 Flag

Hi Sami, yes of course you are right in all points! In Snowblind we do this stuff all the time to give a campy "Grindhouse" feeling. So everybody is driving around in the snow with bare arms, people don't reload their guns (do they ever?), shot wounds to the chest aren't anywhere near lethal and so on and so on... oh yeah, and of course riding a motorcycle in the snow without spikes or anything. This is just our idea of creating "seventies bad" with contemporary means ^_^

The only "explanation" that is given for this is a corny intro speech that states that this is a parallel universe where people's bodies have "adapted" to the cold... hehhe... this will probably put some people off but if you accept this "comic book reality" it should be fun =)

Sami Laulajainen April 19, 2010 10:07 Flag

The motion is great, the boom/dolly (?) camera smooth, and the animation of the background is fluent. The expression on her face means business as well. With audio you'll have a great shot.

What worries me is not the appearance of the shot but the concept: Is the girl a superhuman and the bike a superbike of the future? Because a normal human couldn't do that for real. This might not be a problem when you see the clip in context in the film. Right now the appearance of "studio made" is hard on the clip. The details plus the following.

I don't know how much this means to you but...

- A normal person can't ride a normal bike in snow that steady - > super bike/person
- A normal person can't move that fast with open eyes in temperatures less than 0 celcius without her eyes filling with tears. Her eyes would get wet and close from time to time as a reflex -> It happens to me on a cycle in less speeds.
- A normal person can't move that fast without a shirt and keep the normal skin colour in her hands.

I have first hand experience : try downhill ski in a blizzard without your goggles. I did, it ain't fun.

Solutions: glasses, jackets, mystery powers, contact lenses, she is a terminator, skin transplants..

Of course the rules of physics can be broken (Renny Harlin's Cliffhanger. He should have known better). But I was just wondering if there is an explanation.

Hannu Hoffrén April 19, 2010 08:58 Flag

Well I have done lots of 3d / vfx, not just these kind of movie effects, so feel free to hammer my try to pieces if it is not good enough, I can take it. :D

The side image for shadow is a great idea, never would've thought of it. More detail to landscape should be easy to do as it is just a noise displacement. Making her move faster would be easy to modify too, but it will need some hidden gimmicks (maybe looping separate models instead as now it is just a long array) to the 3d scene as the relative sizes of the 3d objects will kill the raytrace accelerator as it is running in limits on the current setup already. I'll see what I can do.

About the zoom. In the raw file she winds the throttle but the zoom comes a bit later and smoothly. Should the zoom be synced with throttle somehow so that it looks like she's accelerating? It won't be real 3d movement towards the camera, but if the added zoom is subtle, it shouldn't be noticeable. About matching the zoom, I'll make one better match for next version and if it still "floats" I'll hand it to you guys. :)

Kalle Max Hofmann April 18, 2010 22:19 Flag

Especially considering you having never done anything like this before, this result is pretty marvellous! I think the "floating" feeling is mainly caused by the shadow - it goes down WAY too much and is so diffuse, that it creates that land speeder feeling ;P If you move the shadow up so its level with the wheel or turn it off altogether, it should look better. I can also provide you with a side shot of the bike - oh no wait, you already have that! So use that, then it doesn't have to be so blurry.

The next step to make it all work better would be to introduce really thick ground fog, like the dry ice stuff used in 80s rock shows... make the bike sink in almost to the headlight and we have one less problem :D

The landscape is so detailed now it allows me to nit-pick... hehhe... I'd try making it all a little flatter, but with more random bumpyness. So the hills are maybe only half that high, but have many little dents (if this isn't totally hard to do)...?

Oh yes and one major point is: make her go faster, I think it can be twice as fast to give more excitement to the viewer :D

And lastly, and this is a factor that also plays into the "floating feeling", is that the zoom doesn't really match. But I'd suggest that you render the whole thing a bit bigger without zoom and then we track it on... Or I can try and export some tracking data, maybe this can be made to work...?

Thanks,
KMH =)

Hannu Hoffrén April 10, 2010 23:55 5 Thumb-ups
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39a-07A

Here's the first version. Now some good night sleep.

Update: ..02.mov, gave slight transparency for the cloud & shadow + new cloud shape.

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Kalle Max Hofmann April 11, 2010 14:24 Flag

NICE! Okay that one is done I'd say :D And you're right, the job of president doesn't sound as desirable as it once did... Assassinations, sex scandals, plane crashes... better to remain an unpaid slave so things like that can't happen ;P
Oh and I almost forgot: Thanks for another outstanding shot!!!

Hannu Hoffrén April 11, 2010 11:56 Flag

For president eh? "Ich bein ein berliner". Oh but no, I don't want to get assassinated. I'd prefer to stay inside four walls in front of my mac and create some stuff.. like in update #02. Check it out.

Kalle Max Hofmann April 11, 2010 00:50 Flag

WEEEEEEEEEEEEeeeee..... AWESOME! Hannu for president!!!
For me, this is another instant strike. I mean you *could* try to make the avalanche cloud like a third less high so it doesn't cover them up entirely (I'm thinking of the cut to the next shot) and also the shadow of that snowcloud could be 20-30% more transparent.
Okay now excuse me, I have to look at that shot like 50 times more until i get bored 8D

Hannu Hoffrén March 19, 2010 20:54 6 Thumb-ups
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35c-24 particles

Ok, here's the first upload for this shot. Tried to make them hit at some small pile of snow so some debris flies on top of the hood. Let me know what do you think.

Update: .._03.mov, removed the hood popcorn, added more flying stuff to the side.

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Hannu Hoffrén April 08, 2010 07:38 Flag

Oh, if my daytime job would be as easy.. *dreams on*

Kalle Max Hofmann April 07, 2010 23:56 Flag

Hehhe I just reused the wheel box splashes as "front wheel splashes" in an unscheduled Biker Girl shot that just came up... Looks pretty nice! So it's another Hannu-Style instaclassic in the hall of fame... without you even doing a single click. Now that's work efficiency ;P

Kalle Max Hofmann March 22, 2010 16:33 Flag

Cool, got it! "Can't wait for another one", eh? Thats the spirit!!! :D
Guess I'd better cook something up then...

Hannu Hoffrén March 22, 2010 08:23 Flag

Went to bed right after uploading this, sorry. :P But the files are there now. Good to hear this is ok!

Can't wait for another one. :)

Kalle Max Hofmann March 21, 2010 23:02 Flag

Yeah I know how it is, sometimes you tweak and tweak and nothing seems to go forward. In most cases though, you're just so deep in the shot you don't see your hand before your eyes ;P And this also applies to this shot I think, as the result is totally BRILLIANT! The hood popcorn is great, just gives the whole thing a good healthy touch of realism. And the splashes from the wheel case are almost photo-realistic, they really look very, very good. So congratulations on another great example of Hannu-Style (TM) :D

If you don't mind you can put the files into the shared folder right away, then I'll wrap the shot up tonight or first thing tomorrow =)

Hannu Hoffrén March 21, 2010 22:28 Flag

The whole weekend was a bit of a hassle. Same thing with this shot, didn't get the "flow" feeling at all when working on this. Anyway, got some changes done at least. I wonder, is the hood popcorn too small now? And what about the side splashes, how do they look?

Kalle Max Hofmann March 19, 2010 22:24 Flag

Overall: Another nice job! I'm not so sure about the "hood popcorn" though... maybe it would work with some motion blur. But I think one really wonders where it's supposed to be coming from and for a 1.5 second shot, there's maybe too much going on. I'd leave it in the setup though, just reduce the size of the crumbs to maybe one third. Also, you could leave away the "splash" and just have the crumbs jumping around on the hood already, being pushed to the sides by the headwind. So basically make them smaller and get rid off the stuff flying up in front of the grill /hood ^_^

Apart from that, splashes, snow and the "micro dust" going over the windshield are all great.

As an exra wish, maybe you could make some splashes constantly pouring out of the wheel housing... as if the road were a bit wet? Because I think this area looks especially fake ;P

Hmm but again, the shot is 90% there in record time! You're just too fast, now I really have to find some more stuff for you to do before your addiction wears off ;P

Hannu Hoffrén April 05, 2010 21:29 5 Thumb-ups
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Gs39d

Didn't do much here yet as I'm not sure where to go with this, so there's quite some hard edges and such. The snow in this version looks quite thick and even though the foot goes down quite fast, it still feels that hardly any dust would move from there. Any ideas?

Update: ..03.mov, better tracking, more stuff.

Update 02: ..04.mov, better texture for piles, some more tweaking.

Update 03: ..05.mov, more dust & more tweaks.

Update 04: ..06.mov, smoother particles, got rid of the fog "blobs".

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Kalle Max Hofmann April 07, 2010 22:31 Flag

YEAH NICE! Much better! Another one down :D

Hannu Hoffrén April 07, 2010 22:25 Flag

Ok, next one is uploading. I think it is better but is it good enough? :) Gave some random movement for crumbs as they always felt like dropping too straight.

Hannu Hoffrén April 07, 2010 21:19 Flag

Hahah.. I can imagine the faces of foley staff. XD

About the blobs, they were the last thing I added here today and it seems I was a bit hasty by leaving them there without revising it enough. :P I'll tweak it a bit more as I re-render the crumbs.

Kalle Max Hofmann April 07, 2010 20:16 Flag

Yeah mee too... of course the foley guys were like: WTF is going on there?!? When they saw the sequence without effects ;D

So in the latest version, I think those blobs of dense fog rushing to the right look strange. I think they should me more diffused and move towards the camera. But I think you can leave those out and we adjust the fog amount in comp to match it to the shot before.

So the last thing that could be done would be more motion blur to the falling crumbs... everything else is great, again I especially like the "dust whirl" and the snow around the boot is genius anyway :D

Hannu Hoffrén April 07, 2010 20:03 Flag

Ok, #05 is uploading. Can't wait to see these with audio.

Kalle Max Hofmann April 07, 2010 11:59 Flag

Yeah I don't know, some things feel weird these days... YouTube has also been changed so the balance of the world seems off somehow ;P

Anyways, I'm, looking forward to the new version, but the old one is quite good already. We threw all the shots into the sequence yesterday and it's really quite impressive :D

Hannu Hoffrén April 07, 2010 09:21 Flag

Maybe there's something going on with WaM as, for example, I don't get any emails from private messages anymore.

Now that I really focus on the cut and not just the effects, yes you're right, it needs more dust. Render #5 should be ready this evening.

Kalle Max Hofmann April 06, 2010 23:24 Flag

Nice, I had written a comment but it seems it didn't work somehow...? Anyway, I had written that I don't think the snow piles look too bad, but I agree the new ones are way better :D Then I also mentioned the clipping error at the tip of the shoe but that seems gone now too. So the only question is, don't you think there'd have to be even more dust on the first couple frames to match the shot before it?

Hannu Hoffrén April 06, 2010 19:24 Flag

Newest render uploading (..03.mov). It has better tracking & some dust & crumbs. Oh, and the displacement for the snow around the shoe. :)

edit: still don't like the piles though.. must find some better texture for them..

edit2: (..04.mov) ok, now there's a better texture for the piles, also timed the crumbs better to match the angle of the bike & bodies.

ps. there's still some clipping errors from the new snow piles, will remove them for the final version.

Kalle Max Hofmann April 05, 2010 22:15 Flag

It's pretty cool as is, I don't think it needs much more except that the dust cloud from shot c still has to be in the front, diffusing slowly. If you absolutely want to push the thing to 2012 level, the snow around his foot could "cave in" after a few frames... you could displace the edge down by 1-2 pixels for example.

In the manner of a nit-picky art director, I'd say the piles of snow could be a bit higher. I think the one at the back wheel could go two thirds up to the muffler, and the one in the front could be just like the back one is now. Of course we'd have to do an extra matte for the foot in comp then - but from the looks of it, we need to do that anyways ^_^

While this shot isn't as spectacular as the others, it looks very nice nonetheless :D

Hannu Hoffrén April 05, 2010 19:22 5 Thumb-ups
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Gs39c

100% recycled material, contains minor additives.

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Kalle Max Hofmann April 05, 2010 22:09 Flag

just WOW once more - I just love the wind simulation effects. I think I'll have to rewrite the whole script for Snowblind 2 to get much more of these effects in ;P So this one was an INSTAKILL I'd say ^_^

Hannu Hoffrén April 01, 2010 18:55 5 Thumb-ups
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Gs39b

Boy was this a pain in you-know-where to get to this stage. Lots of fighting with older Blender version's particles, collision trouble.. weird physics.. and most of the time I was the error in the process. But, I think I found one bug too actually.

Aaanyway.. now I'm too (snow)blind to see if there's anything wrong here. So, lemme know, thanks.

Update: lap popcorn

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Kalle Max Hofmann April 02, 2010 23:41 Flag

Nice, have a fun time :D

Hannu Hoffrén April 02, 2010 23:38 Flag

Great! I'm not so sure about the clones though, let me think about it. Great to hear the movie's closing to be competed. I'm on a road trip till Sunday and continue then.

Kalle Max Hofmann April 02, 2010 22:21 Flag

LOOOOOOOL this is sooo awesome! Hannu, you are the absolute techno-overlord :D Could you please give me a sample of your DNA? Then I'll take that to the clone lab and as soon as 10 clones are ready, we can start work on Avatar 3 ^_^

Great - Another shot down! On our side there wasn't any slouching either, we wrapped up the principal keying work today! So now there's only those "special shots" to do as well as some cleanups and improvements... and after that, we go right on with the 3D version ;D

Hannu Hoffrén April 02, 2010 16:06 Flag

I present you, the lap popcorn! (Update ..02.mov)
The 3d collision model is not the most accurate one so they might float a bit though.

Kalle Max Hofmann April 01, 2010 19:37 Flag

Hehhe actually I think this is pretty ingenious... Suddenly "Snowblind - The Theme Park Ride" doesn't seem far-fetched at all :D
Don't worry about colour and weather style, "ve kan fix dat" as the austrian engineer said in the T3 bonus clip ^_^

I think a little detail to make it even more awesome would be if some of the crumbs would bounce off them and work their way upwards, until they reach lap-level and then fall off to the background. Kind of like the "hood popcorn" from the truck shot, but instead of the hood it would be the bike's body and the actor's legs.

Well I dunno if this is possible if you had so much trouble with this... I'd thought the shot before this was much harder, but then again what do I know about particles ;P

So crumbs or not, I think this once again friggin' rocks :D

Hannu Hoffrén April 01, 2010 19:00 Flag

Now that I looked and compared both of these last shots, they have completely different color grading & feel of the overall weather.

Hannu Hoffrén March 27, 2010 18:35 5 Thumb-ups
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Gs39a snow

Ok, some close up stuff here. There are some keying artifacts in the bike material so focus on the snow. Does it look like they're sliding downhill?

Update: _02.mov, corrected clipping and keying issues, added tracks & shadows.

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Hannu Hoffrén March 28, 2010 22:41 Flag

Great!
I hope this week won't be as busy as last. But at least it is shorter as the Easter is next weekend!

Kalle Max Hofmann March 28, 2010 21:40 Flag

Perfect! This is just plain beautiful! Totally beats me how you did it but you really turned the crap we gave you into solid gold ;P

So THAT'S A WRAP! :D

(and on to the next shot, hehhe)

Hannu Hoffrén March 28, 2010 21:22 Flag

Ok, corrected the edge issues and cleaned the key at the same time. I guess you may want to tidy the key a bit more so didn't do much work on it. There are tracks & shadows now. I can still spot at least one edge error at the front wheel's dust, will remove it for next render. This shot got weirdly overblown. Render times got easily over one hour but got it optimized to about half an hours. Anyway, anything else to tweak in this one?

Hannu Hoffrén March 27, 2010 20:22 Flag

Great! And great notes, thanks! I'll continue this tomorrow. Now going to see Milla and the good ol' Fifth Element.

Kalle Max Hofmann March 27, 2010 19:59 Flag

Yes Seppo you are right, that is the bike stand that is only used when you get off. We had it out for safety reasons, but as you guessed, it will be removed digitally =)

Seppo Hiltunen March 27, 2010 19:52 Flag

Nice animation. There is only one question about the bike, under the bike the supporting small metal feet...do they belong there to that scene and position and action of bike or are those to be removed later in postprocessing? (I am no biker, can't judge, sorry)

Kalle Max Hofmann March 27, 2010 19:20 Flag

This is madness! No! This is Sparta!!!
Awyawyawesome. The snow crumbs are basically photo-realistic, nothing more to be said there. The dust flying up is also pretty good and the little spash-streams at the edges of the wheels work nicely - even though there is some little clipping issue with some bright triangle being formed... well minor cleanup stuff I'd say. So, to top the whole thing off, I think what it really needs is a (very soft) shadow for the bike so you can judge the angle to the slope... but we can do that in comp I guess... Another great element would be if the bike leaves a really strong trail, or rather two, for each wheel. We'll definitely need that for the wide shot(s) that are coming up for this sequence... I think you can reuse your other trails for that though.

All in all: EXCELLENT!!!

Hannu Hoffrén March 14, 2010 21:54 6 Thumb-ups
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Sz39 snow

Same thing here than in the last. The focus is on the particles & snow.

Used most of the time working on wheels' snow, but still it looks a bit weird. But this is very short shot so I think this might already do. ?

Update: 03.mov, more subtle amounts of snow on the wheels.

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Kalle Max Hofmann March 17, 2010 23:06 Flag

Well thanks... surprising how much you can do with a couple of wooden boxes and green paint ;P And those two guys make a great team throughout the film ^_^

Hannu Hoffrén March 17, 2010 10:11 Flag

..Hannu-Style (TM).. Haha!

Just watched the shot and it looks great! The postures and especially the guy in the left at the first frame is funny as hell. The face expression and the hair and all.

Will try something asap.

Kalle Max Hofmann March 17, 2010 00:25 Flag

Hi Hannu, I've put up another shot for you. Not the totally horrible ones I mentioned, but a challenge nonetheless ;P At least it's some kind of a change - as this time, they're driving a truck ^_^

This shot gets a lot of cam shake later, which helps to make it look half bad. But of course, it still needs the fantastic Hannu-Style (TM) snow splashes and exhaust smoke. Also - to make things more interesting hehhe - it would be totally great if you could create some environmental fog and snow that engulfs the whole vehicle :D

Think you can come up with something?

Hannu Hoffrén March 16, 2010 16:38 Flag

Ok, cool!

Kalle Max Hofmann March 15, 2010 22:37 Flag

Nice! I'd say that does the trick. In the final shot, we will fake the wheel spinning by using animated radial motion blur... I think ; )

So another one down... seems that wasn't really a challenge for you Hannu ^_^

I promise for next weekend, I'll give something REALLY hard ;D

Hannu Hoffrén March 15, 2010 20:42 Flag

I hope you didn't hold it too long? ..especially as I took the easy road for now at least. :D

My intent was to use the luminosity of the wheels' details for snow opacity, which worked out nicely, but then realized that if I'd like to have the effect animated, I'd have to build the wheels separately and animate them. So, instead, I just reduced the amount of snow and at the same time made better mask and texture for it. It is better now, but is it good enough? :)

How are you going to animate the wheels by the way? By blurring?

Kalle Max Hofmann March 15, 2010 15:19 Flag

I'm holding my breath ;P

Hannu Hoffrén March 15, 2010 08:16 Flag

Maybe I should add a snowman behind there somewhere? Just so that it tells the viewer the actual temperature more accurately. No? ;)

I used the method that I used in the other wheel animations, but this one this is so close up shot that it won't work. But a good night sleep always makes wonders. I've got some better ideas already. Just have to wait until I get back home.

Seppo Hiltunen March 15, 2010 08:06 Flag

looks like wet snow, when the temperature is about 0 celsius...that kind of snow that is good for making snowballs or a snowman. ;)

Kalle Max Hofmann March 14, 2010 23:05 Flag

Hi Hannu, the splash wave is very good again, but it seems that wasn't the hard part from what you're saying ; )

I guess the problem with the wheels is that the texture on them is too coarse/soft so together with the motio blur, it lust looks like one giant soft brush stroke. So I guess you'd have to paint a texture first that has much more detail. You see this little indents in the tyre? I think probably there should be snow sticking in those, so its mostly really bits that are like 2 by 4 pixels at max. And in some spaces there could also be larger chunks... that could be flying off as the wheel is spinning, in case you're going for the VFX oscar or a PHD in major pixelwizardry ;P So the result should look more like fine streaks and not like one giant blob covering the whole wheel ; )

When in doubt, I'd try just making much smaller patches of snow spread across the wheels very sparingly and turn down the motion blur a notch...

Hannu Hoffrén March 13, 2010 21:45 6 Thumb-ups
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Ref39 snow

Hi!

Couple of tricky shots in progress.

This one's overall colors, atmosphere & camera movements are not in this clip, it focuses on particle effects only. I'm wondering, should the snow flying from the back wheel be more thick or is this thin(ish) dust & fog ok?

Update:
..04.mov: fixed some, added some.

Update 2:
..06.mov: more crumbs on right side and no "popping" when hitting in snow.

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Kalle Max Hofmann March 14, 2010 17:57 Flag

Don't worry, there's more where that came from ;P

Hannu Hoffrén March 14, 2010 17:09 Flag

Haha.. oh please would you, I can't seem to get enough of working on these. I think I'm having somekind of an addiction building up here. :D

Kalle Max Hofmann March 14, 2010 17:02 Flag

Now THIS is even better than awesome! I'm running out of superlatives here ;P

These little chunks of ice really top the whole thing of. I think it's perfect now! Another happy customer :D

...or should that be: another one down, and on to the next ;P

Either way; next time I see Roland Emmerich, I'll give him your number 8D

Hannu Hoffrén March 14, 2010 16:53 Flag

The disappearing problem was due to masking/coloring error. However, I gave some noise to different emitter properties and now the chunks have more random paths. I just wonder is it too random as the stream is not so visible anymore. I like the feeling that there's more flying debris now, though.

Hannu Hoffrén March 14, 2010 16:08 Flag

Oh yes, there's something weird going on as the preview in 3d view doesn't show anything like that happening there. I'll try baking the particles and if it helps, then render it again.

Kalle Max Hofmann March 14, 2010 14:32 Flag

Nice, the blocks are definetly gone :D The chunks at the bottom right seem to just "pop away" and disappear instead of landing on the ground and staying there... but I think they're not that important, as the center of attention naturally is with Biker Girl ;D

Hannu Hoffrén March 14, 2010 11:39 Flag

The blocks!!!11! I thought I got rid of 'em. I really need to borrow your block detection goggles Kalle.

Well, they should be gone now. Check 04.mov. Tried to make the particle stream more visible at right side too. Also, added some bigger crumbs to right side.

Kalle Max Hofmann March 13, 2010 21:57 Flag

WOW awesome stuff! This shot is going to be totally intense with all the other stuff (cam movement etc) added! One really has to watch it several times to get all the little things going on 8D

Well I think it's almost perfect. The only real "mistake" I can see are some lo-res blocks near her foot... but probably this is just some rendering issue?

One thing that could be changed is this: There's a great effect of little snow-pixels being spread out over the bottom right of the frame. Only I think you cannot really see these little bits in flight... Or are they just disappearing in motion blur? Anyways, making those more visible "in-flight" would be the only thing I can think of in ways of improvement.

Really, totally awesome work! The tracks are brilliant! And the little chunks flying out back! nicenicenice :D

Hannu Hoffrén January 29, 2010 00:01 6 Thumb-ups
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Bike 07

A version is ready.

Couple of things:

1. The easier, obvious part: splashes on the lens need to be rendered as a separate layer as the snow fall can't be on top of it, like it will come on top of the particle/dust/track layer.

2. A bit more complicated part: I've tried to do all these shots so that particle layers can be composited with normal color mixing mode, without any effects. But now, I think the snow on the lens looks better with displace as it gives it more wet look. However I can't render the layer with displace as the displace needs to bend the background, particles & snowfall for it to look realistic. There's a render without the displace too so you can see the difference and decide which is better.

Anyway, what do you guys think as overall? I like it already, but does it need more? I already tried to hide the front wheel with one splash. Also, I think the splashes at the right side take the eyes away from the wheel for a moment. By the way, I didn't add any rotation to the wheels as I'm not sure if they need it. Directional/radial blur might be enough.

Update: Bike07b.mov, edited the track and added some snow dust close to camera.

Update2: Bike07c.mov, tires have some snow now.

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Comments

Hannu Hoffrén February 14, 2010 15:03 Flag

Today we found out that one of the small water pipes had broken in our warehouse. Even though the pipe was small and managed to stop the high pressure leak, there's water all over the place. Also, there's still some -10 degrees outside so can't even keep the doors open for long to get the moisture out. Luckily we found some plumber to repair it. Can't do much else than surf the web while waiting him.

So, thanks for giving the terrible day a bit something to be cheerful about Carl (and Jani too as it seems I haven't replied to you :) ). :D

Carl Morys February 14, 2010 12:42 Flag

Thanks again Hannu. These bike shots were always the only thing where I thought: This looks cheap! (sorry guys haha) but now the problem is fixed because of your work! We watched it some days ago and the people thought these shots were TOTALLY new designed! I think nobody thought anymore it looks bad. I give you three thumbs up! oh no i have only two! haha ;-P

Jani Salomaa February 04, 2010 23:05 Flag

Living in Finland does teach you a thing or two about snow doesn't it ;)

I second Seppo's comment wholeheartedly. I'm amazed how you constantly find inspiration and new creative ways of getting this done.

I hope you can use some of Hannu's photos too, Kalle... Lord knows you've milked mine beyond any limits..

Hannu Hoffrén February 04, 2010 22:18 Flag

Ok, Seppo, that is the kind of comment that makes speechless. What can I say but thanks! ;) Motivating!
But I guess it is easier for me to do these snow clouds as like you said, lots of snow here at the moment. Here's a photo I took last week: http://hhoffren.deviantart.com/art/Cold-table-151430920

Seppo Hiltunen February 04, 2010 21:42 Flag

I have watched Hannu's contributions of particle creations with a big respect. Those look so good and quite natural. These days here where I live we have lots of snow on the roads and the powderlike snow behaves just like the particle clouds that Hannu created in his aniimations, when car is driving by. Congratulations. Good job.

Kalle Max Hofmann January 30, 2010 21:40 Flag

Sure, that would be great :D it's not that urgent though ^_^

Hannu Hoffrén January 30, 2010 21:37 Flag

Ok, I'll try something short first. I have another thing I need to complete for tomorrow, so I'll get onto this tomorrow evening at earliest.

Kalle Max Hofmann January 30, 2010 21:15 Flag

Erm no actually we have no footage and that's exactly the problem ;P Just imagine a battery of invisible fog machines puffing clouds of fog directly onto the camera... Basically like the effect you already did, but over and over again... Y'know? Or imagine a car driving through fog banks at night or something... We want to use it as a backdrop for introductory titles and text charts, giving a quick explanaition on the world the film is set in. (like in 80s Sc-Fi hehhe) The text will be black on that light grey cloudy background, and after it's faded out it becomes clear that the camera is flying through the clouds over mountains, only to dive down towards the Governor's fortress where the first scene begins :D

Hannu Hoffrén January 30, 2010 20:38 Flag

Sure, sounds interesting! Am I going to get any footage or screenies for reference?

Kalle Max Hofmann January 30, 2010 17:23 Flag

Great! I don't mind the drifting, it's all going so fast noone will notice ^_^ Cool so that's another finished bike shot :D

BTW this dustcloud that is blown over the camera has given me another idea... For the intro of the film we need an effect that looks as if the camera would be going through clouds over the mountains. Hannu could you make a clip that is about 30 seconds long where fog keeps coming at the camera over and over again? We've thought about using stock footage, but I really love your effect, especially the end bit where you see grains of snow flying very closely over the lens :-)

Hannu Hoffrén January 30, 2010 14:43 Flag

Ok, added some snow on the tires. There's some minor drifting at the beginning with the back tire's snow texture, is it too noticeable?

Kalle Max Hofmann January 30, 2010 02:55 Flag

I totally agree that it would be nicer if the bike could start slower - the problem is that we had to film the bike completely static. In reality, if the bike accelerates, the suspension would move, it would go down a bit in the back, the riders would be pushed back a little and so on and so on. In our shot, NOTHING happens. And to hide this fact, we need a super sleek kickstart and lots of motion blur - otherwise it totally looks like a cardboard animation... believe my I've tried it. So I guess what we've got now is quite good :-)

Still I wonder Hannu... couldn't there be a *little* snow sticking to the rear wheel? If it's not a helluva lot of work I'd really like to see this ^_^

Hannu Hoffrén January 29, 2010 20:30 Flag

I do agree with Jani. A bit of easing to the beginning of acceleration would be nice. Anyway, I changed the path a bit at the beginning and then added some dust swooshing in front of the camera. File will be uploaded after couple of minutes.

Jani Salomaa January 29, 2010 09:23 Flag

Seriously, fine work once again. The splashes are exactly what's needed.

But the bike still seems to shoot outta a cannon. There's so much snow, there's no way it can accelerate without the back wheel spinning on empty. Kalle, is there any way to slow the initial acceleration down?

And you'll never catch me in Karma! Muahhahhaaa :P Yeah, it is kinda addicting, which is weird, since karma does absolutely nothing!

Hannu Hoffrén January 29, 2010 08:36 Flag

Yes, I've been following that number for a while now. Kinda addicting. :D

Carl Morys January 29, 2010 01:22 Flag

Hannu you are on the way to the top of Snowblind members with most karma :-D good work!!

Hannu Hoffrén January 29, 2010 00:21 Flag

Oh yeah, the track. I was thinking that they rode there slowly so it would be more like a clean track. But, yes, now that I look at it, the track can't be that flat and clean as the new track seems to have more depth in to it. Will do that tomorrow if the feeling of freedom caused by the weekend won't take me away from screen. ;)

Kalle Max Hofmann January 29, 2010 00:10 Flag

Wow great! The lens splashes and displacement are truly an ingenious way to make the shot more lively and also cover up its shortcomings ;-) Still since Jani mentioned the alignment of the front wheel I cant help but stare at this ;-) So we'll definitely fix that in comp.

The displacement also is a definite must, it just looks so cool! Unfortunately I think we have to do it here because we'll probably change stuff around in the background. But if you give us an alpha layer that controls the depth&position of the displacement, we can use Saphire Distort (it was called "Lens" before version 4) or flame's displacement map. Either way we can recreate the look you designed. Really nice!

Oh BTW I found one minor thing that you could change though; don't you think the bike's "old" track should look a little more rugged from the beginning, in the vein it does in the end?