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Adding grass to renders in Photoshop
show user profile  GirishDJoshi
Somehow I have never or hardly met any clients who asked me to add grass in 2d than in 3d.. for that matter even plants.

But recently few local fellows have been asking me this a lot.

I need some help on this workflow.. any links / videos would be great.

Thanks in advance.

Seriously.. help. Please.


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read 1317 times
8/17/2012 9:07:22 AM (last edit: 8/17/2012 9:07:22 AM)
show user profile  STRAT
to be honest, 99% of clients dont know or care whether it's 2d or 3d - they just want epic landscaping.

you can get great 3d landscaping packs for vray these days, which are becoming ever more realistic. these include especially made plants, bushes, tress, shrubs, grasses and grass lawns etc etc. but these packages usually cost and, will never outshine a photograph in terms of realism.

big difference - 3d stuff is so much more easier and, importantly, convenient to use. chuck it into the scene, hit render, no messing. Using photographic material requires the photograph and your rendered 3d image to match up exactly the lighting conditions, shadowing, tones, colour matching and perspectives to be able to look convincing.

The first thing is to search out the correct landscape element that suits your scene - we've all trolled the web looking for suitable hi-res elements for our images, but rarely find anything perfectly appropriate. The trick here is, as with 2d/3d people in a scene, is to go out with your camera set at 10 meggapixels per standard or something, and shoot away. Keep your camera with you and when you're out and about take a load of shots for your library.

i know this is an obvious thing to say and easier said than done, especially in hindsight or when you're starting your collection with deadlines looming, but it's true unfortunately. you have to start somewhere.

What i do these days is wait until my scene is ready for grass or trees, then go out on a mini shoot to photograph the exact elements in the exact lighting and perspective matches i need.
Only takes me a lunch hour, and i'm lucky to be surrounded by fields, parklands, forested areas and beaches all within a 10 min drive. Even the UK whether gives us the full gammut (usually pi55ing down tho) at a flip of a coin.

Another great resource on the web is to search out golf clubs. all these places are is lawns. plenty of hi-res images to be found there.

As for work-flow - wait until you have the appropriate lawn or grass photo that more or less fits the scene (the less photoshop colour adjusting you need to do the better) and take it from there. Only basic photoshop skills are really needed. nothing magical. It'll soon be made obvious how convenient the correct photograph will make life.

And if your client specifically requests photo grass, tell him you'll need to specially go out and shoot some. make sure he's aware of this. shouldnt require any extra budget on costs, just time.





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read 1311 times
8/17/2012 9:26:28 AM (last edit: 8/17/2012 9:34:14 AM)
show user profile  STRAT
as you probably find mate, interiors require much less (if any) photo comping compared to exteriors, and i know your exteriors have a load of 3d landscaping in them. this is a shame is this lets the rest of your rendering down. not your fault per se, but i'd love to see you start to use more and more 'real' stuff in your externals. that'll just elevate your external shots back up to where they definitely should be.

(in my opinion, you cant get more 'computery' than a displaced lawn, no matter how much time you pump into it)





SJLEWORTHY.COM











read 1303 times
8/17/2012 9:37:40 AM (last edit: 8/17/2012 9:39:06 AM)
show user profile  HateTank
I do 2D on 3D for exteriors quite a lot...
Usually I use a Multimatte to get lawn areas and such masked out properly. Then I add a nice, big photo of a fitting lawn, cut it to the mask, and use a brush with grass straw shape to clone stamp straws along foundations of buildings, at the edge of foot paths etc. using the grass texture as source... be sure to clone it on the top of your layer stack, or it may become hidden behind objects...

Most of the short grass in these shots:http://polygonpoop.dk/2009/02/cadesign-skagen-project.html
- was done using this technique - long grass/weeds/straws are 3D planes scattered in 3D...

This is an old picture though, Unfortunately I don't have any newer I'm allowed to show publicly.

You can get far with proper 3D models as Strat mentions, no doubt about that. It usually does unspeakable things for your render times though. You can get equally good results with good PS work in my oppinion... But you obviously loose the flexibility of 3D, which is a pain in the ass, when the clients asks you to change the angle...



Nick Jensen
Polygon wrestler - Rockstar

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read 1294 times
8/17/2012 10:06:06 AM (last edit: 8/17/2012 10:06:06 AM)
show user profile  donvella
I would second HateTanks idea of the matte areas.

For the plants, cant you render some plant cards (render on plane), and make them face camera? Sounds dodgy but should do the trick, or as strat said, use 3d ones and say they are 2d :) (render times arent that bad these days anyway).




read 1237 times
8/18/2012 4:52:28 AM (last edit: 8/18/2012 4:52:28 AM)
show user profile  digital3ds
** currently downloading vue 10
- Mike Sawicki




read 1230 times
8/18/2012 5:17:44 AM (last edit: 8/18/2012 5:17:44 AM)
show user profile  GirishDJoshi
I have made the clients agree to 3d models :P

But I will still carry on my tests with PS it's tough, but saves a lot of time. For sure. Atleast till I update my Pc :) hell I can't render 3d grass on a 8gb machine

Downloaded loads of photographs, grass/trees/plants let's see how it goes.

Thanks for all the input, fellas.



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read 1205 times
8/19/2012 5:47:34 AM (last edit: 8/19/2012 5:47:34 AM)
show user profile  donvella
You could render grass on a 2gb machine...

Use autograss, multiscatter or Vraydisplacement, try mix maps they work well for varied height and dont forget your UV channels, you can split areas of your grass into crab grass, normal grass, long grass etc.





read 1183 times
8/20/2012 1:57:25 AM (last edit: 8/20/2012 1:57:47 AM)
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