da_chris Posted February 1, 2007 Share Posted February 1, 2007 hello everbody, i want to create grass. i found a picture in internet (you can see below). looks like 3D or not?? my problem is that i don't know how i can create this can you help me?? thx Chris Link to comment Share on other sites More sharing options...
STRAT Posted February 2, 2007 Share Posted February 2, 2007 that grass could be 3d (displaced) but it just looks like a flat texture map to me (maybe with a spot of bump). The key to getting nice maps like this is finding yourself a nice huge grass map in the first place. mine are all generated from photos i've taken. you can overlay noise layers to make up a nice tiling map, but this will slow down render times. you can certainly make 3d grass or displace some, but in instances such as this you wouldn't want to. Link to comment Share on other sites More sharing options...
da_chris Posted February 4, 2007 Author Share Posted February 4, 2007 what do you say to this picture? the grass looks amazing! Link to comment Share on other sites More sharing options...
cuba Posted February 5, 2007 Share Posted February 5, 2007 creating grass: * flat texture * displacement map of smal noise map * hair module (attachment) Link to comment Share on other sites More sharing options...
STRAT Posted February 5, 2007 Share Posted February 5, 2007 what do you say to this picture? the grass looks amazing! looks standard bump mapped to me Link to comment Share on other sites More sharing options...
cuba Posted February 5, 2007 Share Posted February 5, 2007 grass Link to comment Share on other sites More sharing options...
da_chris Posted February 6, 2007 Author Share Posted February 6, 2007 i'm exactly searching for grass like these but i don't have the hair module. so can you show me how to create grass like your 3rd example? thx chris Link to comment Share on other sites More sharing options...
STRAT Posted February 6, 2007 Share Posted February 6, 2007 if you want grass like the first 2 pictures you posted you dont need any extra modules. just a nice grass texture map and a small touch of photoshop know-how. 3d grass is nice, but takes ALOT longer to render and isn't usually needed in archi visualisations. Grass in new developments is usually newly grown or rolled turf (where a texture map will do) and not super bushy as generaly shown by 3d plugins. Link to comment Share on other sites More sharing options...
cuba Posted February 6, 2007 Share Posted February 6, 2007 left was made with the hair module; there is a different plugin on this site: http://www.bgs-group.de/seiten/usframe.html i haven't used it yet, good luck Link to comment Share on other sites More sharing options...
Jorge Arango Posted February 8, 2007 Share Posted February 8, 2007 i'm exactly searching for grass like these but i don't have the hair module. so can you show me how to create grass like your 3rd example? thx chris Aurety has published a texture that looks very much like the third example. Search for it in cgtalk. Also, you can take a picture of a grass field and apply it to your object with frontal mapping. Jorge Arango Link to comment Share on other sites More sharing options...
da_chris Posted February 8, 2007 Author Share Posted February 8, 2007 thanks jorge that was exactly what i'm looking for chris :D :D Link to comment Share on other sites More sharing options...
chalk Posted February 16, 2007 Share Posted February 16, 2007 thought i'd jump on this thread as grass has always been one of those things that annoys me in my archviz renders (as well as trees, lighting, textures and GI So i played with various layers of noise etc and came up with this image. I was trying to replicate the images posted previously and thing im getting close although maybe i need a bit more white specks. Let me know what you think! Link to comment Share on other sites More sharing options...
STRAT Posted February 16, 2007 Share Posted February 16, 2007 the near texture looks lovely, but it falls away into the distance. also, the colour needs changing personally for stills i'll ALWAYS substitute my cg grass with real photo grass. there is purely no better solution than the real thing. Link to comment Share on other sites More sharing options...
chalk Posted February 16, 2007 Share Posted February 16, 2007 hmmm. there's no way of really getting over that is there? Unless i make the texture bigger so its still vizable further away? This scene will be animated as well so i'm gonna carry on with this method but for the still shots i may use a photo. Problem is i dont have many. Are you just using a photo and overlaying it in Photoshop and trimming away bits? Link to comment Share on other sites More sharing options...
STRAT Posted February 16, 2007 Share Posted February 16, 2007 Are you just using a photo and overlaying it in Photoshop and trimming away bits? yup. just find an appropriate photo, over lay it in photoshop, making sure the colour, size and contrasts are correct, then trim to suit. i usually take my own grass phots, but there are loads on the web to find. hint - golf courses. Link to comment Share on other sites More sharing options...
chalk Posted February 16, 2007 Share Posted February 16, 2007 thanks for the tip, got a couple of goodun's Heres a couple more images - one out of c4d with my texture (with lines now) and the other with an image sliced to fit. I had to get the grass sample and double it up in length and quad it in height, then play with clone tool to get it to look normalish. Link to comment Share on other sites More sharing options...
STRAT Posted February 16, 2007 Share Posted February 16, 2007 here's a couple of 2 min tests. i think grass photos works nicely Link to comment Share on other sites More sharing options...
chalk Posted February 16, 2007 Share Posted February 16, 2007 middle one looks best... almost makes mine look far to green! ... and heres one with hair and 2 million hairs. Only took 5 mins to render..... Link to comment Share on other sites More sharing options...
chalk Posted February 16, 2007 Share Posted February 16, 2007 you know your website is suspended as well steve? Link to comment Share on other sites More sharing options...
STRAT Posted February 16, 2007 Share Posted February 16, 2007 you know your website is suspended as well steve? yup, long story. infact, i dont think i'll even re-new it at the moment. financially theres no need to. Link to comment Share on other sites More sharing options...
Billabong Posted February 19, 2007 Share Posted February 19, 2007 middle one looks best... almost makes mine look far to green! ... and heres one with hair and 2 million hairs. Only took 5 mins to render..... Would you mind giving your settings for that grass Chalk, I could really use that today I have to make all the green you see in this pic, grass and its going to be animated, one other question, once i make the grass with hair, If i send it to my client who does not have hair, who will be doing the animating, is there a way to do a current state to object or something so he could use it, I could really use some help here on figuring out the best way to go. thank you for any help, the animation will be flying through the front doors and around the park, so the grass will probably be super close to the camera Link to comment Share on other sites More sharing options...
chalk Posted February 19, 2007 Share Posted February 19, 2007 Yo. The hair grass is pretty much the standard settings. I've just turned on Kink and Frizz and shortened the length to 20, also given it a green gradient. I had to make 2000000 hairs to fill that space in though. Pretty stright forward really. The other one is just green colour with various different noises in different channels. Think i put i fusion in the bump and then played with 2 different layers of noise. and the contrast and clip settings. I also put some noise in the environment and luminance channels in an attempt to get little white patches and specks that you would see. I had to up some of the noise size to 2000% and play around with it a fair bit but you you should be able to knock one up in a few minutes with a bit of tweaking. Link to comment Share on other sites More sharing options...
transformav Posted February 19, 2007 Share Posted February 19, 2007 here's a couple of 2 min tests. i think grass photos works nicely Strat, The third image to this quote a cropped scene with seasoned grass, is that just a map, if so would you share a basic scene file so we can understand further what you do to the map and how long it takes to render?? Thanks Martin Link to comment Share on other sites More sharing options...
cloaked_spectre Posted March 5, 2007 Share Posted March 5, 2007 regarding shadows when using 'photochopped' grass.......i have problems with the shadows cast on the alpha layer lawn when i bring in the rendered image into post (I use GIMP).....I have even tediously recreated every shadow cast by bldgs and trees, etc in post production to resolve this problem on shadows on the grass (not fun)....??? the old MAX scanline renderer would handle this OK if I remember correctly....but the new raytraced engines don't seem to.....it is the realism of color bleeding, i believe, that is the reason for this...(?) Link to comment Share on other sites More sharing options...
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