Post-Processing Workshop: Learn, Ask, Post Images, Get Help!

Also, the angle and camera settings for your render make it look like a miniature.

Nice! I only have elements 2 on the comp I did this on (the one I’m now), but as soon as I get back to a more “civilized” computer, I’ll really try to have some fun with it! The only prob is that images sometimes look way different on my comp (maybe it’s the “digital vibrance” that my nvidia card applies?) and the image was originally alot pinker on my comp, so I had to fix that. Maybe I’ll calibrate my monitor… Anybody have a link to a good calibration tut?

Hello I want to share with you my very short experience with image retouching. I’ve read two or three tutorials (there is a bunch of them at gimp.org) 'bout retouching and I’ve got to a procedure very simple to do an standard improve of your photographs.
With GIMP:

  • Tools -> Color -> level -> Hit Auto Button (this step is broadly explained over the internet and is very interesting to understand what it does) This step cannot be done “Auto” in photos with special color or light balance.
  • Filters -> Enhance -> Despeckle : This is part of the tutorial to reduce the CCD noise of the photos
  • Filters -> Enhance -> Unsharp : This is the second part of the tutorial to reduce the CCD noise
    I post you an example of a photograph of my elder son:
    Before
    http://blogs.ya.com/elopinador/files/Lucas2_400_300.jpg
    After
    http://blogs.ya.com/elopinador/files/Lucas2_retocada2_400_300.jpg

After the procedure I had to adjust the color balance in the back part of the photograph because it was a little red saturated.
I also played with a tutorial at GIMP.org called “Selective colorization” to achieve this next version:
http://blogs.ya.com/elopinador/files/Lucas2_retocada3_400_300.jpg

I hope it helps you.

This thread looks rather useful…
My Book Gateway project is very near completion now - it was officially finished a while ago, when I sent it off for a library card competition - but I decided that before I would post it in the Finished Projects forum I would do some post-processing. A bit of GIMPing later, and I got this:
http://img95.imageshack.us/img95/2213/bookbinsbookmarklibrarycardpos.th.png (warning: large image!) from this:
http://img398.imageshack.us/img398/4223/bookbinsbookmarklibrarycardsma.th.png
Now, I don’t think I did such a good job - the text has almost vanished under the glow. So, what would you suggest I do to improve this? Feel free to mess around with it if you wish, just please tell me how you did it so I can create an image that is 100% my own work.

wow! i TOTALLY missed this thread!

this is great, post processing is one of my favourite parts about 3d :smiley:

here are a couple of my acheivements:

Final:
http://img70.imageshack.us/img70/4303/waterfall52yl.jpg

Origional:
http://img68.imageshack.us/img68/5877/waterfall37uq.jpg

and not really post process, but still:
http://img244.imageshack.us/img244/6710/pimpride8xe.jpg

wow traitor, those first two pics are awesome, can you explain how you changed it? :smiley:

Okay, wanna kick a little life in this again, by posting a link to part 3 of a
tutorial series I’ve done, covering the post-process of my latest image
“Starry Night”. I hope someone will find it useful, or at least inspirering…

http://mathiaspedersen.com/2/tutorials_starry_night_3.html

Great thread. Ough to get going again. It feels a little static (or dead)

We should have more threads like this. Especially, as mentioned earlier, a
shader thread would be interesting IMO, since that subject is challenging
when it comes to doing/faking certain materials…
//The M.h.p.e.

My 2 cents… (no pics sorry)

I feel like any method to get the results you want is acceptable. If you want your image to be 100% Blender and can get your image to look the way you want that way, don’t post-process. If you’re not a pro at Blender, I really see no reason that you can’t give your renders a little more life with another program. I agree that not learning Blender is a mistake, but if you don’t want to, it’s not cheating to do just as much as you need to with 3D rendering, and then spice it up with post-pro. Alternatively, if you’re more on the 2D side of things, and you’re having trouble with the perspective on an object, there’s no reason you can’t render it in Blender and use that to help you create better 2D art. The process should only be criticized if it doesn’t give a quality result.

Well, I just wanted to ask if Blender is a good form of 2d art, because I am really trying to learn about 2d art on a computer before I learn about animation. And if anybody has a good download for a 2d art program, please can you please reference.

okay, i’m still doing this stuff, it helps so much.

here is a still from an animation i’m working on;

http://img114.imageshack.us/img114/8193/webtest11zp1.jpg

and I post process to gain direction and goal;

http://img144.imageshack.us/img144/1236/webtest12nt7.jpg

incidentally, we should have a paint-over help thread somewhere. i’d be very keen for that.

Nice thread. Somehow I’ve missed it for over a year!

Can I add one comment (for now anyway). Post-processing for enhancement of existing image data is one thing. Post-pro for adding data is another thing entirely.

Tweaking contrast, brightness, hue, saturation, sharpness, blur, etc is largely a matter of taste and intended mood and if the underlying render/photo is okay from a composition and lighting standpoint, then little harm can be done by messing with these things.

On the other hand, adding physical effects like smoke, fog, clouds, light, trees, reflections and so on, can cause all sorts of problems if you are not 100% familiar with reproducing the real world. If you’re going to add clouds, learn a lot about clouds. Study real clouds and photos of clouds. Better still, study great paintings of clouds by master landscape artists and see how they made 2D paint look like 3D clouds. Grabbing the airbrush tool and liberally spraying grey and white paint on your image just won’t work. For one thing, real-world clouds aren’t usually white or grey.

Cigarette smoke too has a life all its own. It doesn’t just rise as a blurry grey-white mist. It twists and bends and swirls in amazingly abstract patterns of thick and thin layers of smoke (patterns which can be reproduced fairly convicingly with the Photoshop “liquify” tool by the way).

Just some thoughts.

RobertT: Yup, I agree with you. Post-proc is really a fun part of the task, where sometimes you even wonder how you’re dirty render turns out to be so cute in the end.

There hasn’t been a post for a while, but I think this is a good topic as well. Many people use photos or other images for background in their own renders. You can do it internally in blender, but I prefer doing it with post-pro. One way is to render an image with rgba setting under Format in the Scene section. RGBA make an image rendered with alpha where it is present. If you don’t have a world setting then your bg will automatically render as alpha.
Using this, I import a rendered image with alpha into GIMP.
http://uploader.polorix.net//files/392/1fp.png

Next, I add a layer to the image and move it down one level, to make it underneath the image.
http://uploader.polorix.net//files/392/2fp.png
With the show/hide settings in the layers menu, you can edit the layer underneath, pasting images, pasting other renders etc. I use this quite often to achieve better sky and cloud settings.

~Pash

hi!

i know it’s been a while since someone posted in here,but

i made this, with Woodman5k picture:

http://www.cssroyale.com/upload/green.png

http://www.cssroyale.com/upload/night.png

Hi, guys. I was wondering, if it is possible to make all areas of certain colour of an image to glow in GIMP or Blender Nodes. To make an illusion of dust in the air. I have tried radiosity, but it affects only other meshes around but not the “atmosphere”. And blur nodes are blurring everything.

I am postpro noob so sorry if it is so simple task.

Thanks in advance :).

there’s a couple of tools to select by color in Gimp,so you should be able to do it.

Uff. I am making something wrong :(.

Here is sample picture. Can you tell me, how can I make only the white rectangle glowing with post-processing, please?

http://www.pharcom.ic.cz/BlendArt/PPTest.jpg

do you mean something like this?

http://www.cssroyale.com/upload/PPTest.jpg

http://www.cssroyale.com/upload/cc.png

Yes :). Thats it. Can you post a recipe? I hope it isnt done by manual drawing ;).

1.we’ll start with this image as we want something quick.but,keep in mind,that different pictures may need
different settings.anyway,this is not The way to do it,it’s just how i do it.

http://lliur.es/images/gimp/glowtut/tut-01.png

2.we’ll use the select by color tool:

http://lliur.es/images/gimp/glowtut/tut-02.png

2.1.we'll have to adjust the threshold value depending on the color range we want to select:

http://lliur.es/images/gimp/glowtut/tut-03.png

3.now we click on the color we want to select:

http://lliur.es/images/gimp/glowtut/tut-04.png

4.with the selection made,then copy (ctrl+c) and paste (ctrl+v),and we’ll get this:

http://lliur.es/images/gimp/glowtut/tut-05.png

5.before we get to final step,we need to do couple of things to our new pasted layer.

5.1.click the 'new layer' button,so the pasted selection becomes a new layer.

http://lliur.es/images/gimp/glowtut/tut-06.png

5.2.go to 'layer menu' and click on 'layer to image size.

6.finally,add ‘gaussian blur’.the amount of blur depends on how much glow you want.

http://lliur.es/images/gimp/glowtut/tut-07.png

7.results

http://lliur.es/images/gimp/glowtut/final-01.png

http://lliur.es/images/gimp/glowtut/final-02.png

i hope it’s not too long :o

a little bit more in here.

a lot more in here.