By kind recommendation of Kraellin, i move this topic over here from the
software forum. ....
I currently write on the environmental history of Brazil, which also involves the reconstruction of historical and prehistorical landscapes.
Lately, I've been trying to produce some illustrations for this work, using a variety of GIS/Landscape Rendering/3D applications.
Id like to add Photoshop to this arsenal, but Im afraid I still dont know enough about the detailed workings of this great programm, although ive been using it superficially since years (like so many).
To put it in a simplified manner:
I have aerial footage of tropical forests, which I'd like to insert, as skillfully as possible, into wellknown, recognizable motives (stuff known from postcards etc.), in order to revert these 'back in time', and thus create a series of before / after pairs.
I decided look for help with that, since my own humble nibblings with the clone stamp have left me quite dissapointed so far.
First, of all I'd like to ask for some general advice, probably throwing a few keywords at me would already do it.
Then, I can also prepare some examples to post here, and if ne1 would be willing to bear through these pieces of cg-butchery and give me some hints,
id certainly appreciate it.
Regards and thanks to all
ok, here are two representative examples of what im torturing myself with these days.
example one: ssa25-22.jpg
pasting forest footage over an aerial photograph.
as you can see, all i do is paste in some forest, and then distribute it
with the clone stamp.
example 2: paitest222.jpg
pasting forest footage over a TerraGen render.
here the plan is to use the TG render, pre-textured with material from the forest footage, as a guide for the PS clone-texturing. Textures for rocks etc will come from Terragen itself. Its the trees that are the 'problem' ....
Obstacles, as you can see, are many.
One thing that has been bugging me is the problem of adjusting the faint blue glow that landscapes get on a distance. I was wondering if i could somehow clean that blue glow off the footage, and later add it aain artificially which would increase my choices of what material to use.
Another thing would be to skew the footage appropiately to exactly match the angle of the pic.
So, if ne1 could put me on the right track with this, id be happy as a hog ..
Last edited by doonee; 08-10-2005 at 08:37 PM.
and another example, a different approach, a less representative one, due to the lack of historical photography.
wb 18502.jpg is a rather rare historical pic, from 1850, of a beach in brazil, now located in an urbanized area.
of course it would be cool if i knew how to colorize this thing......
in wb 15002.jpg, i have been messing with the former, removing bridge and houses and adding some vegetation.
im sure this could be done better, and of course, it would be cool if it could be in colour.
so also, here, any hint at all is appreciated.
im aware that these 2 examples are rather 2 different topics, but i didnt want to post all over the place.
thewhat they have in common is that they explain what i mean to do with PS, (i hope.)
There are other approaches involving GIS and 3D applications too.
rgds and thanks for the attention ...
i just noticed that the pics i attached are probably too small ...
if you need bigger ones to able to comment on them, plz let me know ...
Last edited by doonee; 08-10-2005 at 08:38 PM.
k, here are the pics again, 800x600
plz note that in 'paitest.jpg', the Terragen 'vegetation' in the foreground has been replaced with the same material that was the source of the texture. It stops shortly before the hills, and id like it to cover the entire area, and 'behave' correctly at slopes and depressions.
in ssa.jpg, i did not worry about the borders of the forest at this (experimental) stage, i was more interested in trying to mimick the elevations of the underlying landscape, and creating the impression of depth.
note that my technique is (sadly) rudimentary. i just paste and clone and erase, cause thats all i know to do. i would be curious to learn how i could improve my technique. I heard about some tricks that can be done with layers for atmospheric effects, and selfmade brushes, and what not, but i know -0- about that (yet) ....
regards and thanks
ok, let's take one image at a time here. you've got 4 posted, so let's just cut this down to one for the time being.
in your terragen picture, you've already done some of the work, yes? it might help here to show a before and after of the work. that would give us a better idea of where you want to go with this. i get the overall idea; you're doing a before civilization and an after. ok, that's fine.
regarding the hills and trees, wouldnt a number of those hills/mountains be bare of trees natually, at least the higher up you go?
the blue glow can be reduced or removed a number of ways. i did a little on the terragen picture just to test. i simply made a mask of the area i wanted to affect and then turned it into a selection and applied the fast fix filter plugin to lower the blue a bit. you could also just make a freehand selection and do the same.
you could also make a new raster layer and on the new layer paint a green or yellow, then just lower the opacity of this layer to tint the underlying layer.
you could also maybe just add an adjustment layer for curves and adjust the blue curve to reduce the blue in the picture, or combine that with a mask/selection and do just selective areas.
now, before i go any further, if the problem is not knowing all the things you can do with photoshop, then the thing to do is, study photoshop things like layers and masks are the meat and potatoes of photoshop. it may seem pretty complex and it can be, but by taking just one thing at a time and learning that, you can simplify it down pretty quickly. i dont see anything you've asked about that cant be done in photoshop or another graphic editor. so, the trick is knowing what you need and knowing how it works. and for that, you're going to have to invest some time in learning photoshop.
now, in all that i'm not saying we cant help you out here. we most likely can. but, let's take one image and one or two things you want to do with that image and narrow this down a bit. your cloning looks fine; so, what's next?
i posted these 4 pics to give you an overall impression on what im trying to do.
whatever appears as bare rock in this particular pic, is naturally bare due to climate, slope etc.. generally speaking.
the idea with using terragen, in this case, is to have it supply a guide to the landscape, and to have it do the bare rock whenever its appear (in the sample pic, the rocks are still untextured.)
Thus, what you see as bare rock in this pic, wil also be bare rock in the final.
The addition is the arboreal vegetation in the depressions.
This particular landscape has been degraded by mining activities, and the valleys are now competely bare of arboreal vegetation.
(i could also post a foto of how it looks there today, if you like).
When i was talking about 'correct behaviour' on slopes etc, i meant that
i was trying to make the texturing follow the smaller ups and downs in the valley areas.
ive merely been winging it with this great programm
for too many years, and this is a good oportunity to smarten up a bit.
im already all over your tutorial section.
the next thing, i would guess, would be to scale the cloned material in order to use it on the areas in the back, ....
sorry, perhaps i havent been too clear on what i meant.
i meant that my aerial *footage* comes with strong distant glow,
which has so far limited my choice of material for cloning ....
in terragen, on the other hand, taking the distant glow out of the atmo
often gives us an ugly white line aroudn the horizon. usually, that can be encountred by rendering twice, once with glow and once without.
in this case however, the headache comes from the blue gradient in the
forest footage to be added. (very much the case in ssa.jpg)
thanks for all the attention and patience
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