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Photo Restoration Repairing damaged photos

transfer a shading

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  #11  
Old 08-24-2005, 05:59 PM
doonee doonee is offline
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racc
i guess its going to be a question of fine tuning.
the shading definitely does take something away from the texture.
a subtle hint of shading is most likely enough, because the elevation and shading of the DEM will add addtional depth and realism (hopefully).

anyhow, here is a quick model of A draped over the DEM.

the new B overlay, having 10x the detail, will hopefully enable me to 'come a bit closer'..

You can observe how, in A, the shading 'proper' of the overlay helps the picture as a whole, and i would not want to loose that.

i also tried to make a selection of the darker tones, fill that up with some black color and creat a shadow layer with that, but i did not like that very much. im sure that it can be done better ...



regards
doonee
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File Type: jpg iDEM.jpg (23.7 KB, 16 views)

Last edited by doonee; 08-24-2005 at 11:14 PM.
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  #12  
Old 08-24-2005, 06:04 PM
doonee doonee is offline
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btw ...
any of you guys knows hwo to make a luminosity selection ?
is it the option that appaers under
>select>color range ?

if so, is it normal that i cant define 'fuzziness' for this option ?

regards
doonee
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  #13  
Old 08-24-2005, 06:11 PM
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goose443 goose443 is offline
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Donnee,

You can make a luminosity selection (on a mac) with apple option ~

You can then fune tune it (fuzziness) buy making the selection into a quick mask and writing curves or playing with levels. It takes a bit of getting used to but it's more precise that the color range fuzziness slider.

It's actually a really cool, really worthwhile option.
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  #14  
Old 08-24-2005, 06:37 PM
doonee doonee is offline
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@goose

i googled, and found ctrl+alt+~ for PC, but that creates and error here,
maybe due to the portuguese keyboard (~ in portuguese is a 2stroke char).

could you tell me the path to get there via the menu ?

regards
d
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  #15  
Old 08-24-2005, 06:39 PM
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goose443 goose443 is offline
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Doonee,

Unfortunately I think it's one of those commands that's not mapped to the menu. I'm almost positive though I could be wrong.
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  #16  
Old 08-24-2005, 06:43 PM
doonee doonee is offline
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ah yes, racc ...
messing with the DEM itself also comes into play in this case, because the curse of the rivers is incorrect. Either the rivers changed course, which is possible, or the pointweighting of the DEM is too unprecise to guarantee an even depression of the riverbeds.
In any case, either I have to convert the DEM into RAW, load that into PS and try to create some kind of mask form the rivers in the overlay to apply that to the DEM, or the whole thing has to go through a heightfield editor (Leveller etc.) somehow (shudder).


d

Last edited by doonee; 08-24-2005 at 11:11 PM.
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  #17  
Old 08-24-2005, 09:54 PM
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Racc Iria Racc Iria is offline
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Doonee...

I thought the DEM rendering with the new surface draped over it looked pretty good. The rivers didn't seem that out of place, either. But, you are more familiar with them than I am. You can also get a little more shading in Terragen by changing the sun angle and position so it will cast deeper shadows. Maybe then you wouldn't need the "extra" subtle shading.

Quote:
doonee said:
i googled, and found ctrl+alt+~ for PC, but that creates and error here,
maybe due to the portuguese keyboard (~ in portuguese is a 2stroke char).
Another way to get the luminosity selection without using the ~... Go to the channels palette and Control+Click on the RGB channel. You'll see some marching ants in the image. From there, just save the selection and you'll have the luminosity information stored in an alpha channel that you can then cut and paste or edit in the normal ways.

--Racc
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  #18  
Old 08-24-2005, 10:58 PM
doonee doonee is offline
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racc

here are some quick detail renders ...
1 the rivers ... (i exagerated height a bit, to make the point clearer)
2 when you get too close (to a 15m/pixel picture)
3 getting closer after having exchanged the texture (to a 1m/pixel picture)

Terragen is pretty lousy for straight 100% overlays, because it streches the pixels in the foreground way too much. When you try to maintain distance in order to avoid that effect, you usually run out of sky or horizon. A way to avoid that is to create several bw mask-overlays, but somehow i find that very worksome (and a bit unprecise). Another way is to plan for HUGE renders with extra foreground and then crop some of that for the final. All in all my TG expert buddys have all recommended me to stay away from trying single overlays in TG. You just loose too much detail.

rgds
d

PS
btw, i think i made a mistake earlier on:
i wrote that the first render above was B (new texture) draped over then DEM, but of course it was not.
It was A (old, original texture), of course
I went back and edited the post to save other readers from confusion.
Attached Images
File Type: jpg rivers1.jpg (20.6 KB, 12 views)
File Type: jpg 2close.jpg (17.3 KB, 9 views)
File Type: jpg sc25.jpg (47.8 KB, 12 views)

Last edited by doonee; 08-24-2005 at 11:12 PM. Reason: orthography orthography orthography
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  #19  
Old 08-24-2005, 11:01 PM
doonee doonee is offline
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Quote:
Another way to get the luminosity selection without using the ~...
cool !! )
thanks racc!
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  #20  
Old 08-25-2005, 09:22 AM
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Racc Iria Racc Iria is offline
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You're quite welcome.

In your examples above... #3 looked pretty good to me.

--Racc
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