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brighten up a drawing

Nov 9, 2011, 08:22
Post: #1
brighten up a drawing
Hello,

I am making some painting schemes for a truck. (The drawings are not finished yet but i would like to post the question in advance so i don't have to wait later on and i can experiment before going to the real deal)

I would like to brighten them up so the customer gets the best possible (within my power and knowledge of gimp Wink)

Has anybody any ideas?

Thanks!!!

.jpg
.xcf
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Nov 9, 2011, 08:40
Post: #2
RE: brighten up a drawing
I don't quite understand what you mean by "brighten them up". The colors are too dark?

[Image: 2Tvo0.png]

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Nov 9, 2011, 13:13
Post: #3
RE: brighten up a drawing
I thought it might be misunderstood but i don't know how to explain it in english.
But something like the picture with your nick in it. It gives it a little shine... bring the colours a bit to life if you will...
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Nov 9, 2011, 13:17
Post: #4
RE: brighten up a drawing
Maybe even give it more of a 3D look
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Nov 9, 2011, 16:02
Post: #5
RE: brighten up a drawing
Aw, yes, pseudo-reflections. Will try to come up with a reproducible procedure.

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Nov 10, 2011, 10:06
Post: #6
RE: brighten up a drawing
Ok thanks. Try to remember I'm a newbee Wink so could you add simple instructions Smile

thnx again!
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Nov 10, 2011, 10:38
Post: #7
RE: brighten up a drawing
Well, if you have done the drawing with Gimp you're getting the hang of it (except for these pesky white pixels along line borders Smile )

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Nov 10, 2011, 10:51
Post: #8
RE: brighten up a drawing
That's because I scanned the basic picture from a (original scania-vabis) pink/orange coloured paper from the sixties. Then i selected the cooloured pieces and just deleted them. It might not be the best way but surely the fasted Tongue
I drew over a couple of lines to make al boxes seperate.
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Nov 10, 2011, 11:58
Post: #9
RE: brighten up a drawing
(Nov 10, 2011 10:51)Merijn Wrote:  That's because I scanned the basic picture from a (original scania-vabis) pink/orange coloured paper from the sixties. Then i selected the cooloured pieces and just deleted them. It might not be the best way but surely the fasted Tongue
I drew over a couple of lines to make al boxes seperate.
Yes, looked like a scan. If you still have the original, use Colors/color-to alpha to remove the background, and then use curves/levels on the alpha channel to make the almost transparent completely transparent (ie, almost black becomes full black). To paint an area, select with magic wand, add a layer below the lines, grow the selection one or 2 pixels, and fill. The outer pixels of your fill will be hidden by the line art in the layer above and there won't be uncolored pixels left.

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Nov 10, 2011, 12:12
Post: #10
RE: brighten up a drawing
Thanks!!!! I'll give it a go Smile
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Nov 10, 2011, 13:08 (This post was last modified: Nov 10, 2011 13:09 by ofnuts.)
Post: #11
RE: brighten up a drawing
- Download the attached file
- Open your original file in Gimp
- File/Open as layers the attached file
- Toggle the visibility of the new layer to see the subtle changes

The idea is that if what you are showing is a paint scheme, you can't alter the colors too much with reflections, so I am just adding a bit of shadowing on the "corners".

If that's OK, I'll do the writeup.


Attached File(s)
.xcf  Truck3D.xcf (Size: 2 MB / Downloads: 49)

[Image: 2Tvo0.png]

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Nov 10, 2011, 13:22
Post: #12
RE: brighten up a drawing
I like the shadows, very nice! So you can gladly post the writeup Smile

Is there a possibility to give it a little spark or shine or something?

The thing with the scan didn't really work in this case (I guess) because the background wasn't a smooth colour/surface as you can see here.
But i do get the message (Y) Thank you!!
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Nov 11, 2011, 13:44
Post: #13
RE: brighten up a drawing
I guess you did the 3d look with a square selection, quickmask en then gaussian blur then quickmask off, ctrl+i (invert selection) then paint the selection (black)

THNX!! Smile
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Nov 11, 2011, 14:07 (This post was last modified: Nov 11, 2011 14:09 by ofnuts.)
Post: #14
RE: brighten up a drawing
Not at all Smile A gray to white to gray gradient like this:

   

applied in multiply mode (.GGR gradient file attached).

Complete procedure:

- duplicate layer
- use usual procedure to remove background: want select the background, grow selection 2px, and color-to-alpha.
- alpha to selection
- using the freehand selector in intersect mode (ctrl+shift), round up the side view: only the non transparent stuff in the side view is selected.
- start new layer and draw gradient across side view
- repeat three steps above for front view, the final result should look like this:

   

- apply in multiply mode


Attached File(s)
.ggr  Truck-3D.ggr (Size: 352 bytes / Downloads: 46)

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Nov 11, 2011, 15:31
Post: #15
RE: brighten up a drawing
I guess I did it Smile but it got me wandering... how can you make sure that you get the same startin and ending point for the gradient but the other way around offcourse...??
I got this problem also when i was working on some roundings in de paint schemes, it was very difficult to get the left and right side the same. I was drwaing with a path but couldn't get it to "mirror"

maybe this should be a new question... if so, let me know
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