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Main - General Chat - Photoshop Cs4 and/or GIMP... New thread | New reply


Googie
Posted on 02-23-10 07:11 PM Link | Quote | ID: 127494


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I have these two programs installed on my PC, they're probably easy to use but they're hard for me for some odd reason it freakin' scares me. I seen You Tube videos of Cs4 in action but these people's tutorial video are so fast it's like they're on cocaine while using that program.

Does anyone here know how to use Phototshop Cs4 and/or GIMP can please lemme know how I can color my cartoons? I'd really appreciate it very much, whee! ^^;

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blackhole89
Posted on 02-23-10 08:38 PM Link | Quote | ID: 127500


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In GIMP,

- after completing your line art, create a new layer
- lock the line art layer
- set the new layer to multiplicative and select it
- draw colours to it

It should follow the same general scheme in other graphics programs with layering support.

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GreyMaria
Posted on 02-23-10 09:25 PM Link | Quote | ID: 127502

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It works the same in Photoshop (CS2, at least), with the added benefit of a reasonable GUI.

Though personally if I were to ever color things in I would color under the lineart. That's just me though.

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blackhole89
Posted on 02-23-10 09:44 PM Link | Quote | ID: 127504


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If the lineart is black, there is no difference between multiplying and "colouring below".

Proof:
Let's start off with the lineart being represented by black lines with a per-pixel alpha value, . Let be the greyscale (0..1) colour of a pixel on a lineart layer as used in multiplicative mode (i.e. after the lineart was rendered onto a white background). Then, by the formula for alpha blending, for each pixel,




If the colour layer is "below" the lineart, the lineart is instead alpha blended unto it, so, according to the alpha blending formula, the new pixel value is calculated as (with c being the colour of the colour layer)




If, instead, the lineart is rendered unto a white layer and the two are multiplied, we get

Inserting the previously derived formula for l,


It becomes immediately visible that





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Kawa
Posted on 02-24-10 04:18 PM Link | Quote | ID: 127548


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I'm saving this thread just for the sheer ridiculousness of your math dump.

I mean, I can hardly even read it. And that's not an invitation.

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blackhole89
Posted on 02-24-10 05:22 PM Link | Quote | ID: 127549


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That was a math dump?

You don't know what a real math dump looks like.

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Kawa
Posted on 02-24-10 05:23 PM Link | Quote | ID: 127550


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Wanna bet? I've talked to Cearn. You probably don't know him, but trust me, I've seen math dumps.

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MathOnNapkins
Posted on 02-24-10 11:07 PM Link | Quote | ID: 127572


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Are those supposed to be subscripts and superscripts on the same symbol? hate.

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blackhole89
Posted on 02-25-10 02:11 AM Link | Quote | ID: 127591


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Posted by Kawa
Wanna bet? I've talked to Cearn. You probably don't know him, but trust me, I've seen math dumps.

Notes I took at a seminar on p-adic numbers
bad LaTeX notes from an MO seminar in early 2008

Neither is even starting to scratch the surface. I'll see if I can take some representative pictures of my algebra lecture notes later.

If I was to post that on the board, that might qualify as a math dump.

MathOnNapkins: I only had to resort to them because the board eats apostrophes, thus rendering me unable to trivially prime my variables. I probably should fix that.

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Ailure
Posted on 02-28-10 01:12 PM (rev. 2 of 02-28-10 01:13 PM) Link | Quote | ID: 127775

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Posted by GreyMario
It works the same in Photoshop (CS2, at least), with the added benefit of a reasonable GUI.
Actually the current Photoshop UI is said to nto come from being designed much better, but mostly people being used to that kind of user interface. Supposedly Photoshop split things into multiple windows before, but had to put everything under a single window due to limitations of Windows 3.1 and then people simple just got used to it.

I'm not even sure what problem people have with the GIMP UI. Just take a few minutes to learn where everything is.

The only legit complaint I heard regarding GIMP is that it lacks CMYK support (at least last I checked). But that should only be a concern if you have one of those 10K+ USD color calibrated monitors and works with printing.

Edit: (Looking up there's GIMP plugins for CMYK).

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Ana72
Posted on 03-30-10 03:53 AM Link | Quote | ID: 129191

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hi.. I think tutorial could give you clearer explanation about this. You just have to be patient to be able to understand that. I have also learned from tutorials. Just pause it or go back to the previous if you can't catch it in a single snap.

Main - General Chat - Photoshop Cs4 and/or GIMP... New thread | New reply

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