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Basic Resizing and Grid in GIMP

 
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Kassidy
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PostPosted: Tue Sep 09, 2008 1:37 pm    Post subject: Basic Resizing and Grid in GIMP Reply with quote

I've noted that there are people of many different levels of experience with regards to both beadspriting, image manipulation, etc, so I figured that at least I could help out with a couple of queries that have emerged regarding the manipulation of sprites to make them easier to bead.

Hope this is useful to some of you.

GNU Image Manipulation Program 2

Or GIMP for short, is a free, cross-platform image editor that is relatively easy to use, and will do pretty much everything you would expect from Photoshop, but without the cost. You can download this over at http://www.gimp.org . Just choose your operating system and get the relevant binary. If you're using Linux, you may already have it installed, or can get it from repos.

Resizing

First off, the sprite itself. I'm going to use the character Tumble from Seiken Densetsu: Children of Mana for the DS. The sprite is original size, 19x28 pixels, so she'll fit on a standard Hama board. To make her easier to work with, I can zoom in, but I want to double her size to make things easier on the grid we'll be looking at later on.



When resizing via Image > Scale Image, the main thing to remember is to not use interpolation. Works great on photos, but if you want to keep your sprites pixelated, you want to turn it off. I've compared the results here.



Also, you want to be resizing by factors of 2 (50% - 100% - 200% and so on) to also avoid distortion. These steps apply if you want to downsize a sprite because it already has squares that are 2x2 pixels (for example, those over at http://www.videogamesprites.net/) for whatever reason (pixel count, say).

Grids

Placing a grid on your image is easy in GIMP. To do so, first go to the View Menu and choose Show Grid. Then, go to Image menu, then Configure Grid. Depending on whether you have done the resizing of the image or not, you'll want to set the width/height accoringly. In this example, as we have resized the sprites to have each bead represented as a 2x2 pixel, we'll set the grid to 2, and set the grid type to Solid rather than crosshair.



As you can see, having resized the pixels to 2x2, we can distinguish between the transparent and solid pixels, as the transparent ones will be the only ones to have two shades of grey in them.

Indexed colours

In addition to all of the above, we can set the image mode to Indexed, which brings us two advantages. The first is that if we have configured a manual palette with our bead colours, you should be able to select it and have the image colours fall into the palette for easier identification. This can be foudn under Image > Mode > Indexed



Alternatively, you can use the optimal palette generated, and then use the Colour Map to change any individual colours you'd like to try out. This is also handy to get a count of how many colours you'll be dealing with. This can be found under Dialogs > Colour map

NOTE: Under the latest release of GIMP, 2.6, this can now be found under Windows > Dockable Dialogues > Colour map



While some of this is quite elementary, if you're just starting out hopefully some of this will be of assistance. If there are any areas which you would like to add to this, or feel need to be added, drop a comment below. Smile
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Last edited by Kassidy on Wed Oct 08, 2008 11:39 pm; edited 1 time in total
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PaperRockScisorz
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PostPosted: Wed Oct 08, 2008 12:33 am    Post subject: Reply with quote

Kassidy, I used this to find out the number of colors, but can't figure out how you got it to show you the colors. Whatever version I just downloaded doesn't have a dialogs option. =(
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Kassidy
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PostPosted: Wed Oct 08, 2008 12:38 am    Post subject: Reply with quote

I've just run it up on version 2.4.4 under Windows and it is there, under Dialogues > Colour map. But must remember to first change the image to Indexed rather than RGB (Image > Mode), otherwise it won't show anything.

What version are you running?
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PaperRockScisorz
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PostPosted: Wed Oct 08, 2008 12:43 am    Post subject: Reply with quote

2.6
I can't find the old one to download... ahhh help me!!
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Kassidy
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PostPosted: Wed Oct 08, 2008 12:53 am    Post subject: Reply with quote

I've installed 2.6 and it is in exactly the same place...
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PaperRockScisorz
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PostPosted: Wed Oct 08, 2008 12:53 am    Post subject: Reply with quote

Got it!! Thanks hippo whatever it's called downloads.

Now let's see if I can do this...
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PaperRockScisorz
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PostPosted: Wed Oct 08, 2008 12:55 am    Post subject: Reply with quote

I DID IT!!!!

You're my hero, Kassidy!!! Thank you, thank you, thank you!!!

Everyone should download this program and do this. Oh my life was just made so much easier!!!

WOO HOO!!!!

<3
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SerenaAzureth
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PostPosted: Wed Oct 08, 2008 6:07 pm    Post subject: Reply with quote

Hmm, I as well am having some trouble with this. I can't seem to get the color map to show up either and I have converted to index mode. What am I doing wrong?
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Kassidy
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PostPosted: Wed Oct 08, 2008 6:16 pm    Post subject: Reply with quote

Which step is failing, and what do you see?

I've also found that 2.6 for some odd reason will sometimes put the colour map under Windows > Dockable Dialogues.

I'm also annoyed with 2.6 today as it just lost me about 90 minutes worth of work. Arse biscuits!
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PaperRockScisorz
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PostPosted: Wed Oct 08, 2008 9:00 pm    Post subject: Reply with quote

See, Kass, I told you I wasn't crazy. It really wasn't there. Go back to 2.4.4, my friend!
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SerenaAzureth
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PostPosted: Wed Oct 08, 2008 11:15 pm    Post subject: Reply with quote

Dockable dialogues. There's where it is. Thank you. NOW it all makes sense. Very Happy
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Kassidy
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PostPosted: Wed Oct 08, 2008 11:41 pm    Post subject: Reply with quote

PaperRockScisorz wrote:
See, Kass, I told you I wasn't crazy. It really wasn't there. Go back to 2.4.4, my friend!


Still trying to figure out how on earth it displayed under the previous menu one boot-up, and different the next. Ho hum... And believe me, after losing a considerable amount of work this afternoon with GIMP crashing (serves me right for using it under Windoze), I'm tempted.

SerenaAzureth wrote:
Dockable dialogues. There's where it is. Thank you. NOW it all makes sense.


No probs. I've added a note to the tutorial to that effect. ;)
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PaperRockScisorz
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PostPosted: Thu Oct 09, 2008 12:01 am    Post subject: Reply with quote

Were you by any chance working on what we talked about last night? Because that would be really cool. Razz

Sorry you lost all that work though. That is NOT cool.
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Kassidy
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PostPosted: Thu Oct 09, 2008 12:50 am    Post subject: Reply with quote

Yep, that's the one.

http://arrakis.planetkass.net/node/145
http://arrakis.planetkass.net/node/144

Those are the results. The four-panel is the one that I had to redo. The end result was not as pleasing as the one lost, sadly.

Either way, I'm not entirely happy with either of these. Ho hum.
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PaperRockScisorz
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PostPosted: Thu Oct 09, 2008 12:52 am    Post subject: Reply with quote

EEE HEHE!!

I think they're cute!! <3

Popart does work on cats. HOORAY! Mythbusted!
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sixteenbiticon



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PostPosted: Tue Nov 11, 2008 2:49 am    Post subject: Reply with quote

Thank you for posting about this program. I've been using the color palette posted by DocOc to see how some of the larger sprite ideas I had would turn out. Really great. I might try that Behemoth yet!
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yyao12345
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PostPosted: Tue Nov 09, 2010 2:46 am    Post subject: Reply with quote

Thank you for the information, let me understand a lot
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