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I've been beginning to format my adventures for publishing, and the last hangup I have is that my maps are hand-drawn. I want to transfer them to digital format, but I'm limited to scanning them into PDF and attaching them to a document that I've worked hard to format into a professional looking adventure.

Using my home PC, while keeping a grid system for the dungeon maps, how can I transfer these over to a good format for the rest of my adventure? Looking for open source solutions, but your answer is in detailed, photo editing software, can you please link a good reference for learning material?

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There's no silver bullet

Map-making for “good” copies of maps is really a matter of redrawing them from scratch (digitally or physically), using the original design as a reference. There's no easy or automated way to transform a hand-drawn map into a “good” digital version.

Cartography (digital or analogue) is both an art and a technical skill, and like all arts and technical skills it is only achieved through years of practice.

Unfortunately, this means that there are only two ways to go from hand-drawn to publishing-quality:

  1. Develop one's own art and skill until it's at the desired level.
  2. Hire someone else's years of artistic and technical development.

Then the cartography artist redraws the map as something professional-looking.

A few years ago I had been practicing, for about a year, a particular style of finished-quality cartography inspired by Dyson Logos's professional work. The result is the map published in The Tomb of Nesta the Mischievous, a One-Page Dungeon Contest award-winner that can now be found in PDF on various sites and in the printed One Page Dungeon Contest 2012 Compendium.

That's what's possible with approximately a year of about an hour of practice about every day or two. (Mileage may vary of course, depending on existing skill levels and dedication!) If that's an acceptable investment, timeline, and outcome, then that's a route you could take.

Otherwise, a professional publisher is best served by hiring a professional cartographer that specialises in RPG maps, because maps can really make or break their adventure.

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  • \$\begingroup\$ Not the answer I wanted to hear, but I know it's right. I want to be where you are with publishing professional level adventures, so this is the path I'm going to take. \$\endgroup\$ – as.beaulieu Oct 26 '17 at 23:55
  • \$\begingroup\$ Now are you saying that you practiced hand drawing and then still scan it? Or you practiced that much with a digital program? \$\endgroup\$ – as.beaulieu Oct 26 '17 at 23:57
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    \$\begingroup\$ That was hand-drawn, redrawn, inked, scanned, and digitally cleaned up. The process is different when not starting from a scan, but digital map-making takes arguably even more skill to pull off. (My digital maps are atrocious.) \$\endgroup\$ – SevenSidedDie Oct 27 '17 at 0:11
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    \$\begingroup\$ Speaking as a professional industry cartographer, I thank you for this answer. It's like answering the question, "how can I get a good illustration of my character?" The only really good answer is either practice until you get good enough to do it, or hire someone who has. \$\endgroup\$ – keithcurtis Oct 27 '17 at 5:28
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Dyson Logos has a tutorial that touches briefly on scanning and touching up hand-drawn maps

The important part for you is this:

Finally with that map in hand, I would normally scan it for the first time (instead of having scanned it 4 times previous to finishing it. I drag it into either the Gimp or Photoshop and enhance the Brightness and Contrast (typically +40 Brightness, +60 Contrast)

As noted in Dyson's post, GIMP is the main open source Photoshop equivalent... And upping brightness/contrast will go a long way towards cleaning up (black and white) maps.

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I also use The GIMP, and prefer to use paths and layers. Paths give you a tons of editting options; selections, path stroking, and re-purposing. Here is a map of the world in Andrew J. Offutt's "War of the Wizards" series:

http://adventuresinnerdliness.net/wotw/ (you can click the map to enlarge it)

Everything is built on paths, so it is easy to do fills and varied line types.

As with above mentions, you have to learn to map, and learn your tool. I had some digital cartography and drafting at university, so The GIMP came naturally.

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  • \$\begingroup\$ "Lean on your tool" is a fair typo. I'm not sure I know how to use a pencil anymore. :-D \$\endgroup\$ – user40124 Oct 31 '17 at 14:26

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