Computer graphics: programatically create duotone (or separations)

Posted by TarGz on Stack Overflow See other posts from Stack Overflow or by TarGz
Published on 2010-03-14T14:01:40Z Indexed on 2010/03/14 14:05 UTC
Read the original article Hit count: 286

Filed under:

graphics

|

printing

There are special kind of images called "duotone" which have just two channels. It is mostly used when you want to achive higher quality reproduction - have a printing press with two colors (black , gray).

My question is, I have normal gray-scale image, how to convert it to duotone?

I know I can tweak the curves in Photoshop - this is not what I'm asking, rather than how to do it programmatically? Perhaps there is a library which can do just that? What about "dot gain compensation"? "Total ink coverage"?

© Stack Overflow or respective owner

Related posts about graphics

Low graphics performance with Intel HD graphics

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
hey, my laptop should be capable of running some games fine but doesn't. Examples are egoboo and tome. http://www.ebuyer.com/product/237739 this is my laptop. I tried the gears test and i only get 60 FPS, on IRC they said thats a big issue and should try the forums. I am using Ubuntu 11.04 and was… >>> More
Graphics card not working but integrated graphics is working

as seen on Super User - Search for 'Super User'
I have a PCIe Geforce 6600 that I've been using in my PC for a couple years now without problems. Recently though I've not been using the PC and had it unplugged. When I when to use it again I accidentally plugged in the monitor to the VGA port for the integrated graphics instead of the 6600 card… >>> More
how to use my radeon 6950 graphics card instead of Intel Graphics 4000

as seen on Super User - Search for 'Super User'
I have just recently put my build together, and I have installed my graphics card. The problem is that when i look at my computer's display it is saying that I am using the intel graphics that came with my CPU. Is there a way that i can get the Radeon graphics to run instead? Also, I tried plugging… >>> More
ATI graphics card overriding onboard Intel graphics

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have an ATI graphics card with an AGP connection and a DVI port, and an Intel graphics processor on the motherboard with a VGA port. I have two monitors. When the graphics card is unplugged, I get this from lspci: 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller… >>> More
Gnome 3 freezes on logon on samsung RV 509

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a Samsung NP-RV509 A0FIN and I tried to install GNU/Linux with gnome 3.2 on it. I tried Fedora 16, Ubuntu 11.10 and Linux Mint 12 RC, but with no success. All of these freezes upon login into gnome shell. I think it is the problem with graphics driver, so I tried xorg-edgers ppa on my last… >>> More

Related posts about printing

Problem printing google maps printing and using 'page-break-before' in IE8

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm having an annoying problem trying to get an html page with a google map on it to print correctly, I have a google map with an <h2> above it all wrapped in a div and the div is set to 'page-break-before:always;' in the css so that the map and its heading always sits on a new page. The… >>> More
Printing using full page (bypassing hardmargins/printing full bleed/borderless)

as seen on Stack Overflow - Search for 'Stack Overflow'
Is it possible to override printer hardmargins and use all of the page when printing a document programmatically with .NET? >>> More
Printing an external file in its own printing routine

as seen on Stack Overflow - Search for 'Stack Overflow'
I basically have an application that generates reports in a .html file, I use a .html file for the ease of making tables and formatting text. Now I would like to introduce a way of printing the reports from my program. Because I use a .html file, the formatting would not the correct if I was to print… >>> More
Network printing -- setting up and printing over network using Mac OS X

as seen on Super User - Search for 'Super User'
I've connected a USB printer to a Mac OS X (10.4) machine -- this computer is connected to a network with a registered IP address -- and enabled sharing through the System Preferences setting (under "Shared" and "Print & Fax". Is this printer shared through the Bonjour or CUPS protocol (does it… >>> More
LPR printing in Ubuntu

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I'm trying to set up printing to a networked LPR printer, but I can't seem to make it work. The connexion information that IT gives is: Print Spooler: printing.domain.edu Printer Name: PrinterName Print port: 515 Bidirectional: Disabled It's an HP LaserJet p4015x, and I'm using the "HP LaserJet… >>> More