tutorial

Stack Bracketed Photos

2014-09-23
photography, image-processing, tutorial

Bracketed pictures are commonly taken to enhance the dynamic range (and sometimes the sharpness) of a photographic scene. The former type of bracketing is also known as exposure bracketing, and is what we will be dealing with in this article. There are many software products offering this functionality, including but not limited to Hugin, digiKam and Adobe Photoshop. A major drawback of these programs, however, is that they are designed mainly for graphical interface use; and will have you click through their interface for every set of bracketed images you wish to stack. ...

1v1 Risk Strategy

2014-09-18
statistics, gameplay, strategy, tutorial

Risk is a board game, variations of which can also be played online, as for instance on Dominating12, Conquer Club, or MajorCommand. Though the gameplay mechanism is consistent, there are many variations between these websites - occasionally extending even to the rule terminology. As a general reference therefor we would recommend the succinct Dominating12 terminology glossary. While we try to accommodate for rule variations in the following instructions, please be aware that they are meant specifically for 2-player (1v1) games (optimal gameplay is very different for multiplayer games). ...

Per-photo Model Release Form

2014-06-06
photography, LaTeX, legal, tutorial

Model release forms help photographers secure the freedom to publish and sell their photography work. One common issue with model release forms (especially in the context of informal photo sessions) is that they are tailored to the practice of professional photography, and commonly grant the photographer all rights to all pictures they may have taken of the model. While for professional models this might not be an issue, for relatives, friends, and acquaintances of the photographer such a commitment becomes daunting. ...

mkstage4 — Stage 4 Tarballs Made Easy

2014-05-18
FOSS, Gentoo Linux, Raspberry Pi, coding, scripting, ebuild, tutorial

Stage 4 tarballs are bootable, fully working, self-sufficient Gentoo Linux distributions. They include a complete Gento environment, which you can directly boot up and use. Stage 4 tarballs are very well suited for system backups or use cases where chrooting and emerging your basic system requirements can become very tedious. Situations in which stage 3 installation is difficult include: Installing Gentoo on machines with limited resources for compilation (e.g. many ARM family platforms) Installing Gentoo for machines which do not support standard live CD/USB distributions Background # Making a stage 4 tarball - while in principle as simple as tar-ing a Gentoo system - requires you to remember a long list of directories to exclude and a number of tar options. ...

Free and Open Science for Your Thesis

2014-02-24
FOSS, science, FOS, LaTeX, PythonTeX, dissertation, open science, tutorial

Topics such as open peer review, open data, and open notebook science are of increasing interest to the scientific community. Many of the concepts behind this new spin on science are rooted in the FOSS (Free and Open Source Software) world and draw credibility from its staggering success. As such, we would refer to the aforementioned set of trends in science as FOS (Free and Open Science). With so much talk about FOS going on - and even spilling over into high-profile editorials about publication review - it is distressing how little FOS is actually taking place. ...

How-To: NeuroGentoo

2013-10-02
Gentoo Linux, neuroscience, software, FOSS, tutorial

Gentoo # Gentoo linux is a modern, extremely flexible, and very transparent linux distribution. Among many other things it provides: Rolling releases (continuous versioning, in brief: no tedious “OS version updates” for you - ever) Building from source (custom geared for every machine - from ancient laptop to data-analysis power-box) Seamless support for live source packages (get that very latest version with that one new function that solves all your problems - directly from the source code upstream wrote 5 minutes ago! ...