@sepdek's

Setting up and testing OpenCV in MacOS – tested on Mountain Lion v. 10.8.3 (*) based on the blog notes of Tilo Mitra Installation: Download the latest version of OpenCV from SourceForge: http://sourceforge.net/projects/opencvlibrary/files/latest/download and unzip it. A folder is extracted with various files and folders Download cmake which is required in order to build and […]

Many different search options in google mail…I have to start writing them down ’cause I will definitely forget some of them… label:[LABEL] (abbr. l:[LABEL]) search for messages with a specified label. It can be extremely useful when searching for unread messages with the simple syntax: l:^u in:[SYSTEM-LABEL] search for messages in a specified gmail system […]

Some years ago I got my macbook air and in a flash of genius I got a 200GB USB disk to use as a backup disk (time machine backup disk). This was great and there where a couple of times it prooved really useful. Recently I wanted to detach this USB disk from its primary […]

Just faced a problem regarding setting the critical battery level on Windows 7. It got stuck at 98% and I could not set another value, although “low battery level” could be set to any value. Finally I came up with a solution using a command window: run cmd.exe using administrator priviledges and type the following […]

Even though all default settings include “utf8-general-ci” every newly created database keeps getting that “swedish” collation and character set! So one way to convert to utf8 is to go table by table and type the SQL command: ALTER TABLE dbase.table CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci where ‘dbase’ is the name of the database […]

Following the instructions shown in iClarified I have managed to perform a successful 3GS untethered jailbreak and unlock on Windows 7. The thing is that my iPhone’s week number is 43, which is in the range 40-45 of the “unknown” behavior. I already have modem firmware 06.15.00 from a previous jailbreak/unlock. So what I did […]

Just came back from the summer school Autonomous Micro Aerial Vehicles: Design, Perception, and Control held at ATH Zurich and organized by the EC FP7 project “sFly” (FP7-231855). A great experience and a chance to meet people and take a look at what is the state-of-the-art in small flying robots. With very important speakers like […]

Microsoft Photosynth is a set of tools for capturing and viewing panorama-like photos. The difference of a “synth” is that it consists of photos taken from various positions, in contrast with typical panoramas that require one fixed position for all photos of the collection. If consists of desktop applications, phone apps and online and social […]

Just completed successfully an update to the untethered iOS 4.3.2 with unlocking on an iPhone 3GS, by following these tutorials: iClarified for untethered jailbreaking* to iOS 4.3.2 using RedSn0w: http://iclarified.com/entry/index.php?enid=14563 I actually used a newer RedSn0w version either from this link or this link: redmondpie for fixed unlocking** using Ultrasn0w Fixer For 4.3.2: http://www.redmondpie.com/unlock-ios-4.3.2-on-iphone-4-3gs-with-ultrasn0w-fixer-for-4.3.2-how-to-tutorial/ Note: […]

This is how kids can do electrical circuits just by playing with dough. Here it is… the squishy circuits project page, with recipes of conductive and insulating dough along with example circuits and project videos.

Just returned from my first TEDx Thessaloniki event (although a regular online visitor to TED). The event’s site is here. Have you ever wondered why not? then you are probably a TEDx-ster. This is what TEDx Thessaloniki was about. The event was held at the Olympion Cinema at the center of Thessaloniki (Aristotle Square) and […]

Κύκλος μαθημάτων, σε συνεργασία με το IEEE Student Branch of Thrace, με αντικείμενο την τέχνη και την τεχνική, τη θεωρία και την πρακτική της πιο προσιτής πλέον τέχνης, της ψηφιακής φωτογραφίας, από τη γέννησή της έως την τελική της επεξεργασία. Πρόγραμμα μαθημάτων: 6 Απριλίου 2011, 15:00 – 17:00: Η ψηφιακή εικόνα 13 Απριλίου 2011, 15:00 […]