Information about my software projects and articles on various computer related topics, including but not limited to HTML/CSS, web development, CMS systems, Xaraya CMS, Commodore 64, IDE64 and OpenMoko.
There are many challenges with my DIY bookscanner. I plan to document them sometime... The biggest modification was to replace the plexi glass with the top part of a scanner, because the plexi was very much scratched after a few books. Spreading the light with a semi-transparent cover near to the lamp was also necessary.
Most annoying of all problems was the barrel distortion of the camera. This made the whole equipment no competition to the flatbed scans of old books that are already scanned, that I also plan to scan to improve quality.
I've added some improvements to the openstretmap.hu website:
And of some minor improvements, mainly in usabilty of search box, and updated street autocomplete database.
To explain this book scanner idea in a few words, compared to traditional flatbed scanners or special flatbed book scanners:
There is an excellent community for building home made book scanners. By following the guides on diybookscanner.org it's easy to build your own scanner, that can scan a 300 pages book in 30 minutes. After 1.5 hours postprocessing work (in ScanTailor) you'll have very good black & white TIF images, that are straight, cleaned from noise, well readable. (No OCR or single-file conversion is included in this time frame.)
Have you ever had the problem that your camera's date was misset or reset, so all your EXIF and file dates were broken?
In this case you need to adjust the date in several images and preferably alter the file date accordingly. This is much easier than you thought, two simple commands using Linux tool exiv2.
I've updated the openstreetmap.hu website with some new features and new page layout. New features inlcude:
The www.openstreetmap.hu domain was occupied by an empty HTML file for years. Recently I discovered it is free, so registered it immediately. Let's see if someone will complain.
Update: The old owner of the domain is happy with the new site. :-)
With help of an OSM-JS professional, we got the new site up & running in a few days - thank you mate!
Starting any Firefox bookmark or bookmarklet by a hotkey is very easy. To efficiently use Hashapass on password fields a keyboard shortcut is quite handy.
(Hashapass is a tool to enhance password security by generating random strong passwords to your various logins, based on a master password and a parameter.)
My new "C64 XLFiles" project hosts big collections of Commodore 64 games, demos and magazines for download. Every archive contains files that are directly usable on a C64, no need for futher file conversion or extraction.