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Notes

Page history last edited by juliano 12 years, 7 months ago
  1. There is no Homer installer for the Linux platform (yet). However, since all the programs used by the Homer script were originally developed for Linux, it should not be difficult for Linux users to install them on their machine. Besides, the Homer script is written using the Bash scripting language, so it should be fully compatible with Linux or other *NIX based operating systems. We still did not have the chance to test Homer on Linux, but if you are a Linux user, please consult the support page for details about the software required to execute the Homer bash script, and let us know if it works.
  2. The Homer installer is only compabile with Intel Macs. PowerPC Macs are not supported yet.
  3. This is important to know because the two sets of pictures require different actions: right-hand pages must be rotated 90 degrees clockwise, while left-hand pages 90 degrees counterclockwise.
  4. The reason is that, to reorder the set of scanned pages, the script gives each image file a number with an increment of two, so that the first half is given odd incremental numbers (0001, 0003, 0005, 0007, etc.), while the second half receives even numbers (0002, 0004, 0006, 0008, etc.). Therefore, if the total number is not even, the script may end up skipping some photos.
  5. “Libjpeg”, Wikipedia - http://en.wikipedia.org/wiki/Jpegtran
  6. “About | Scan Tailor” - http://scantailor.sourceforge.net/
  7. 300 x 300 DPI is simply a rule of thumb that work on most circumstances. If you want to obtain the exact figure you need to measure the physical dimensions of the area of which the picture was taken using a ruler, converting centimeters to inches; then divide it by the numbers of pixels to get the DPI (dots or pixels per inch). Mac users can use the built-in “Preview.app” and drag with the selection tool a box around one scanned page, which will show the exact number of pixels it contains. Let’s say the page is 20 cm long in the “real” world, while it is 3000 pixels long in the “digital” one – according to the resolution, the distance of the page from the lens and the zoom level of my digital camera. The “fixed DPI level” in this circumstance will be 3000 pixels / ( 20 cm = 7,87 inches ) = 381.
  8. Almost the same as Mac OS X. On Windows, we also created a batch file (.bat or .cmd) that calls the bash interpreter and runs the Homer bash script inside the Windows Command Prompt.

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