Menu:
A number of documents have been scanned and made available in the computers section of this site. This note describes how these documents were scanned.
Batch scanning can be done using scanimage on linux. For example:
scanimage --format=tiff --batch=page%d.tiff --batch-prompt -p -x 180 -y 230 --mode lineart --resolution 600will produce black and white 600dpi TIFF files named pagen.tiff where n is the document number. In batch-prompt mode, Scan image will prompt for each document to be placed on the scanner. When finished, Ctrl+D exits the program. The -p option provides progress while it scans, and the -x and -y options set the area to be scanned (180x230mm).
PDF files can be created using Eric Smith's tumble. This software takes 1bpp TIFF files as input and recompresses them using lossless Group 4 fax compression (ITU-T recommendation T.6) while putting them into a PDF file.