SUNScholar/Digitisation
Contents
Objectives
The objective is to create the best possible copy of the original media in a digital format, be it print or old digital storage containers, using digital conversion equipment.
The resultant digital object must adhere to the following:
- Use an uncompressed bitstream for storage.
- Use open digital formats with no patent liability and which have open published standards.
For more information, see: http://en.wikipedia.org/wiki/Digitizing
Library Policy
Digitisation Equipment and Services
Digital Formats
Guidelines for scanners
| Media type | Resolution | Bit depth | Enhancements Allowed |
|---|---|---|---|
| Printed text | 300 dpi | Bitonal | Sharpening, descreening, cropping, deskewing, despeckling |
| Rare/ damaged printed text | 400 dpi | 8-gray or 24 colour | Contrast stretching; Minimal adjustments for tone and colour |
| Book illustrations | 400 - 600 dpi with enhancement | 8-gray or 24 colour; Bitonal | Contrast stretching; Minimal adjustments for tone and colour; Descreen/ rescreen, sharpen |
| Manuscripts | 300 - 500 dpi with enhancement | 8-gray or 24 colour | Contrast stretching; Minimal adjustments for tone and colour |
| Maps and other oversized items | 300 - 400 dpi | 8-gray or 24 colour | Contrast stretching; Minimal adjustments for tone and colour |
| Graphic Art | 400 - 600 dpi | 8-bit/ channel internal reduction | Contrast stretching; Minimal adjustments for tone and colour |
- Please note
- All archival material to be digitised in tiff format
- Tiff copy together with derivated png or any additional copies to be submitted to SUNScholar
- Document provenance metadata:
- dc.description.provenance e.g. Original scanned in at 600 dpi, 100% DigiBook 10000 RGB colour, downsized to 840 pixels in width, resolution 250. Web version done automatically by PhotoShop 7 software. Downloading time approx. 26 seconds. Date done March - April 2007.
Back to IR Help
