Image Editing: Issues to consider for presentation.
Enhancing the online image
Example 1
Left - original scan @ 24-bit color, 600dpi, no
enhancements
Right - image retouched: converted to grayscale,
resized, increased contrast, sharpened, jpeg
Boy Scouts with sweaters.
From: Lynn Public Library,
Example 2
Left - original scan @ 24-bit color, 600dpi, no
enhancements
Right - image retouched: converted to grayscale, resized, increased
contrast, sharpened, jpeg
Harry Atwood flying first New England
Air Mail.
From: Lynn Public Library,
Example 3
Left - original scan @
24-bit color, 600dpi, no enhancements
Right - image retouched: resized, increased contrast, sharpened,
jpeg
St. Stephen's Memorial Episcopal
Church; exterior, colored.
From: Lynn Public Library,
Example 4
Original scanned @ 8-bit
grayscale, 600dpi
Image retouched: resized for readability (900 pixel wide), increased contrast & sharpened,
GIF format online (225 KB) / TIFF format master file (32 MB), ownership band
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Antiquarian Papers, July1882, Vol.03, No.33
Example 5
Antiquarian Papers as presented in the Northeast Massachusetts Digital
Library.
Multi-page Object Issues: page-turning capability, naming conventions, metadata
---
Antiquarian Papers, 1883, Vol.03, No.36, May
Ipswich Public Library,
Example 6
Antiquarian
Papers, Document
Description in the
Meta-data: titles, subjects, content
notes, digital reproduction information
---
Antiquarian Papers, 1883, Vol.03, No.36, May
Ipswich Public Library,
No matter what resolution the image is scanned at, the JPEG compression factor will effect the way an image looks on the screen.
JPEG Image scanned at 300dpi Compressed 20% File size: 531 KB |
JPEG Image scanned at 300dpi Compressed 90% File size: 45 KB |
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Links
- NMRLS Digitizing Checklist: 9 Easy steps!
- NMRLS Scanning Terminology
- NMRLS Scanning Tips
- NMRLS Digital Library Committee Imaging Standards
- Massachusetts Digital Commonwealth
updated: 6/2/08 - Scott
Kehoe, Technology Consultant, NMRLS | Made with 