1. ARCHIVE (camera capture file)
2. MASTER (corrected & adjusted)
3. MR SID (wavelet compressed)
4. ‘LARGE’ (full-frame P’Point)
5. ‘SMALL’ (1/2 frame P’Point)
6. PREVIEW
7. THUMBNAIL
Full Plate ImageFull Plate Image File ExamplesFile Examples
1 of 3
Camera files are archived with acquisition settings
Master files are archived
Derivatives are backed up and transferred to AMF computer
Process overview for DM image capture
Digital Camera capture, direct to computer
Files transferred to BH
Camera named file referenced to AMF filename
Images acquired at 12 bits per channel
File derivatives are produced
MrSid Preview & Thumbnail for
database“Large” and “Small” for
downloading
AMF review output
Problem files re-processed
Images processed to “master” specification
Bridgehead Australia1/259 Glen Osmond Rd., Frewville. SA 5063Ph: 61-8 8379 5499 Fax: 61-8 8379 6933
2 of 3
File specifications for DM
Digital Camera capture file• 12 bits per channel• 3072 x 2049 pixels
File derivatives are produced
MrSid is produced:• Master file is sharpened and
then compressed to 20x, with ’normal’ settings in MrSID-Compress for RGB colour.
Generation of Master file:Acquired file is corrected for colour and brightness
range, trimmed and resampled to 3,000 pixels from top to bottom of plate. Horizontal dimension will be fixed for all plate files.
File is saved as TIFF, unsharpened, RGB
Preview & Thumbnail for database:
• Master is resampled for each Sharpening is applied to each set to best suit 24 bit colour monitor display.
• Files are compressed using JPG with a balance of speed and quality in mind.
“Large” and “Small” for downloading:
• Large file is 700 pixels high• Small file is 350 pixels high• Images are each generated
directly from the Master.• Sharpening and JPG
compression are optimised for PowerPoint display.
MrSid file:Placed on web-delivered
database for downloading and viewing on a local MrSid viewer.
Preview & Thumbnail:• Thumbnail for fast display in
search results.• Preview for verification of
result.
Large & Small files:• Either file would be chosen
following a search.• Large is suitable for full
screen PowerPoint use• Small is suitable for up to ½
screen PowerPoint use.
Bridgehead Australia1/259 Glen Osmond Rd., Frewville. SA 5063Ph: 61-8 8379 5499 Fax: 61-8 8379 6933
end