University of Coimbra - Herbarium of University of Coimbra

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Imaging

Image capture of herbarium specimens at COI uses either

HERBSCAN, with an inverted scanner using 600ppp. File Format: TIFF image file. The resulting file sizes are of 200MB for sheets 11x17in.
Digital camera in light tent. Resolution: 72 dpi; Dimension: 4672 x 3104 pixels; Colour Space: Adobe RGB (1998); Colour Depth: 24-bit ; File Format: JPEG image file. The resulting file sizes are c. 10MB.

In both cases the specimens are digitized with the (i) specimen barcode, (ii) measurement scale, (iii) Colour & Gray Scale Targets. The image file names are the barcode(s) of the specimen(s).