
     Image Analysis Software from the Institute of Ophthalmology

The Institute provides a number of software packages for digitisation,
measurement and display from images:

     DIGIT is used to digitise and measure objects traced on a
digitiser tablet or recorded in video with the Watford Video Digitiser.
A full range of measurements is provided e.g. counts, linear distances,
and area, perimeter, line length, maximum, minimum and mean Feret
(caliper) diameters, and shape factors of irregular objects. Objects are
recorded as files  which may be edited, displayed, zoomed and printed.
Measurements may be printed, saved, edited, and  displayed as histograms
with mean and standard deviation.  DIGIT disc, manual and connecting
lead: 150 (no VAT).

     3DIGIT provides 3D reconstruction of objects traced with DIGIT,
e.g. from microscope sections or map contours, with section alignment.
The reconstruction may be rotated around the x,y,z axes with control of
magnification, position and perspective, and depth shading or  red/green
stereo display. Reconstructions may be printed, or edited with a
digitiser art program. Measurements of surface area, volume and volume
density are made. 3DIGIT disc and manual: 50 (no VAT).

     DISTIT is used to quantify 2 dimensional arrays of objects recorded
with DIGIT (e.g. cells or particles in microscope sections) to show
whether they are regularly or randomly arrayed. DISTIT disc and manual:
50 (no VAT).

     DISMAP draws contour maps of the 2 dimensional distribution of
objects recorded with DIGIT, e.g. cells or particles across sections or
cell sheets. A digitiser art program is used to edit the maps. DISMAP
disc and manual: 50 (no VAT).

     GRAPHDATA is a general purpose package for rapid recording,
reading, display and editing of graphs using the digitiser tablet.
GRAPHDATA disc and manual: 30 (no VAT).

Institute of Ophthalmology,
Judd Street, 
London, 
WC1H 9QS. 

Tel.01-387 9621 extn. 224 (Dr B.P.Hayes).  
