diatom.org
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About
our images
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Basic
serial-focus images |
Many of our images are serial-focus images, the display of which we developed specifically for this website.[1] Each is not a single image but rather a stack of images captured serially at different focal levels through the specimen or field. These serial-focus images are presented on our web pages to simulate how you would see the specimen or sample in our microscope as you focussed through it. |
Basic
full serial-focus images
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Dual zone images
(2) In very large (vertically) images we sometimes extend these focal zones to be up to 20% to maintain full user-access to both focal zones from the entire, or most of, the image. In these cases the arrowheads along the right image margin delimiting the focal zones have indicate this. |
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[1] A little more than a decade ago (c. 2000) David Mann (University of Edinburgh) developed with colleagues a web-usable visual display of serial focus images using a slider external to the image itself and a downloadable set of Fortran programs to run the image rollovers. [At present I am unable to relocate these pages and files on the web.] Inspired by what I saw there and then, I have tried to achieve the same results in our images using simple javascript code intrinsic to the html file, thus foregoing sliders, downloads and installations. Just move the cursor. [RKE] |
Composite
images
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Page
created 27 February 2015.
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Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Cite any and all works on this website as derived from www.diatom.org. |