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Below are some examples of an annotation plugin developed to allow overlays in OpenSeadragon.
Example #1
In this example, the initial gray image is pre-render to Red using an SVG color filter, I select the openseadragon canvas contained within the singleChan_contentDiv
$('#redChan_contentDiv .openseadragon-canvas').css('-webkit-filter','url(#f_to_red)')
Additional code demonstrates
dynamic filtering of images using client side filters-- which are quick and allow neat effects
OpenSeadragon Viewer With Gray Channel Converted to Red
MultiChannel Div with Dynamic Color
This is similar to above, but I added controls that allow me to pick the base color for the channel
This code has been developed by David A Gutman (@dgutman), Jake Cobb @jcobb, Lifan Zhang, e and Rich Stoner
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