Fig. 4. Image Annotation.
(A) Possible ways to provide scale information. (B) Features in images can be annotated with symbols, letters, or region-of-interest. (C, D) For advanced image publication, information on anatomical view or intervals in time-lapses may be required. Image Availability. (A) Currently, image data is often shared ‘upon request’. (B) More images along with the image metadata should be available for download in public databases, and in the future (C) also archived in dedicated, added-value databases, in which images are machine searchable or curated.