The module allows you to annotate images, and works in combination with field_collection. The module defines a new field called 'Image Annotator' that can be linked to an image field, so you can add multiple markers to an image.
Features
Multiple markers.
Can be used as a field so you can add only markers.
Can be used inside a field collection so you can provide extra details (see screenshot).
For now the preview image of the image field has to use the same image style as the output. Warning: In the latest dev version we fixed this problem, but because of the fix all existing data will be useless! This is because the position and size of the markers are now calculated relative to the image size!
Only one image_annotator field per entity is supported.
Todo
Allow people to use a different image style in edit and view mode.
Allow people to use a static image without the need of uploading an image first.