Complete Guide to Annotation Coordinate Conversion in Leaflet-IIIF
Overview This article explains how to accurately display annotation coordinates (xywh format) from IIIF (International Image Interoperability Framework) Presentation API v3 manifests on a map viewer using Leaflet-IIIF. This problem may seem simple at first glance, but accurate coordinate conversion is not possible without understanding the internal workings of Leaflet-IIIF. Background IIIF Manifest Annotation Format In IIIF Presentation API v3, the target area of an annotation is specified in xywh format as follows: ...