Convert OMERO image Original metadata into a map annotation on the Image

original_metadata_to_map_ann.py

import omero
from omero.gateway import BlitzGateway

# See https://www.openmicroscopy.org/community/viewtopic.php?f=4&t=8268

imageId = 72416

conn = BlitzGateway("username", "password", host="localhost", port=4064)
conn.connect()
image = conn.getObject("Image", imageId)

map_ann_data = []

# Pick these items of metadata -> map annotation
attributes = ('Camera Name', 'CameraOffset', 'dPosName', 'sObjective')

# Load the 'Original Metadata' for the image
# ==========================================
om = image.loadOriginalMetadata()
if om is not None:
    key_values = om[1] + om[2]
    for key_value in key_values:
        if len(key_value) > 1 and key_value[0] in attributes:
            map_ann_data.append([key_value[0], str(key_value[1])])

# Create a 'map' annotation (list of key: value pairs)
# ====================================================
map_ann = omero.gateway.MapAnnotationWrapper(conn)
map_ann.setNs('original.metadata.from.script')
map_ann.setValue(map_ann_data)
map_ann.save()
image.linkAnnotation(map_ann)

conn.close()