def import_frame_regions_json(regions_json, video, event_id):
"""
Import regions from a JSON with frames identified by immuntable identifiers such as filename/path
:param regions_json:
:param video:
:param event_id:
:return:
"""
video_id = video.pk
filename_to_pk = {}
frame_index_to_pk = {}
if video.dataset:
# For dataset frames are identified by subdir/filename
filename_to_pk = {
df.original_path(): (df.pk, df.frame_index)
for df in Frame.objects.filter(video_id=video_id)
}
else:
# For videos frames are identified by frame index
frame_index_to_pk = {
df.frame_index: (df.pk, df.segment_index)
for df in Frame.objects.filter(video_id=video_id)
}
regions = []
for k in regions_json:
r = Region()
if k['target'] == 'filename':
fname = k['filename']
if not fname.startswith('/'):
fname = '/{}'.format(fname)
pk, findx = filename_to_pk[fname]
r.frame_id = pk
r.frame_index = findx
elif k['target'] == 'index':
pk, sindx = frame_index_to_pk[k['frame_index']]
r.frame_id = pk
r.frame_index = k['frame_index']
r.segment_index = sindx
else:
raise ValueError('invalid target: {}'.format(k['target']))
r.video_id = video_id
r.event_id = event_id
r.region_type = k['region_type']
r.materialized = k.get('materialized', False)
r.full_frame = k.get('full_frame', False)
r.x = k['x']
r.y = k['y']
r.w = k['w']
r.h = k['h']
r.metadata = k['metadata']
r.text = k['text']
Region.objects.bulk_create(regions, 1000)
def import_region_json(r,
frame_index,
video_id,
event_id,
segment_index=None,
frame_id=None):
dr = Region()
dr.frame_index = frame_index
dr.video_id = video_id
dr.event_id = event_id
dr.object_name = r['object_name']
dr.region_type = r.get('region_type', Region.ANNOTATION)
dr.full_frame = r.get('full_frame', False)
if segment_index:
dr.segment_index = segment_index
if frame_id:
dr.frame_id = frame_id
dr.x = r.get('x', 0)
dr.y = r.get('y', 0)
dr.w = r.get('w', 0)
dr.h = r.get('h', 0)
dr.confidence = r.get('confidence', 0.0)
if r.get('text', None):
dr.text = r['text']
else:
dr.text = ""
dr.metadata = r.get('metadata', None)
return dr
def create_region(self, a):
da = Region()
da.video_id = self.video.pk
da.x = a['x']
da.y = a['y']
da.h = a['h']
da.w = a['w']
if 'frame' in a:
da.frame_id = self.frame_to_pk[a['frame']]
da.text = a['text']
da.metadata = a['metadata']
da.png = a.get('png', False)
da.region_type = a['region_type']
da.confidence = a['confidence']
da.object_name = a['object_name']
da.full_frame = a['full_frame']
da.event_id = self.event_to_pk[a['event']]
da.frame_index = a['frame_index']
da.segment_index = a.get('segment_index', -1)
return da
def import_regions_json(regions_json, video_id, event_id):
fname_to_pk = {
df.name: df.pk
for df in Frame.objects.filter(video_id=video_id)
}
regions = []
for k in regions_json:
if k['target'] == 'filename':
r = Region()
r.frame_id = fname_to_pk[k['filename']]
r.video_id = video_id
r.event_id = event_id
r.x = k['x']
r.y = k['y']
r.w = k['w']
r.h = k['h']
r.metadata = k['metadata']
r.text = k['text']
else:
raise ValueError
Region.objects.bulk_create(regions, 1000)
raise NotImplementedError
