def image_detail(request, image_id):
"""
View for seeing an image's full size and details/metadata.
"""
image = get_object_or_404(Image, id=image_id)
source = image.source
metadata = image.metadata
# Get the metadata fields (including the right no. of keys for the source)
# and organize into fieldsets. The image detail form already has this
# logic, so let's just borrow the form's functionality...
imageDetailForm = ImageDetailForm(source=source, initial=model_to_dict(metadata))
fieldsets = imageDetailForm.fieldsets
# ...But we don't need the form's "Other" value fields.
# (Code note: [:] creates a copy of the list, so we're not iterating over the same list we're removing things from)
for field in fieldsets['keys'][:]:
if field.name.endswith('_other'):
fieldsets['keys'].remove(field)
detailsets = dict()
for key, fieldset in fieldsets.items():
detailsets[key] = [dict(label=field.label,
name=field.name,
value=getattr(metadata, field.name))
for field in fieldset]
# Feel free to change this constant according to the page layout.
MAX_SCALED_WIDTH = 800
if image.original_width > MAX_SCALED_WIDTH:
# Parameters into the easy_thumbnails template tag:
# (specific width, height that keeps the aspect ratio)
thumbnail_dimensions = (MAX_SCALED_WIDTH, 0)
else:
# No thumbnail needed
thumbnail_dimensions = False
# Next and previous image links
next_image = get_next_image(image)
prev_image = get_prev_image(image)
# Annotation status
if image.status.annotatedByHuman:
annotation_status = "Complete"
elif image_has_any_human_annotations(image):
annotation_status = "Partially annotated"
else:
annotation_status = "Not started"
# Should we include a link to the annotation area edit page?
annotation_area_editable = image_annotation_area_is_editable(image)
return render_to_response('images/image_detail.html', {
'source': source,
'image': image,
'next_image': next_image,
'prev_image': prev_image,
'metadata': metadata,
'detailsets': detailsets,
'has_thumbnail': bool(thumbnail_dimensions),
'thumbnail_dimensions': thumbnail_dimensions,
'annotation_status': annotation_status,
'annotation_area_editable': annotation_area_editable,
},
context_instance=RequestContext(request)
)
def annotation_tool(request, image_id):
"""
View for the annotation tool.
"""
image = get_object_or_404(Image, id=image_id)
source = image.source
metadata = image.metadata
# Get all labels, ordered first by functional group, then by short code.
labels = source.labelset.labels.all().order_by('group', 'code')
# Get labels in the form {'code': <short code>, 'group': <functional group>, 'name': <full name>}.
# Convert from a ValuesQuerySet to a list to make the structure JSON-serializable.
labelValues = list(labels.values('code', 'group', 'name'))
form = AnnotationForm(image=image, user=request.user)
pointValues = Point.objects.filter(image=image).values(
'point_number', 'row', 'column')
annotationValues = Annotation.objects.filter(image=image).values(
'point__point_number', 'label__name', 'label__code')
# annotationsDict
# keys: point numbers
# values: dicts containing the values in pointValues and
# annotationValues (if the point has an annotation) above
annotationsDict = dict()
for p in pointValues:
annotationsDict[p['point_number']] = p
for a in annotationValues:
annotationsDict[a['point__point_number']].update(a)
# Get a list of the annotationsDict values (the keys are discarded)
# Sort by point_number
annotations = list(annotationsDict.values())
annotations.sort(key=lambda x:x['point_number'])
# Now we've gotten all the relevant points and annotations
# from the database, in a list of dicts:
# [{'point_number':1, 'row':294, 'column':749, 'label__name':'Porites', 'label__code':'Porit', 'user_is_robot':False},
# {'point_number':2, ...},
# ...]
# TODO: Are we even using anything besides row, column, and point_number? If not, discard the annotation fields to avoid confusion.
need_human_anno_next = get_next_image(image, dict(status__annotatedByHuman=False))
need_human_anno_prev = get_prev_image(image, dict(status__annotatedByHuman=False))
# Get the settings object for this user.
# If there is no such settings object, then create it.
settings_obj, created = AnnotationToolSettings.objects.get_or_create(user=request.user)
settings_form = AnnotationToolSettingsForm(instance=settings_obj)
# Image tools form (brightness, contrast, etc.)
image_options_form = AnnotationImageOptionsForm()
IMAGE_AREA_WIDTH = 800
IMAGE_AREA_HEIGHT = 600
source_images = dict(full=dict(
url=image.original_file.url,
width=image.original_file.width,
height=image.original_file.height,
))
if image.original_width > IMAGE_AREA_WIDTH:
# Set scaled image's dimensions (Specific width, height that keeps the aspect ratio)
thumbnail_dimensions = (IMAGE_AREA_WIDTH, 0)
# Generate the thumbnail if it doesn't exist, and get the thumbnail's URL and dimensions.
thumbnailer = get_thumbnailer(image.original_file)
thumb = thumbnailer.get_thumbnail(dict(size=thumbnail_dimensions))
source_images.update(dict(scaled=dict(
url=thumb.url,
width=thumb.width,
height=thumb.height,
)))
access = AnnotationToolAccess(image=image, source=source, user=request.user)
access.save()
return render_to_response('annotations/annotation_tool.html', {
'source': source,
'image': image,
'next_image': need_human_anno_next,
'prev_image': need_human_anno_prev,
'metadata': metadata,
'labels': labelValues,
'form': form,
'settings_form': settings_form,
'image_options_form': image_options_form,
'annotations': annotations,
'annotationsJSON': simplejson.dumps(annotations),
'IMAGE_AREA_WIDTH': IMAGE_AREA_WIDTH,
'IMAGE_AREA_HEIGHT': IMAGE_AREA_HEIGHT,
'source_images': source_images,
'num_of_points': len(annotations),
'num_of_annotations': len(annotationValues),
},
context_instance=RequestContext(request)
)
