def test_sample_comparisons_max_not_enough(self):
slices = [
ImageSlice('img1.nii.gz', 0, SliceType.SAGITTAL),
ImageSlice('img1.nii.gz', 100, SliceType.SAGITTAL),
ImageSlice('img2.nii', 1, SliceType.CORONAL),
ImageSlice('img3', 255, SliceType.AXIAL)
]
with self.assertRaises(AssertionError):
comparisons = sampling.sample_comparisons(slices, 100, 2)
def test_sample_comparisons_length(self):
slices = [
ImageSlice('img1.nii.gz', 0, SliceType.SAGITTAL),
ImageSlice('img1.nii.gz', 100, SliceType.SAGITTAL),
ImageSlice('img2.nii', 1, SliceType.CORONAL),
ImageSlice('img3', 255, SliceType.AXIAL)
]
comparisons = sampling.sample_comparisons(slices, 3, None)
comparison_count = len(comparisons)
self.assertEqual(comparison_count, 3)
def test_sample_comparisons_self_compare(self):
slices = [
ImageSlice('img1.nii.gz', 0, SliceType.SAGITTAL),
ImageSlice('img1.nii.gz', 100, SliceType.SAGITTAL),
ImageSlice('img2.nii', 1, SliceType.CORONAL),
ImageSlice('img3', 255, SliceType.AXIAL)
]
comparisons = sampling.sample_comparisons(slices, 3, None)
for co in comparisons:
self.assertNotEqual(co[0], co[1])
def create_comparison_session(dataset_name: str):
dataset = backend.get_dataset(dataset_name)
if dataset is None:
abort(400)
current_sessions = sessions.get_sessions(db.session, dataset)
label_session_count = len(current_sessions)
images = backend.get_images(dataset)
total_image_count = len(images)
form = CreateComparisonSessionForm(meta={'csrf': False})
comparison_sessions = sessions.get_sessions(db.session, dataset, LabelSessionType.COMPARISON_SLICE)
for sess in comparison_sessions:
form.comparisons.choices.append((str(sess.id), sess.session_name))
form.image_count.validators = [
ComparisonNumberRange(min=1, max=total_image_count,
message='Must be between %(min)s and %(max)s (the dataset size).')
]
if form.validate_on_submit():
if form.session_name.data in [se.session_name for se in current_sessions]:
form.session_name.errors.append('Session name already in use.')
elif form.comparisons.data == 'create' and form.min_slice_percent.data >= form.max_slice_percent.data:
form.max_slice_percent.errors.append('Max must be greater than min.')
else:
slice_type = backend.SliceType[form.slice_type.data]
if form.comparisons.data == 'create':
slices = sampling.sample_slices(dataset, slice_type, form.image_count.data, form.slice_count.data,
form.min_slice_percent.data, form.max_slice_percent.data)
if form.comparison_count.data is None:
comparisons = sampling.all_comparisons(slices)
else:
comparisons = sampling.sample_comparisons(slices, form.comparison_count.data,
form.max_comparisons_per_slice.data)
else:
from_session = sessions.get_session_by_id(db.session, int(form.comparisons.data))
comparisons = sampling.get_comparisons_from_session(from_session)
label_values = [v.strip() for v in form.label_values.data.split(',')]
sessions.create_comparison_slice_session(db.session, form.session_name.data, form.prompt.data,
dataset, label_values, comparisons)
return redirect(url_for('dataset_overview', dataset_name=dataset.name))
return render_template('create_comparison_session.html',
dataset=dataset,
label_session_count=label_session_count,
total_image_count=total_image_count,
form=form)