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Add utility to convert classifications to detections #1842

Merged
merged 2 commits into from
Jun 9, 2022
Merged

Add utility to convert classifications to detections #1842

merged 2 commits into from
Jun 9, 2022

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ehofesmann
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Adds fiftyone.utils.labels.classifications_to_detections() converting a Classifications field into a Detections field where each classification corresponds to one detection with a bounding box surrounding the entire image ([0,0,1,1]), just like classification_to_detections()

Example:

import fiftyone.zoo as foz
import fiftyone.utils.labels as foul

dataset = foz.load_zoo_dataset(
    "open-images-v6",
    split="validation",
    max_samples=50,
    label_types=["classifications"],
)

foul.classifications_to_detections(dataset, "positive_labels", "dets")

print(dataset.first())
<Sample: {
    'id': '62a0b31a79f8993392beb816',
    'media_type': 'image',
    'filepath': '/home/eric/fiftyone/open-images-v6/validation/data/0001eeaf4aed83f9.jpg',
    'tags': BaseList(['validation']),
    'metadata': None,
    'positive_labels': <Classifications: {
        'classifications': BaseList([
            <Classification: {
                'id': '62a0b31a79f8993392beb815',
                'tags': BaseList([]),
                'label': 'Airplane',
                'confidence': 1.0,
                'logits': None,
            }>,
        ]),
        'logits': None,
    }>,
    'negative_labels': <Classifications: {'classifications': BaseList([]), 'logits': None}>,
    'open_images_id': '0001eeaf4aed83f9',
    'dets': <Detections: {
        'detections': BaseList([
            <Detection: {
                'id': '62a0b32479f8993392beba90',
                'attributes': BaseDict({}),
                'tags': BaseList([]),
                'label': 'Airplane',
                'bounding_box': BaseList([0.0, 0.0, 1.0, 1.0]),
                'mask': None,
                'confidence': 1.0,
                'index': None,
            }>,
        ]),
    }>,
}>

@ehofesmann ehofesmann added feature Work on a feature request core Issues related to Core features labels Jun 8, 2022
@ehofesmann ehofesmann requested a review from a team June 8, 2022 14:38
@ehofesmann ehofesmann self-assigned this Jun 8, 2022
brimoor
brimoor approved these changes Jun 9, 2022
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LGTM

@ehofesmann ehofesmann merged commit 925f51a into develop Jun 9, 2022
@ehofesmann ehofesmann deleted the cls-to-dets branch June 9, 2022 15:14
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@brimoor brimoor brimoor approved these changes

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