Create fiftyone.py
Browse files- fiftyone.py +46 -0
fiftyone.py
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import fiftyone as fo
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import fiftyone.utils.hf_hub as fouh
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class FashionopediaLoader(fouh.BaseHuggingFaceLoader):
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def load(self):
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if "name" in self.kwargs:
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self.kwargs.pop("name")
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dataset = fo.Dataset(name="fashionopedia-val", **self.kwargs)
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label_classes = self.hf_dataset.features['objects'].feature['category'].names
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samples = []
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download_dir = fouh._get_download_dir(self.repo_id)
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for i, item in enumerate(self.hf_dataset):
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image = item['image']
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basename = f"image_{i}"
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save_path = _save_PIL_image_to_disk(image, download_dir, basename)
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width, height = item['width'], item['height']
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objs = item['objects']
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categories = objs['category']
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bboxes = objs['bbox']
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dets = []
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for cat, bbox in zip(categories, bboxes):
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x0, y0, x1, y1 = bbox
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x0n, y0n, x1n, y1n = x0/width, y0/height, x1/width, y1/height
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fo_bbox = [x0n, y0n, x1n-x0n, y1n-y0n]
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label = label_classes[cat]
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dets.append(fo.Detection(label=label, bounding_box=fo_bbox))
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detections = fo.Detections(detections=dets)
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samples.append(fo.Sample(filepath=save_path, objs=detections))
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dataset.add_samples(samples)
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return dataset
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