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adding utils unit tests; renaming import_export/ to intensive/
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""" | ||
Utils tests. | ||
| Copyright 2017-2020, Voxel51, Inc. | ||
| `voxel51.com <https://voxel51.com/>`_ | ||
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""" | ||
import os | ||
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import numpy as np | ||
import pytest | ||
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import eta.core.image as etai | ||
import eta.core.utils as etau | ||
import eta.core.video as etav | ||
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import fiftyone as fo | ||
import fiftyone.utils.image as foui | ||
import fiftyone.utils.video as fouv | ||
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@pytest.fixture | ||
def tmpdir(): | ||
with etau.TempDir() as _tmpdir: | ||
yield _tmpdir | ||
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def _write_image(image_path, size): | ||
img = np.random.randint(255, size=size + (3,), dtype=np.uint8) | ||
etai.write(img, image_path) | ||
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def _write_video(video_path, fps, size, num_frames): | ||
frame_size = (size[1], size[0]) | ||
with etav.FFmpegVideoWriter(video_path, fps, frame_size) as writer: | ||
for _ in range(num_frames): | ||
img = np.random.randint(255, size=size + (3,), dtype=np.uint8) | ||
writer.write(img) | ||
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def _make_dataset(source_path, dataset_dir, num_samples): | ||
ext = os.path.splitext(source_path)[1] | ||
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samples = [] | ||
for idx in range(num_samples): | ||
filepath = os.path.join(dataset_dir, "%06d%s" % (idx, ext)) | ||
etau.copy_file(source_path, filepath) | ||
samples.append(fo.Sample(filepath=filepath)) | ||
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dataset = fo.Dataset() | ||
dataset.add_samples(samples) | ||
return dataset | ||
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def test_compute_image_metadata(tmpdir): | ||
image_path = os.path.join(tmpdir, "image.png") | ||
dataset_dir = os.path.join(tmpdir, "images") | ||
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_height = 720 | ||
_width = 1280 | ||
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_write_image(image_path, size=(_height, _width)) | ||
dataset = _make_dataset(image_path, dataset_dir, num_samples=100) | ||
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sample = dataset.first() | ||
assert sample.metadata is None | ||
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dataset.compute_metadata() | ||
assert sample.metadata.height == _height | ||
assert sample.metadata.width == _width | ||
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dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.height == _height | ||
assert sample.metadata.width == _width | ||
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dataset.clear_sample_field("metadata") | ||
assert sample.metadata is None | ||
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dataset.compute_metadata(num_workers=1) | ||
assert sample.metadata.height == _height | ||
assert sample.metadata.width == _width | ||
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def test_compute_video_metadata(tmpdir): | ||
video_path = os.path.join(tmpdir, "video.mp4") | ||
dataset_dir = os.path.join(tmpdir, "videos") | ||
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_height = 720 | ||
_width = 1280 | ||
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_write_video(video_path, fps=5, size=(_height, _width), num_frames=30) | ||
dataset = _make_dataset(video_path, dataset_dir, num_samples=10) | ||
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sample = dataset.first() | ||
assert sample.metadata is None | ||
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dataset.compute_metadata() | ||
assert sample.metadata.frame_height == _height | ||
assert sample.metadata.frame_width == _width | ||
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dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.frame_height == _height | ||
assert sample.metadata.frame_width == _width | ||
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dataset.clear_sample_field("metadata") | ||
assert sample.metadata is None | ||
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dataset.compute_metadata(num_workers=1) | ||
assert sample.metadata.frame_height == _height | ||
assert sample.metadata.frame_width == _width | ||
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def test_transform_images(tmpdir): | ||
image_path = os.path.join(tmpdir, "image.png") | ||
dataset_dir = os.path.join(tmpdir, "images") | ||
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_write_image(image_path, size=(720, 1280)) | ||
dataset = _make_dataset(image_path, dataset_dir, num_samples=100) | ||
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sample = dataset.first() | ||
assert sample.filepath.endswith(".png") | ||
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foui.reencode_images(dataset, ext=".jpg") | ||
assert sample.filepath.endswith(".jpg") | ||
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foui.transform_images(dataset, ext=".jpg", force_reencode=True) | ||
assert sample.filepath.endswith(".jpg") | ||
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foui.transform_images(dataset, max_size=(256, 256), num_workers=1) | ||
dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.height <= 256 | ||
assert sample.metadata.width <= 256 | ||
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foui.transform_images(dataset, min_size=(512, 512), delete_originals=True) | ||
dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.height >= 512 | ||
assert sample.metadata.width >= 512 | ||
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def test_transform_videos(tmpdir): | ||
video_path = os.path.join(tmpdir, "video.avi") | ||
dataset_dir = os.path.join(tmpdir, "videos") | ||
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_write_video(video_path, fps=5, size=(720, 1280), num_frames=30) | ||
dataset = _make_dataset(video_path, dataset_dir, num_samples=2) | ||
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sample = dataset.first() | ||
assert sample.filepath.endswith(".avi") | ||
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fouv.reencode_videos(dataset) | ||
assert sample.filepath.endswith(".mp4") | ||
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fouv.transform_videos(dataset, reencode=True, force_reencode=True) | ||
assert sample.filepath.endswith(".mp4") | ||
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fouv.transform_videos(dataset, max_size=(256, 256)) | ||
dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.frame_height <= 256 | ||
assert sample.metadata.frame_width <= 256 | ||
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fouv.transform_videos(dataset, min_size=(512, 512), delete_originals=True) | ||
dataset.compute_metadata(overwrite=True) | ||
assert sample.metadata.frame_height >= 512 | ||
assert sample.metadata.frame_width >= 512 | ||
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if __name__ == "__main__": | ||
fo.config.show_progress_bars = False | ||
pytest.main([__file__]) |