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Original file line number | Diff line number | Diff line change |
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import codecs | ||
import json | ||
import os | ||
from subprocess import call | ||
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||
from PIL import Image | ||
from torchvision.datasets import VisionDataset | ||
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SUPPORTED_LANGUAGES = [ | ||
"ar", | ||
"bn", | ||
"cs", | ||
"da", | ||
"de", | ||
"el", | ||
"en", | ||
"es", | ||
"fa", | ||
"fi", | ||
"fil", | ||
"fr", | ||
"he", | ||
"hi", | ||
"hr", | ||
"hu", | ||
"id", | ||
"it", | ||
"ja", | ||
"ko", | ||
"mi", | ||
"nl", | ||
"no", | ||
"pl", | ||
"pt", | ||
"quz", | ||
"ro", | ||
"ru", | ||
"sv", | ||
"sw", | ||
"te", | ||
"th", | ||
"tr", | ||
"uk", | ||
"vi", | ||
"zh", | ||
] | ||
|
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CAPTIONS_DOWNLOAD_URL = "https://google.github.io/crossmodal-3600/web-data/captions.zip" | ||
IMAGES_DOWNLOAD_URL = ( | ||
"https://open-images-dataset.s3.amazonaws.com/crossmodal-3600/images.tgz" | ||
) | ||
OUTPUT_FILENAME_TEMPLATE = "crossmodal3600_captions-{}.json" | ||
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class Crossmodal3600(VisionDataset): | ||
def __init__(self, root, ann_file, transform=None, target_transform=None): | ||
super().__init__(root, transform=transform, target_transform=target_transform) | ||
self.ann_file = os.path.expanduser(ann_file) | ||
with codecs.open(ann_file, "r", encoding="utf-8") as fp: | ||
data = json.load(fp) | ||
self.data = [ | ||
(img_path, txt) | ||
for img_path, txt in zip(data["image_paths"], data["annotations"]) | ||
] | ||
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def __getitem__(self, index): | ||
img, captions = self.data[index] | ||
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# Image | ||
img = Image.open(img).convert("RGB") | ||
if self.transform is not None: | ||
img = self.transform(img) | ||
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# Captions | ||
target = [ | ||
captions, | ||
] | ||
if self.target_transform is not None: | ||
target = self.target_transform(target) | ||
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return img, target | ||
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def __len__(self) -> int: | ||
return len(self.data) | ||
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def _download_captions(out_path): | ||
os.makedirs(out_path, exist_ok=True) | ||
print("Downloading captions") | ||
call(f"wget {CAPTIONS_DOWNLOAD_URL} -O captions.zip", shell=True) | ||
call(f"unzip captions.zip -d {out_path}", shell=True) | ||
call("rm captions.zip", shell=True) | ||
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def _download_images(out_path): | ||
os.makedirs(out_path, exist_ok=True) | ||
print("Downloading images") | ||
call(f"wget {IMAGES_DOWNLOAD_URL} -O images.tgz", shell=True) | ||
call(f"tar -xzf images.tgz -C {out_path}", shell=True) | ||
call("rm images.tgz", shell=True) | ||
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def create_annotation_file(root, lang_code): | ||
if lang_code not in SUPPORTED_LANGUAGES: | ||
raise ValueError( | ||
f"Language code {lang_code} not supported. Supported languages are {SUPPORTED_LANGUAGES}" | ||
) | ||
data_dir = os.path.join(root, "xm3600") | ||
images_dir = os.path.join(data_dir, "images") | ||
if not os.path.exists(images_dir): | ||
_download_images(images_dir) | ||
captions_path = os.path.join(data_dir, "captions.jsonl") | ||
if not os.path.exists(captions_path): | ||
_download_captions(data_dir) | ||
with open(captions_path, "r", encoding="utf-8") as f: | ||
data = f.readlines() | ||
data = [json.loads(line) for line in data] | ||
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number_of_missing_images = 0 | ||
valid_images, valid_annotations, valid_indicies = [], [], [] | ||
for i, data_item in enumerate(data): | ||
image_id = data_item["image/key"] | ||
image_name = f"{image_id}.jpg" | ||
image_path = os.path.join(images_dir, image_name) | ||
if not os.path.exists(image_path): | ||
print("Missing image file", image_name) | ||
number_of_missing_images += 1 | ||
continue | ||
captions = data_item[lang_code]["caption"] | ||
txt = captions[0] | ||
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valid_images.append(image_path) | ||
valid_annotations.append(txt) | ||
valid_indicies.append(i) | ||
|
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if number_of_missing_images > 0: | ||
print(f"*** WARNING *** missing {number_of_missing_images} files.") | ||
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with codecs.open( | ||
os.path.join(root, OUTPUT_FILENAME_TEMPLATE.format(lang_code)), | ||
"w", | ||
encoding="utf-8", | ||
) as fp: | ||
json.dump( | ||
{ | ||
"image_paths": valid_images, | ||
"annotations": valid_annotations, | ||
"indicies": valid_indicies, | ||
}, | ||
fp, | ||
ensure_ascii=False, | ||
) |
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