Datasets:
image
image | faces
sequence | plates
sequence |
|---|---|---|
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[] | [] |
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[] | [] |
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[] | [] |
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Dataset Card for PP4AV
Dataset Summary
PP4AV is the first public dataset with faces and license plates annotated with driving scenarios. P4AV provides 3,447 annotated driving images for both faces and license plates. For normal camera data, dataset sampled images from the existing videos in which cameras were mounted in moving vehicles, running around the European cities. The images in PP4AV were sampled from 6 European cities at various times of day, including nighttime. This dataset use the fisheye images from the WoodScape dataset to select 244 images from the front, rear, left, and right cameras for fisheye camera data. PP4AV dataset can be used as a benchmark suite (evaluating dataset) for data anonymization models in autonomous driving.
Languages
English
Dataset Creation
Source Data
Initial Data Collection and Normalization
The objective of PP4AV is to build a benchmark dataset that can be used to evaluate face and license plate detection models for autonomous driving. For normal camera data, we sampled images from the existing videos in which cameras were mounted in moving vehicles, running around the European cities. We focus on sampling data in urban areas rather than highways in order to provide sufficient samples of license plates and pedestrians. The images in PP4AV were sampled from 6 European cities at various times of day, including nighttime. The source data from 6 cities in European was described as follow:
Paris: This subset contains 1450 images of the car driving down a Parisian street during the day. The video frame rate is 30 frames per second. The video is longer than one hour. We cut a shorter video for sampling and annotation. The original video can be found at the following URL: URL: paris_youtube_videoNetherland day time: This subset consists of 388 images of Hague, Amsterdam city in day time. The image of this subset are sampled from the bellow original video:
URL: netherland_youtube_video
The frame rate of the video is 30 frames per second. We cut a shorter video for sampling and annotation. The original video was longer than a half hour.Netherland night time: This subset consists of 824 images of Hague, Amsterdam city in night time sampled by the following original video:
URL: netherland_youtube_video
The frame rate of the video is 30 frames per second. We cut a shorter video for sampling and annotation. The original video was longer than a half hour.Switzerland: This subset consists of 372 images of Switzerland sampled by the following video:
URL: switzerland_youtube_video
The frame rate of the video is 30 frames per second. We cut a shorter video for sampling and annotation. The original video was longer than one hour.Zurich: This subset consists of 50 images of Zurich city provided by the Cityscapes training set in package leftImg8bit_trainvaltest.zipStuttgart: This subset consists of 69 images of Stuttgart city provided by the Cityscapes training set in package leftImg8bit_trainvaltest.zipStrasbourg: This subset consists of 50 images of Strasbourg city provided by the Cityscapes training set in package leftImg8bit_trainvaltest.zip
We use the fisheye images from the WoodScape dataset to select 244 images from the front, rear, left, and right cameras for fisheye camera data. The source of fisheye data for sampling is located at WoodScape's Fisheye images.
In total, 3,447 images were selected and annotated in PP4AV.
Annotations
Annotation process
Annotators annotate facial and license plate objects in images. For facial objects, bounding boxes are defined by all detectable human faces from the forehead to the chin to the ears. Faces were labelled with diverse sizes, skin tones, and faces partially obscured by a transparent material, such as a car windshield. For license plate objects, bounding boxes consists of all recognizable license plates with high variability, such as different sizes, countries, vehicle types (motorcycle, automobile, bus, truck), and occlusions by other vehicles. License plates were annotated for vehicles involved in moving traffic. To ensure the quality of annotation, there are two-step process for annotation. In the first phase, two teams of annotators will independently annotate identical image sets. After their annotation output is complete, a merging method based on the IoU scores between the two bounding boxes of the two annotations will be applied. Pairs of annotations with IoU scores above a threshold will be merged and saved as a single annotation. Annotated pairs with IoU scores below a threshold will be considered conflicting. In the second phase, two teams of reviewers will inspect the conflicting pairs of annotations for revision before a second merging method similar to the first is applied. The results of these two phases will be combined to form the final annotation. All work is conducted on the CVAT tool https://github.com/openvinotoolkit/cvat.
Who are the annotators?
Vantix Data Science team
Dataset Folder
The data folder contains below files:
images.zip: contains all preprocessed images of PP4AV dataset. In thiszipfile, there are bellow folder included:fisheye: folder contains 244 fisheye images in.pngfile typezurich: folder contains 244 fisheye images in.pngfile typestrasbourg: folder contains 244 fisheye images in.pngfile typestuttgart: folder contains 244 fisheye images in.pngfile typeswitzerland: folder contains 244 fisheye images in.pngfile typenetherlands_day: folder contains 244 fisheye images in.pngfile typenetherlands_night: folder contains 244 fisheye images in.pngfile typeparis: folder contains 244 fisheye images in.pngfile typeannotations.zip: contains annotation data corresponding toimages.zipdata. In this file, there are bellow folder included:
fisheye: folder contains 244 annotation.txtfile type for fisheye image followingyolo v1.1format.
zurich: folder contains 50 file.txtannotation followingyolo v1.1format, which corresponding to 50 images file ofzurichsubset.
strasbourg: folder contains 50 file.txtannotation followingyolo v1.1format, which corresponding to 50 images file ofstrasbourgsubset.
stuttgart: folder contains 69 file.txtannotation followingyolo v1.1format, which corresponding to 69 images file ofstuttgartsubset.
switzerland: folder contains 372 file.txtannotation followingyolo v1.1format, which corresponding to 372 images file ofswitzerlandsubset.
netherlands_day: folder contains 388 file.txtannotation followingyolo v1.1format, which corresponding to 388 images file ofnetherlands_daysubset.
netherlands_night: folder contains 824 file.txtannotation followingyolo v1.1format, which corresponding to 824 images file ofnetherlands_nightsubset.
paris: folder contains 1450 file.txtannotation followingyolo v1.1format, which corresponding to 1450 images file ofparissubset.soiling_annotations.zip: contain raw annotation data without filtering. The folder structure stored in this file is similar to format ofannotations.zip.
Personal and Sensitive Information
[More Information Needed]
Dataset Structure
Data Instances
A data point comprises an image and its face and license plate annotations.
{
'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=1920x1080 at 0x19FA12186D8>, 'objects': {
'bbox': [
[0 0.230078 0.317081 0.239062 0.331367],
[1 0.5017185 0.0306425 0.5185935 0.0410975],
[1 0.695078 0.0710145 0.7109375 0.0863355],
[1 0.4089065 0.31646 0.414375 0.32764],
[0 0.1843745 0.403416 0.201093 0.414182],
[0 0.7132 0.3393474 0.717922 0.3514285]
]
}
}
Data Fields
image: APIL.Image.Imageobject containing the image. Note that when accessing the image column:dataset[0]["image"]the image file is automatically decoded. Decoding of a large number of image files might take a significant amount of time. Thus it is important to first query the sample index before the"image"column, i.e.dataset[0]["image"]should always be preferred overdataset["image"][0]objects: a dictionary of face and license plate bounding boxes present on the imagebbox: the bounding box of each face and license plate (in the yolo format). Basically, each row in annotation.txtfile for each image.pngfile consists of data in format:<object-class> <x_center> <y_center> <width> <height>:object-class: integer number of object from 0 to 1, where 0 indicate face object, and 1 indicate licese plate objectx_center: normalized x-axis coordinate of the center of the bounding box.x_center = <absolute_x_center> / <image_width>y_center: normalized y-axis coordinate of the center of the bounding box.y_center = <absolute_y_center> / <image_height>width: normalized width of the bounding box.width = <absolute_width> / <image_width>height: normalized wheightdth of the bounding box.height = <absolute_height> / <image_height>- Example lines in YOLO v1.1 format
.txt' annotation file:1 0.716797 0.395833 0.216406 0.147222
0 0.687109 0.379167 0.255469 0.158333
1 0.420312 0.395833 0.140625 0.166667 `
Considerations for Using the Data
Social Impact of Dataset
[More Information Needed]
Discussion of Biases
[More Information Needed]
Other Known Limitations
[More Information Needed]
Additional Information
Baseline Model
Pretrained weight and demo of baseline model are available in self-driving-anonymization huggingface spaces
Dataset Curators
Linh Trinh
Licensing Information
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).
Citation Information
@article{PP4AV2022,
title = {PP4AV: A benchmarking Dataset for Privacy-preserving Autonomous Driving},
author = {Linh Trinh, Phuong Pham, Hoang Trinh, Nguyen Bach, Dung Nguyen, Giang Nguyen, Huy Nguyen},
booktitle = {IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)},
year = {2023}
}
Contributions
Thanks to @khaclinh for adding this dataset.
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