The main goal of the WIDER Person Challenge is to address the problem of detecting pedestrians and cyclist in unconstrained environments. Two main applications of pedestrian detection are taken into consideration, i.e., surveillance and car driving.
All the images are named after their number and have two sources. Images with a number from 1 to 10000 are collected from surveillance cameras, while the rest (from 10001 to 20000) are captured from cameras located on driving vehicles through regular traffic in urban environments.
We provide two categories for the training and validation data, which are walking pedestrian (as label 1) and cyclist (as label 2). Participants may use the two labels for reference during their training process. But in the test stage, we will make no differences between the two categories. In other words, participants only need to submit as the final results the bounding boxes and detection scores of all the pedestrians and cyclists they have detected in the images and do not need to distinguish their categories.
The images in the training and validation sets are provided with annotations that indicate the bounding box and label for each object. The format of the annotation file is:
[Image name] [label] [bounding box 1 (x y w h)] [label] [bounding box 2] ...
Note: We define w = xmax-xmin, h = ymax-ymin to avoid ambiguity.
We provide the bounding boxes of the ignore parts for the images in the surveillance section of the training the validation sets. But not all images in this section have ignores parts and the ignore parts do not have any labels. The format of the ignore-part files are very similar with the annotation files except for the labels:
[Image name] [bounding box 1 (x y w h)] [bounding box 2] ...
Note:We define w = xmax-xmin, h = ymax-ymin to avoid ambiguity.
Given the test images, participants need to find all the pedestrians and cyclists and submit their bounding boxes and scores in the images with the format specified below. The format of the submitted result file is:
[Image name 1] [score(confidence)] [bounding box 1 (x y w h)] [Image name 1] [score(confidence)] [bounding box 2 (x y w h)] ... [Image name 2] [score(confidence)] [bounding box 1 (x y w h)]
Note: The maximum size of the submission file for the server is 60M. Files larger than the specified size will not be accepted. In addition, the scores(confidence) in the submission file needs to retain 3 decimal places and the bounding boxes to retain 1 decimal place(same as the sample result file for the WIDER Pedestrian track).
Please check the terms and conditions for further details.
We will use the same metric as COCO detection evaluation metrics to evaluate the results. Average AP over the 10 IoU thresholds will determine the challenge winner. The Average AP is averaged over 10 Intersection over Union (IoU) thresholds: .50:.05:.95. We will delete the submitted objects whose overlap ratio with the ignore parts is more than 50% in the evaluation stage. Meanwhile, the ground-truth objects which are in the same conditions will also be removed. In other words, we only use the objects in the non-ignoring parts to compute the final Average AP. Please see the evaluation codes for more details.
Participants are recommended but not restricted to train their algorithms on the provided train and val sets. The CodaLab page of each track has links to the respective data. The test set is divided into two splits: test-dev and test-challenge. Test-dev is as the default test set for testing under general circumstances and is used to maintain a public leaderboard. Test-challenge is used for the workshop competition; results will be revealed at the workshop. When participating in the task, please be reminded that:
The datasets are released for academic research only and it is free to researchers from educational or research institutions for non-commercial purposes. When downloading the dataset you agree not to reproduce, duplicate, copy, sell, trade, resell or exploit for any commercial purposes, any portion of the images and any portion of derived data.
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Start: May 9, 2018, midnight
Description: In this phase, you can submit the result of validation set and see your rank in leaderboard.
Start: June 16, 2018, midnight
Description: In this phase, we will release testing set and the leaderboard will show the result of testing set.
July 19, 2018, 11:59 a.m.
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