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SF Bay Area 3D Vision & Kinect Hacking Message Board SF Bay Area 3D Vision & Kinect Hacking Discussion Forum › CHALEARN Gesture Challenge (Kaggle)

CHALEARN Gesture Challenge (Kaggle)

Karl A.
user 10675649
Sunnyvale, CA
Post #: 19­

One-shot-learning Gesture Recognition

Humans are capable of recognizing patterns like hand gestures after seeing just ONE example. Can machines do that too?

This challenge is one of four CHALEARN Gesture Challenge events


You will never need a remote controller anymore, you will never need a light switch. Lying in bed in the dark, you will point to the ceiling to turn on the light, you will wave your hand to increase the temperature, you will make a T with your hands to turn on the TV set. You and your loved ones will feel safer at home, in parking lots, in airports: nobody will be watching, but computers will detect distressed people and suspicious activities. Computers will teach you how to effectively use gestures to enhance speech, to communicate with people who do not speak your language, to speak with deaf people, and you will easily learn many other sign languages to comminicate under water, to referee sports, etc. All that thanks to gesture recognition!

Kinect (TM)

This is a challenge on gesture and sign language recognition using a Kinect camera. Kinect is revolutionizing the field of gesture recognition by providing an affordable 3D camera, which records both an RGB image and a depth image (using an infrared sensor). The challenge focuses on hand gestures. Applications include man-machine communication, translating sign languages for the deaf, video surveillance, and computer gaming. Check out some examples.


Every application needs a specialized gesture vocabulary. If we want gesture recognition to become part of everyday life, we need gesture recognition machines, which easily get tailored to new gesture vocabularies. This is why the focus of the challenge is on “one-shot-learning” of gestures, which means learning to recognize new categories of gestures from a single video clip of each gesture. The gestures will be drawn from a small vocabulary of gestures, generally related to a particular task, for instance, hand signals used by divers, finger codes to represent numerals, signals used by referees, or marchalling signals to guide vehicles or aircrafts.

Protocol sketch
This competition consists of two main components: a development phase (December 7, 2011 to April 6, 2012) and a final evaluation phase (April 7, 2012 to April 10. 2012):

* During the development phase of the competition, the participants build a learning system capable of learning from a single training example a gesture classification problem. To that end, they get development data consisting of several batches of gestures, each split into a training set (of one example for each gesture) and a test set of short sequences of one to 5 gestures. Each batch contains gestures from a different small vocabulary of 8 to 15 gestures, for instance diving signals, signs of American Sign Language representing small animals, Italian gestures, etc. The test data labels are provided for such development data so the participants can self-evaluate their systems. To evaluate their progress and compare themselves with others, they can use provided validation data, for which one training example is provided for each gesture token in each batch, but the test data labels are withheld. The prediction results on validation test data can be submitted on-line to get immediate feed-back. A real-time leaderboard shows participants their current standing based on their validation set predictions.
* During the final evaluation phase of the competition, the participants get to perform similar tasks as those of the validation data on new final evaluation data revealed at the end of the development phase. The participants have a few days to train their systems and upload their predictions. Prior to the end of the development phase, Kaggle will make available a software vault so the participants can upload executable code for their best learning system, which they will then use to train their models and make predictions on the final evaluation test data. This will allow the competition organizers to check their results and ensure the fairness of the competition. Note that participation is NOT conditiioned on submitting code or disclosing methods. See the rules for details. If any of the top ranking participants opted not to submit their learning system for verification, he/she will have to demonstrate the performance of his/her system in person on another verification set. Any statistically significant deviation between the performance on the final evaluation set and the verification set may result in disqualification.


This challenge is organized by CHALEARN and is sponsored in part by Microsoft (Kinect for Xbox 360). Other sponsors include Texas Instrument. This effort was initiated by the DARPA Deep Learning program and is supported by the US National Science Foundation (NSF) under grants ECCS 1128436 and ECCS 1128296 , the EU Pascal2 network of excellence. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
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