Virtual Mirror for Fashion Retailing

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Presentation transcript:

Virtual Mirror for Fashion Retailing Computer Science 715 Andre Diekwisch Shawn Jiang Yoonyong Shin Brent Whiteley

Agenda Overview & Motivation - Shawn Jiang Related Work (Literature review) – Yoonyong Shin Problem & Solution Outline – Andre Diekwisch Conclusion & Future work - Brent Whiteley Q & A

Overview The Future of Shopping Why Kinect? Hardware SDKs Raw sensor stream Skeletal tracking Advanced audio capabilities

Problem Definition Kinect data is noisy and captured data might be incomplete or interfered Kinect skeleton tracking algorithm does not work well with complex poses Kinect motion capturing does not cope well with sudden movements Occlusion (degree of freedom is small)

Motivation Commercial interests Retailers and Customers have flexible choices Users can interact with Kinect more naturally Kinect can tolerate more complex inputs

Related Work “A Bayesian Framework for Human Body Pose Tracking from Depth Image Sequences.” by Zhu, Youding and Fujimura, Kikuo. (2010) “Suma, E.A., Lange, B., Rizzo, A., Krum, D.M. and Bolas, M.. FAAST: The Flexible Action and Articulated Skeleton Toolkit, Virtual Reality Conference (VR), 2011 IEEE, pages 247 -248, march 2011”

Iterative Closest Point for Human Body Pose Iterative Closest Point (ICP) approach Camera type : Swiss Ranger SR-3000  Characteristic High accuracy due to dense correspondence High rate of failure when body parts get close Majority of time, this approach cannot recover from tracking failure Approach Finding a point of joint by minimizing difference between clustered depth point. Iteratively revise the transformation Simple and fast Zhu, Youding and Fujimura, Kikuo. (2010)

Key point based method for Human Body Pose Camera type : Swiss Ranger SR-3000  Characteristic Robust and can recover from failure Accuracy depends solely on the image-based localisation accuracy of key-point (in other word not accurate enough Approach reconstruct poses from anatomical landmarks detected and tracked from depth image analysis Zhu, Youding and Fujimura, Kikuo. (2010)

Bayesian framework for Human Body Pose Developed by author that combining both key point and ICP algorithms Characteristic Robust and can recover from failure Accurate Slow speed Approach Integration of both key-point and ICP through error evaluation Zhu, Youding and Fujimura, Kikuo. (2010)

Human Body Pose Comparison Zhu, Youding and Fujimura, Kikuo. (2010)

Temporal Filtering For Occlusions by Kinect Overview Camera type Kinect Problem Missing data in depth image due to occlusion. Solution fill the occlusion depth data with estimation of data from neighbour (use filter such as gauss or median function)

Solution use existing Kinect tracking algorithm combine weighted data of two individually tracked skeletons (two Kinects) in respect of angle in respect of occlusion prevent unrealistic movement by applying physical constraints predict/approximate positions for occluded body parts use other/own tracking algorithm to improve results

Possible Limitations interference between Kinects false skeleton data when both Kinects are wrong

Subtasks evaluate OpenKinect SDK evaluate Microsoft SDK determine relevant physical body constraints create algorithm to recognize occlusion further literature research

Future work Virtual surgery Surgeons do not have to attend physically. Better game experience with better user experience Virtual mirrors through online shopping mall New socialising solution

References Zhu, Youding and Fujimura, Kikuo. A Bayesian Framework for Human Body Pose Tracking from Depth Image Sequences. Sensors, 10(5):5280?293, 2010. http://www.mdpi.com/1424-8220/10/5/5280/ ?doi:10.3390/s100505280 Suma, E.A., Lange, B., Rizzo, A., Krum, D.M. and Bolas, M.. FAAST: The Flexible Action and Articulated Skeleton Toolkit, Virtual Reality Conference (VR), 2011 IEEE, pages 247 -248, march 2011