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Perception as Analysis-by-Synthesi­s

Tejas Kulkarni is a PhD student at MIT in Josh Tenenbaum's lab and spent last summer working at Google DeepMind in London. His talk will be focused on his recent paper entitled Picture: A Probabilistic Programming Language for Scene Perception

Abstract:
Recent progress on probabilistic modeling and statistical learning, coupled with the availability of large training datasets, has led to remarkable progress in computer vision. An alternative to the empirical regression based approach, often termed as 'analysis-by-synthesis', instead relies on models or theories of the world, which can be used to interpret perceptual observations. How do we best design systems that can map raw scenes into structured representations? The process of computer graphics provides a flexible conceptual framework to go from structured scene descriptions to images. The problem of vision can be thought of as running this process backwards (therefore termed as 'inverse graphics'). In this talk, Tejas will argue for this perspective and showcase several probabilistic programs and deep neural network architectures on application areas including -- 3D body pose estimation, 3D face analysis, shape from images, and character recognition.

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  • Kevin K

    I sadly missed this due to family conflicts - is there a deck or video of the presentation available?

    2 · December 2, 2015

    • Anthony K. Y.

      I missed this too. Would be great if there is a video available!

      1 · December 2, 2015

    • Tejas K.

      Slides will be available from my side

      December 3, 2015

  • Greg

    Great meeting - thanks Tejas.
    It took a little while to get my head around model "dreaming". Positive step along the path to "thinking machines."

    1 · December 2, 2015

    • Tejas K.

      thanks a lot for coming!

      December 3, 2015

  • Tejas K.

    Thanks you so much for hosting me! It was really great to meet all of you. I will send the organizers my slide deck today. Let me know if you have any questions

    3 · December 3, 2015

  • Gordon T.

    it was very cool

    December 1, 2015

  • Chris W.

    Excellent

    December 1, 2015

  • Tracy Z.

    Would the talk start at 6pm or 6:30pm? Thanks!

    December 1, 2015

    • Gideon W.

      Probably sometime in between, if you get there at 6:30 I promise you will not have missed much.

      December 1, 2015

  • Tomas M.

    Hi, will the talk be recorded?

    November 30, 2015

    • Gideon W.

      Hey Tomas, we have only recorded a talk once (https://www.youtube.co...­) and find it often makes the speaker less comfortable, and creates unnecessary technical difficulties. Hope you can make it, otherwise we will be sure to make the content accessible.

      1 · December 1, 2015

  • David B

    Depending on where you're coming from, it might make a lot of sense to park at Alewife (end of the Red Line in Cambridge), Riverside (end of the Green Line D at Rte 128 and Rte 16 in Newton), or another T stop. Driving in Boston and parking at this time are both nasty.

    1 · December 1, 2015

  • Hafeez

    I would driving into Boston, any parking ideas ?

    December 1, 2015

    • Russ H.

      Most of the lots (e.g. off Summer St on the other side of the channel) have cheap evening rates. Check parkopedia.com. Allow 10-15 min to walk to Localytics.

      December 1, 2015

    • Hafeez

      Thank you Gentle men.

      December 1, 2015

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