Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Scanning the shipping gallery


Published on

Presentation by John Hindmarch, a PhD student at University College London, given on 31 January 2013 at University College London

Published in: Education
  • Be the first to like this

Scanning the shipping gallery

  1. 1. Scanning the Shipping Gallery John Hindmarch , Scanlab and the Science Museum
  2. 2. The Shipping Gallery• The largest gallery in the Science Museum• Largely unchanged since the 1950s• Decommissioned in May 2012 to make way for a new exhibition opening in 2014Pictures courtesy Dave Patten,
  3. 3. The Project• The Science Museum wished to record and preserve the exhibition• Normal method would involve photography and potentially video, however…• Inspired by the work of Scanlab, the museum approached us about scanning the entire space
  4. 4. Scanning• We used a pair of Faro Photon terrestrial laser scanners• A rotating mirror sends out a laser beam, and sensors record up to 1,000,000 ‘reflections’ per second• Measures time it takes for reflected pulse to return to the scanner• Builds up a ‘point cloud’ – a 3D model of the environment• But – no colour, and lots of ‘shadows’
  5. 5. Colour?• To capture colour, a digital camera is attached to top of scanner• The camera takes a series of ‘panoramic’ photos• The images are projected on to the point cloud, giving each point a colour value
  6. 6. Processing• 275 individual scans, captured over five nights, each containing millions of points• 2 billion points overall• = 256Gb of data!• 16 weeks processing time: – aligning the scans – cleaning noisy data – colour correction• 7 minute video uses ~ 10% of the data and took 48 hours to render
  7. 7. Uses?– Video, with commentary recorded by the exhibition’s curator, to be placed online– Alongside more detailed 3D models that visitors can interact with– Detailed record of gallery space could be used for future exhibition planning– Dataset can be used in different ways as technology improves. A fully interactive (walk through) model?
  8. 8. Why?“We hope that archiving exhibitions digitally in thisway will prolong their legacy beyond their physical installation. As a digital record of the space and exhibits this model offers the potential for online versions to be created and interacted with by a much vaster public audience.” The Science Museum