Download to read offline
LectureSight is awesome and getting better!
- 1. || Stephen Marquard, Universityof Cape Town Stuart Phillipson, University of Manchester Vienna, February 2018 14/02/2018 1 LectureSight is awesome and getting better!
- 2. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 2 Overview LectureSight at University of Manchester LectureSight at University of Cape Town What’s new in LectureSight: • More committers • New documentation • Improved UI • Pan & Tilt operator • Easier calibration • Better tracking • Metrics • Galicaster plugin • Dashboard
- 3. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 3 LectureSight at University of Manchester (Demo video from Manchester)
- 4. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 4 LectureSight at University of Cape Town Around 18 larger venues equipped, in daily use Axis 5915 PTZ Cameras Logitech and Raspberry Pi overview cameras Some difficulties: • Overview cameras become misaligned • Overview cameras not positioned optimally • Calibration sometimes not accurate • “Distracted” tracking (presenter not in frame) • Poor performance in very low light conditions • USB/CAT5 extender and RPi camera issues • Some venues need tilting as well as pan
- 5. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 5 More committers • Ben Wulff (creator, now at Fraunhofer) • James Perrin (UoM) • Stephen Marquard (UCT) We will review and merge your pull request promptly
- 6. || 14/02/2018 6 Newdocumentation: docs.lecturesight.org
- 7. || 14/02/2018 7 ImprovedUI PTZ Camera Control now shows: • Overview image as background • PTZ Camera field of view • Position of the tracked object, target camera position and actual camera position Much easier to verify that calibration and configuration is correct.
- 8. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 8 Pan & Tilt Operator Contributed by Manchester Camera now tracks vertically as well as horizontally
- 9. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 9 Easier calibration Calibration uses spline interpolation and is also more accurate. Pick 3 to 5 fixed points on the overview image, and place markers on them in the Scene Profile Editor. Set camera presets to the same points in the Axis 5915 web UI. Restart LectureSight. Voila! You’re (mostly) done.
- 10. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 10
- 11. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 11 Better tracking Tracking persistence has been improved, so the tracker remains on an object for longer, and is therefore less distracted by transient movements elsewhere in the image (for example on projector screens, or encoding artefacts). Preference is given to tracked objects which have moved some distance since initial detection (real people)
- 12. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 12 Metrics LectureSight will create a metrics JSON file for each session (from start to stop of recording, if using the CA’s recording calendar) Use metrics to identify poor tracking performance. Use the Galicaster plugin to attach the metrics to the OC mediapackage.
- 13. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 13 Galicaster plugin Activates and deactivates LectureSight when recordings are started and stopped manually in Galicaster Attaches the LectureSight metrics file to the Opencast mediapackage.
- 14.
- 15. || 14/02/2018First nameSurname (edit via “Insert” > “Header & Footer”) 15 Get LectureSight http://docs.lecturesight.org/ http://bitbucket.org/bwulff/lecturesight/ (latest: 0.3-sprint) https://opencast.jira.com/projects/LS/issues Dashboard: https://bitbucket.org/cilt/lecturesight-overview Galicaster plugin: https://bitbucket.org/cilt/matterhorn_ansible/raw/master/templates/lecturesight.py