ECVP 2015 Satellite Workshop

Following our series of popular technical seminars during 2014 devoted to practical aspects of vision research, this year we are offering a half-day workshop on Sunday 23rd August before the start of the main ECVP annual meeting. The 2015 workshop will provide a theoretical and practical introduction to the SID Information Display Measurements Standard (IDMS) and its application for vision research.

Using the techniques described in the IDMS, we aim specifically to help early-career vision scientists to understand how to characterise the display devices that they intend to use in their research laboratory.

The workshop is free and open to all registered ECVP attendees. Advance registration is not compulsory but highly recommended as space is limited. Note that those attending the theoretical session will be given preference if they want to attend the practical session.

The application of the SID Information Display Measurements Standard in vision research

The workshop provides a theoretical and practical introduction to the Information Display Measurements Standard (IMDS) and its application for vision research. A PDF version of the standard is available for free to download from the ICDM website. A printed version of the standard can be ordered from the SID website.

Sunday 23rd August 2015, 13:00-15:00, Room TBD, University of Liverpool

The theoretical session includes an introduction to the complete IDMS, followed by an in-depth discussion of the fundamental measurements that vision scientists should consider making in their own laboratories. The measurements discussed will include:

  • Spatial Uniformity: characterisation of the change in luminance or colour of the surface of a screen, including measurements of non-uniformity due to viewing angle.
  • Temporal Response: changes in the light output over short and long periods of time, i.e. for brief periods such as pixel response and flicker, or longer periods such as persistence and warm up time.
  • Motion Artifacts: measurements of motion blur caused by the persistence of an image for a significant fraction of a frame or longer, with the consequence of a perceived smear.
  • 3D Displays: methods and procedures for the characterisation of the display performance. Particular emphasis will be given to stereoscopic displays that require passive and active glasses.

Sunday 23rd August 2015, 15:00-17:00, Room TBD, University of Liverpool

The practical session will show attendees how to apply aspects of the IDMS by making measurements of their own laptop screen using a new free software Toolbox for MATLAB and instrumentation provided by CRS. The practical session will require attendees to bring a laptop with MATLAB and the latest release of the Psychophysics Toolbox installed (Psychtoolbox-3).

Benefits: Attendees will be able to:

  • Understand how light is emitted, transmitted or projected by display devices
  • Use appropriate methods and procedures to characterise the spatial and temporal properties of displays
  • Develop techniques to overcome artifacts inherent in current display technology

Intended audience: Those who wish to learn the measurements needed to present accurate stimuli, and the appropriate methods and procedures required to take those measurements.