• Calibration of Eccentric Power Refractor

    Eccentric power refractors need to be calibrated for accommodation and gaze position for individual participnats. Calibration however can be time consuming. We look at different conditions in which calibration is necessary or preferable. 

    View Project
  • Picture shows person pointing stylus to plastic model of a biological cell; webcam (not pictured) views model and stylus; computer, connected to webcam, announces "Nucleolus"


    CamIO (short for “Camera Input-Output”) is a system to make physical objects (such as documents, maps, devices and 3D models) accessible to blind and visually impaired persons, by providing real-time audio feedback in response to the location on an object that the user is touching.

    View Project
  • Characteristics of Smooth Pursuit in Individuals with Central Field Loss

    This project investigates the properties of smooth pursuit eye movements in individuals with macular degeneration.

    View Project
  • Choreographed and Orchestrated Video Annotation (COVA)

    Choreographed and Orchestrated media refers to a relatively new concept involving different aspects of a coordinated media presentation coming from different networked devices.

    View Project
  • Classification and Coding Projects

    One of Dr Colenbrander's persistent interests has been in classification and coding.  In the 1960’s he participated in the development of a new ophthalmic coding system in the Netherlands.

    View Project
  • Computer Vision Journal Club

    The Computer Vision Journal Club meets periodically to discuss papers on topics in computer vision, machine learning and other topics of interest such as assistive technologies for persons who are blind or visually impaired, dual sensory loss (hearing and vision loss), neuroscience and psychophys

    View Project
  • Experimental equipment: head-mounted eye-tracking goggles and head movement sensor

    Coordination of Eye and Head Movements in Central Field Loss

    This project investigates the interaction between central field loss (CFL) and vestibular function. Two-thirds of patients with CFL complain of vestibular problems, such as dizziness and instability, leading to a high incidence of potentially fatal acci

    View Project
  • Virtual aerial view of intersection area near a pedestrian's feet, reconstructed by Crosswatch algorithms


    Crosswatch is a smartphone-based system developed for providing real-time guidance to blind and visually impaired travelers at traffic intersections.

    View Project
  • Crowd-Sourced Description for Web-Based Video (CSD)

    The Descriptive Video Exchange Project (funded by the National Eye Institute of the National Institutes of Health, (grant # R01 EY020925-01) focuses on crowd-sourced techniques for describing DVD media.

    View Project
  • Parent with infant on lap reading a high contrast picture book

    CVI@SKI Meeting

    We are a Smith-Kettlewell Eye Research Institute sponsored, Blind Babies Foundation supported research advocacy group consisting of SKI researchers, select clinicians, teachers of the visually impaired, and parents of children with cerebral visual impairment.

    View Project
  • Black and white image of Golden Gate Bridge in fog. Text: Be descriptive, be brief, be part of the solution.

    Describeathon 2019 Announced!

    Join Describeathon 2019! Help make YouTube videos more accessible to blind viewers by adding your voice to this day of description.

    Use YouDescribe, our free web-based description tool, to describe the visuals of your favorite YouTube videos and have fun doing it!

    View Project
  • Test image

    Descriptive Video Exchange (DVX)

    This innovative technology will permit wiki-style crowd-sourcing of video description in a completely new way, opening the door to amateur description provided for any video content, and distributed to anyone, anywhere. This is all possible without modifying or redistributing the original video in any way.

    View Project