Waching daily Sep 26 2018

access to online videos can be a big problem for people with

vision impairments. if a video doesn't have a clear description or captioning this can

create a barrier to access. This means that a person with a vision impairment

might not be able to access the same information a sighted person would such

as understanding how planets and moons move in the solar system.

In this work we present the haptic video player which enables non visual access to online

videos using wireless robots as tangible sprites. In the haptic video player the

robots are controlled using visual paths and optical codes displayed on the touchscreen.

The user can touch or hold the robot as it moves to get non visual

access to the motion of important objects as they move in the video.

haptic videos can be created using our gesture based authoring tool

the first thing we do is select a video to annotate we can do this by selecting

a local file or by providing a youtube link which is then downloaded and used

for the video

we start authoring by defining the start and end of our tangible annotation

we then select a robot and draw a stroke that the robot will represent.

we continue to draw a series of strokes representing the trajectory of the

object at any frame

Haptic Video Examples

let's say you have two baseballs (system says "loading please wait" as robots load into their starting positions)

system says: "camera: camera directly facing person on top of small wall. Scene objects: ball a..."

left and ball B right. Overall description: both balls are dropped from

the height of the wall ball a is tossed lightly while ball B is dropped."

video says: "let go of them at the same time from the same height but you toss ball A in such a way

that it ends up with some starting the vertical velocity with ball B is just

dropped in this case ball A will hit the ground first because you gave it a head start.

now what happens if you repeat the experiment but before" (System says"resetting please wait" as robots drive off the screen at the end of the annotation.

Now this time, you give ball A some horizontal velocity and just drop ball B straight down.

From Earth we see the planet's orbit edge-on that means

once per orbit it passes directly in front of its star this event is called

system says "loading please wait" as the robots load into their starting positions

camera: camera is viewing a satellite pass in front of a star.

Scene objects: star center, satellite left, brightness graph lower center.

overall description: as the satellite passes in front of the star the measured brightness lowers (end of system speaking).

A transit and when the planet transits the star it blocks a little bit of the

star's light and that means we can detect a dip in the star's brightness

and sure enough that dip was found HD 209 4 5 8 B was the first independent

confirmation of an exoplanet. (cut to wave example)

This red curved wave, this is a sine wave. you can also go ahead and look at the cosine

wave this is a basic behavior of a cosine wave and how it relates but just for this quick little lecture...

In this work we presented

the haptic video player and evaluated its ability to make content accessible in a user study with 7 individuals with vision impairments.

please see the paper for more details and thank you for watching