focus plus context screens patrick baudisch, nathan good, and paul stewart uist 2001, november 11 th...

Focus plus context screens

Patrick Baudisch, Nathan Good,and Paul Stewart

UIST 2001,

November 11th 2001

• Hardware– At least one hi-res display– At least one larger low-res display

• Software– scaling of the display content is preserved– resolution varies

<baudisch@parc.xerox.com>

Contents

• 1. What it is

• 2. How it works

• 3. What it is good for (video)

• 4. Software

• 5. Evaluation and conclusions

How to build it?

Setup

Seamless integration of displays

a b

Context

No reflections on focus screen

Focus

What is it good for?

• <Show video here>

How does it work?

The scaling software

• Display image on two display units of different resolution– Similar to two-headed display– but display units are overlapping– and one of them has to be scaled down

• (Related work “Flux capacitor”[Dr. Emmett Brown, 1985])

Linux/VNC

app

focus

contextinput

server

clip

scale

viewer

viewer

Image viewer

context

Photoshop

scale

ACDsee

ACDsee

.gif

.gif

mousefork

input

focus

Evaluation

focus plus context screen VisualizationSame # of pixels

fisheye

55

overview plus detail

44

Display technology

homogeneous resolution

44wall-size, hi-res display

44

Evaluation

• Field study– 12 professionals, 2 gamers– Nobody uses overview plus detail– A list of tasks for the experiments

• 1st exp: large static documents– Task completion: 21% and 36% faster

• 2nd exp: dynamic dual attention task– Error rate only 1/3 of two-monitor setup

What we learned

• We thought:Chip designers need it

• We learned:Real strength is dynamic content– Have unexpected context information– Two monitoring tasks at the same time

Try it out!Try it out!

• Demo: Tuesday 5.15Demo: Tuesday 5.15

END