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Maestro ofers gestural interaction with the actual content o the slides. Blocks o

text can be highlighted by pointing to them with one hand. Presenters can also

selectively enlarge gures embedded alongside text. When enlarged a gure

occupies the entire screen.

!inally presenters can also author slides with hierarchical lists o bullets with child

bullets initially hidden. "his capability allows the presenter to cater the detail o the

presentation to the particular needs o the audience.

"echnology

Maestro relies on a single web camera or input and a data pro#ector or output.

"ogether these devices yield a highly portable presentation system that allows

presenters to use hand gestures to control their presentations. "his portability was

essential in allowing Maestro to be evaluated in real$world contexts such as multi$

use classrooms.

Maestro was developed with the expressed purpose o %uickly and inexpensivelyexploring the implications o gesture$based interactions with presentations. &everal

aspects o the system re'ect the act that Maestro is an early prototype(

!irst to simpliy hand tracking Maestro re%uires users to wear a mismatched pair o

brightly colored gloves )one red glove and one blue glove*. +and detection and

tracking can then be achieved using simple color thresholding techni%ues that are

computationally inexpensive.

&econd Maestro relies on a simple template$based approach or motion recognition,various eatures o the hand tra#ectories )e.g. start-end location path length

general direction o travel moment o inertia etc.* are measured and are tested

against manually tuned gesture templates.

lassroom /valuation


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0ter an iterative design process we evaluated Maestro in a two week eld study.

Maestro was used by one o the researchers to give 12 lectures to approximately

133 undergraduate students. "hese lectures were observed by a second researcher

who attended the lectures as an audience member. &tudents provided eedback

through a %uestionnaire distributed at the end o the study.

4uantitative 5esults

"he results o the eld study conrm that gestures that support interaction with

content appear to be the most efective and valued type o gestures in this context.

6n particular the ability to 7oom into gures and the ability to highlight talking

points were well received by audience members. 6n contrast navigation gestures

were perceived to be less e8cient than the use o a wireless remote.

4ualitative 5esults

"he two week eld study enabled us to identiy a set o emergent behaviors that

result when using gesture$based interaction with presentation systems. Most o

these behaviors highlight side efects that point to areas in need o uture research

or this problem space.

9rouping "hrough +ighlighting

Maestro implements a gradual ade$out o highlighted points enabling the

presenter to sweep his hand across a range o points highlighting them all at once.

"his mass$highlighting o bullet points was not planned or but became a welcome

emergent eature o the system.

!acing the &creen :ot the 0udience

"he presenter must be able to see the pro#ection screen to ensure that gestures are

perormed on their intended targets. 0s such the presenter ound himsel angling

his body away rom part o the class. "his pivoting was not always correctedleading the presenter to miss %uestions rom students not in his eld o view.

"he 0nchor Problem

;ne o the most visible efects o utili7ing gestural input was that it tended to


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"he !ield$o$view Problem

"he tendency or the presenter to anchor himsel next to the screen also made it

di8cult or

the presenter to see all o the content being pro#ected. 0ter advancing to the next

slide the presenter would sometimes need to step back =$> eet rom the screen to

be able to see all o the slide?s contents. !rom the audience?s perspective this

behavior caused an obvious break rom the presentation 'ow and could be

interpreted as the presenter being unprepared.

"he :o$'y @one Problem

"he design o the gesture recognition system also created a AAno$'y 7one?? $$ an

area o the room that the presenter could not enter without the risk o distracting

the audience. Maestro was designed with the assumption that the presenter

normally stands to the side o the pro#ected content only occasionally entering the

pro#ected content to selectively interact with elements in the slide. "his is a sae

assumption to make since the presenter typically wishes the audience to be able to

view the content without intererence. +owever ater the rst day o

lecturing the presenter ound himsel orgetting about the system and ully

immersing himsel in the act o lecturing. 0t times he would wander in ront o the

pro#ected content to address the class gesticulating as he did so. "his would lead to

constant activity in the slides behind him.

Maestro is mainly or presentations but can also be used to interace with games

webpages and much more

0B;" "+/ M0/&"5;C

"he Maestro 9esture ontrol 9love is a leading +M6 device technology with a

universal communications interace that easily integrates with wireless devices.

sing hand motion nger position and orientation users can control Wi!i or

Bluetooth enabled electronic devices. "he Maestro 9esture ontrol system also

comes with an air$keyboard and air$mouse interace. ustomi7e gestures to control

your avorite video games or Develop your robust applications using the Maestro?s

powerul &DE.

se with any smart Wi!i or Bluetooth Device.

omes with preloaded 9estures and &otware.


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Developers can integrate Maestro 9esture 9love in custom applications easilyC


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Bibliography

maestro gesture glove

http(--www.maestroglove.com-
https://hci.cs.uwaterloo.ca/research/maestrohttp://www.maestroglove.com/http://www.maestroglove.com/https://hci.cs.uwaterloo.ca/research/maestro

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