- ...processing
- Special thanks to HP Labs, Kodak, ViA, and Kopin
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- ...return
- Strictly speaking the actual quantity
measured in early systems was
that of a single homodyne channel, which
only approximated energy. Later
in some systems energy was measured properly
with separate I and Q channels.
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- ...user-interface
- An apparatus that embodies a user-interface of
sufficient capability is said to meet the
`Existential Criterion'mannpt
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- ...proximity
- An apparatus that embodies a
user-interface of sufficient
and integral physical proximity
is said to meet the
`Eudaemonic Criterion'mannpt
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- ...constant
- An apparatus having both operational constancy
and interactional constancy is said to meet the
`Ephemeral Criterion'mannpt
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- ...processing
-
The term `WearComp' denotes a class of wearable,
tetherless, computational apparatus with visual display
meansmannieeecomputer
that meets the three criteria above.
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- ...project
-
For a detailed historical account of the WearComp project,
and other related projects,
seemannhistorical[15].
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- ...processing
- The first wearable computers equipped with multichannel
biosensors were built by the author during the 1980s
inspired by a collaboration with Dr. Ghista of McMaster
University. More recently, in 1995, the author
put together
an improved apparatus based on a Compaq Contura Aero
486/33 with a ProComp 8 channel analog to digital
converter, worn in a Mountainsmith waist bag,
and sensors from Thought Technologies Limited.
The author subsequently assisted
Healey in duplicating this system for use
in trying to understand human
emotionspicard97a.
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- ...dramatically
- Perhaps it may stop, or ``skip a beat'' at
first, but over time, on average, in the time
following the event,
experience tells us that our hearts beat faster
when frightened.
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- ...light
- This `lightspace' theory
was first written up in detail
in 1992mannlightspace.
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- ...scene
- first modeling the motion as a projective
coordinate transformation, and then estimating the
residual epipolar structure or the
residual epipolar structure or the like[33][34][35][36][37][38]
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- ...apparatus
-
The additional one-time download of a lens
distortion map, into WearComp's coordinate transformation
hardware, eliminates its lens distortion which would
otherwise be very large, owing to the covert, and
therefore small, size of the lens, and in
engineering compromises necessary to its design.
The Campbell method [42]
is used to estimate the lens distortion for this
one-time coordinate transformation map.
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- ...parameters
- published in detail inmanntip338
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- ...operation
- also known as a group
action or G-set [49].
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- ...head)
- The resulting collection of images may be characterized
by fewer parameters, through application of the
Hartley constrainthartley[27]
to an estimate of a projective coordinate transformations.
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- ...like
- For simplicity, all
these methods of automatic
exposure control are referred to
as AGC in this paper, whether or not they
are actually implemented using an Automatic
Gain Control (AGC) circuit or otherwise.
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- ...``group
- To be strictly mathematically correct,
the projective group is written (ax+b)/(cx+d), but
47#47 in practical engineering problems
(physically ``reasonable'' camera motion),
so we may divide by d.
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- ...model
- This approximate model
is used in the feedforward loop,
while the exact non-parametric model is
used in the feedback loop,
as described in detail
inmanntip338[15].
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- ...camera
- In some embodiments of WearComp, only a portion of
the visual field is mediated in this way.
Such an experience is referred to as
`partially mediated reality'mann260.
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- ...synesthesia
- Synesthesia [66]
is manifest as the crossing of sensory modalities,
as, for example, the ability (or as some might call
a disability) to taste shapes, see sound, etc..
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- ...transform
- The chirplet
transform [67] characterizes the
acceleration signature of Doppler returns,
so that objects can be prioritized, e.g. those
accelerating faster toward the wearer can be
given higher priority, predicting eminent
collision, etc..
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