Tech Briefs Magazine - August 2024 - 10
Event Sensors Are
Changing the
Paradigm in
Machine
Vision
T
he surge in content generated by cameras,
across consumer and industrial sectors, has
placed a burden on machines' capacity to
effectively acquire, process, and utilize visual
data in a practical and efficient manner. The
current challenges include: an overwhelming
amount of data being collected (much of which
is irrelevant for machines); insufficient processing
capabilities (especially in applications constrained
by size and power): and the demand
for real-time processing. Consequently, developers
of vision-enabled systems - spanning
from smartphones, wearables, smart homes,
IoT, systems, automotive technologies to industrial
automation equipment - are seeking
ways to transform the traditional approach to
vision sensing and data acquisition.
Having originated in providing images for human
consumption, camera technology's progress
over its history - primarily relying on frame-based
methods - is proving inadequate in meeting the
requirements of modern machine vision. For years,
machine vision has been reliant on visual information
acquired and structured for human interpretation: video
streams composed of sequential images captured by
an image sensor. Each image represents a static snapshot
at a particular moment lacking dynamic information. This
method of gathering visual data is prevalent in most machine
vision systems designed for monitoring changes and movements
within dynamic environments.
The predominant challenge arises when there is movement or
change in a scene, which is common in most machine vision applications,
and the inherent limitations of visual frame acquisition become
apparent. Regardless of the set frame rate, if a camera attempts to
capture a moving scene, it will consistently be inaccurate. Since different
parts of a scene typically exhibit varying dynamics simultaneously,
employing a single sampling rate to regulate pixel exposure across an
imaging array inevitably results in inadequate capture of these diverse
scene dynamics occurring concurrently.
10
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Table of Contents for the Digital Edition of Tech Briefs Magazine - August 2024
Tech Briefs Magazine - August 2024 - Intro
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