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Computer Vision for Electronics Manufacturing (Paperback, Softcover reprint of the original 1st ed. 1990)
Loot Price: R1,480
Discovery Miles 14 800
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Computer Vision for Electronics Manufacturing (Paperback, Softcover reprint of the original 1st ed. 1990)
Series: Advances in Computer Vision and Machine Intelligence
Expected to ship within 10 - 15 working days
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Total price: R1,500
Discovery Miles: 15 000
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DEFECT PROPORTION OF DETECTION INITIAL RATE DETECTION RATE
INSPECTOR 3 COMPLEXITY OF TIMES PAN OF PERFORMING o~
________________________ o~ ______________________ __ -;.
INSPECTION TASK -;. VISUAL INSPECTION Fagure 1. Trends in relations
between the complexity of inspection tasks, defect detection rates
(absolute and relative), and inspection time. Irrespective of the
necessities described above, and with the excep tion of specific
generic application systems (e.g., bare-board PCB inspection, wafer
inspection, solder joint inspection, linewidth measure ment),
vision systems are still not found frequently in today's
electronics factories. Besides cost, some major reasons for this
absence are: 1. The detection robustness or accuracy is still
insufficient. 2. The total inspection time is often too high,
although this can frequently be attributed to mechanical handling
or sensing. 3. There are persistent gaps among process engineers,
CAD en gineers, manufacturing engineers, test specialists, and
computer vision specialists, as problems dominate the day-to-day
interac tions and prevent the establishment of trust. 4. Computer
vision specialists sometimes still believe that their contributions
are universal, so that adaptation to each real problem becomes
tedious, or stumbles over the insufficient availabIlity of
multidisciplinary expertise. Whether we like it or not, we must
still use appropriate sensors, lighting, and combina tions of
algorithms for each class of applications; likewise, we cannot
design mechanical handling, illumination, and sensing in isolation
from each other.
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