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`‘Vision Systems 101: An Introduction - Tetedyne DALSA Inc
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`imaging h Products ii Veion Systems ii Vision Systems wt
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`Vision Systems 101: An introduction
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`Vision systems are a primary consideration for any manufacturer who is looking to improve quatity orautomate production. Vision
`systems can be thought of as computers with eyes that can identify, inspect and communicate Crli.lCai information to eliminate
`cosliy errors, improve productivity and enhance customer satisfaction through the consistent dativery ofqual ity products. Primarily
`used foronline inspection. vision systems can perform complex or mundane repetitive tasks at high speed with high accuracy and
`high consistency. Errors or deviations in the manufacturing process are immedrateiy detected and relayed, allowing control
`modifications IO be made on the liy to reduce scrap and minimize expensive downtime. Vision systems are also deployed for non-
`inspection tasks, such as guiding robots to pick parts, place components, dispense tiquids or wetd seams.
`Vision systems come in all shapes and sizes to suit any application need, but they all have the same core elements. Every vision
`system has one or more sensors ti-iatcapture pictures for analysis and all include inspection software and a processing element
`that executes a user-defined program, or recipe, defining the inspection. Additionally. ail vision systems will provide some way of
`communicating results to complementary equipmentfor control oroperatcir monitoring That said, it is imporlantto know that there
`are signilicantarid importantdifferences between vision systems Ihatmake one more suitaoie over another for any given
`application it is equally important to know and appreciate the importance ofchoosing the optimal lighting and optics for thejob.
`Failure to do so may result ll"l unexpected fatse rejects, or even worse, false positives.
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`Visionsystems
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`Lighting Optics
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`Sensor Resolution Otherconsiderations
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`There are many variants ofvisiori systems on the market, butfor the purpose ct this tliiofiai we wili classify them all into two
`categories- those with a single sensor embedded (also known as smart cameras} and those with one or more sensors attached
`(muIti—camera vision systems). The decision to use one ofthe other is dependent not only on the number of sensors needed, but
`also on a number ofotheriactors inctuding perfomtance. cost and the environment in which the system needs to operate. Smart
`cameras. for example. are generaiiy designed to toterate harsh operating environments better than multi-camera systems.
`Similarly, multi-camera systems tend to be Fess costly and deliver higher performance for more complex applications.
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`Another way to differentiate the two classes of
`systems is to think in terms of processing
`requirements. For many applications. such as in car
`manufacturing, it is desirable to have multiple
`independent points ofinspectiori along the
`assembly line. Smart cameras are a good choice as
`they are self-contained and can be easily
`programmed to perform a specific task and modified
`if needed without affecting other inspections on the
`line. in this way processing is “distributed" across a
`number of cameras. Similarly, other parts of the
`production line may be better suited to a
`"centralized" processing approach. Forexample, it is
`not uncommon for final inspection of some
`assemblies to require 15 or 32 sensors. In this case,
`a multi-camera system may be betterauited as it is
`less costly and easierfor the operator to interact with.
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`Perhaps the most important consideration when selecting any vision system is soflware. You will need to make sure that the
`capabilities ofthe software match your apptication. programming and runtime needs. it they don't, you will find yourselt invesung
`more time and expense than you anticipated lI"l trying to conform the system to yourexpectation If you are new to machine vision
`or ifyour application requirements are straightforward. you should select software that is easy-Io-use (ie. doesn‘t require
`Droaramrnindi. includes core capabilities tie. pattern matching. feature findino. barcodei‘2D. OCR) and can interface with
`httpszrrwww.te|edynedaI5a.corniimaging’product$i'visiorrsystemsrvsititi
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`‘I12
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`Magna 2009
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`TRW V. Magna
`IPR2015-00436
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`Magna 2009
`TRW v. Magna
`IPR2015-00436
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`10.r‘6l'2015
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`Wsion Systems 101: An Introduction - Teledyne DALSA Inc
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`complementary devices using standard factory protocols. If your needs are more complex and you are comfortable with
`programming, you might look for a more advanced sottware package that offers additional flexibility and control. In eitl1er case,
`make sure that the software you choose is available across vision system platforms in case you need to migrate due to changing
`inspection requirements.
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`Selecting tine rightvision system requires some knowledge and experience. Our automation distributors will work with you to
`understand your requirements and recommend an appropriate system.
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`Teledyne DALSA isa global
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