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HDR Sensors for Embedded Vision

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By Michael Tusch
Founder and CEO
Apical Limited

At the late-March 2012 Embedded Vision Alliance Summit, Eric Gregori and Shehrzad Qureshi from BDTI presented a helpful overview of CCD and CMOS image sensor technology. I thought it might be interesting to extend this topic to cover so-called HDR (High Dynamic Range) / WDR (Wide Dynamic Range) sensors. HDR and WDR mean the same thing –it’s just a matter of how you use each axis of your dynamic range graph. I’ll employ the common terminology "HDR" throughout this particular article.

I think that this is an interesting topic because many embedded vision applications require equivalent functionality in all real-scene environments. We know that conventional cameras, even high-end DSLRs, aren’t able to...