Real-time implementation of single-shot passive auto focus on DM350 digital camera processor

Mark Gamadia; Nasser Kehtarnavaz

doi:10.1117/12.806183

5 February 2009 Real-time implementation of single-shot passive auto focus on DM350 digital camera processor

Mark Gamadia, Nasser Kehtarnavaz

Proceedings Volume 7244, Real-Time Image and Video Processing 2009; 724408 (2009) https://doi.org/10.1117/12.806183
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

With the introduction of high mega-pixel image sensors and large focal length lenses in today's consumer level digital still cameras, single-shot passive auto-focus (AF) performance in terms of speed and accuracy remains to be a critical issue among camera manufacturers. To address the AF performance issue, this paper covers the real-time implementation of a previously developed modified rule-based single-shot AF search method on the Texas Instruments TMS320DM350 processor. It is shown that a balance between AF speed and accuracy is needed to meet the real-time constraint of the digital camera system. Performance results indicate that this solution outperforms the standard global search method in terms of AF speed and accuracy.

Citation Download Citation

Mark Gamadia and Nasser Kehtarnavaz "Real-time implementation of single-shot passive auto focus on DM350 digital camera processor", Proc. SPIE 7244, Real-Time Image and Video Processing 2009, 724408 (5 February 2009); https://doi.org/10.1117/12.806183

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