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Volume 29 Issue 9
Jan.  2011
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Hu Yan-Xiang, Yao Su-Ying, Xu Jiang-Tao. Research and Design on CIS Real-Time Multi-Capture[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2279-2282. doi: 10.3724/SP.J.1146.2006.00346
Citation: Hu Yan-Xiang, Yao Su-Ying, Xu Jiang-Tao. Research and Design on CIS Real-Time Multi-Capture[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2279-2282. doi: 10.3724/SP.J.1146.2006.00346

Research and Design on CIS Real-Time Multi-Capture

doi: 10.3724/SP.J.1146.2006.00346 cstr: 32379.14.SP.J.1146.2006.00346
  • Received Date: 2006-03-23
  • Rev Recd Date: 2006-08-25
  • Publish Date: 2007-09-19
  • Multi-capture composition is a valid method on extending the dynamic range of CMOS image sensor (CIS). In this paper, multi-capture composition using in real-time control is studied. By acquired the average value of all pixels, the number of saturated pixels and severe underexposure pixels, the control mode, the number of exposure, integrating time of each exposure and composition algorithm is determined in real-time. This method has been implemented in a 640480 CIS and simulated with FPGA. The simulated result indicates this method can extend the dynamic range effectively.
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  • Yang D and Gamal El. Comparative analysis of SNR for image sensors with enhanced dynamic range[C]. Proceedings of SPIE, San Jose, CA, USA, 1999, vol. 3649: 197-211.[2]Bo-Rong Lin, Shi-Yu Huang, and Cheng-Hsiao Lai, et al.. A high dynamic range CMOS image sensor design based on two-frame composition[C]. IEEE International SOC Conference, Portland, CA, USA, 2003: 389-392.[3]Chen-Ting and Gamal El. Optimal scheduling of capture times in a multiple capture imaging system[C]. Proceedings of SPIE, San Jose, CA, USA, 2002, Vol. 4669: 288-296.[4]Xinqiao Liu and Gamal El. Synthesis of high dynamic range motion blur free image from multiple captures[J].IEEE Trans, on Circuits and Systems I: Fundamental Theory and Applications.2003, 50(4):530-539[5]Yun Ho Jung, Jae Seok Kim, and Bong Soo Hur, et al.. Design of real-time image enhancement preprocessor for CMOS image sensor[J].IEEE Trans. on Consumer Electronics.2000, 46(1):68-75[6]Yang D, Gamal El, and Fowler B, et al.. A 640x512 CMOS image sensor with ultra-wide dynamic range floating-point pixel level ADC[J].IEEE Trans. on Solid-State Circuits.1999, 34(12):1821-1834[7]Liu X and Gamal El. Photocurrent estimation from multiple non-destructive samples in a CMOS image sensor[C]. Proceedings of SPIE, San Jose, CA, USA, 2001, vol. 4306: 450-458.[8]Handoko D, Kawahito S, and Takokoro Y, et al.. A CMOS image sensor for focal-plane low-power motion vector estimation[C]. Symposium of VLSI Circuits, Hawaiian, USA, 2000: 28-29.[9]Gamal El. High dynamic range image sensors[EB/OL]. www-isl.stanford.edu/~abbas/group/papers_and_pub/isscc 02_tutorial.pdf.
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