I apologize that this will be a repeat message for some of you. We just transitioned the colloquium list to '@engr' - today's should be the only repeat.
In addition to our Thursday colloquiums at 4pm, we have four others coming up, in Owen rooms from 9-9:50: Tuesday, 1/25, 9am, Owen 102 Thursday, 1/27, 9am, Owen 102 Friday, 1/28, 9am, Owen 106 Tuesday, 2/1, 9am, Owen 102 Please check http://eecs.oregonstate.edu/graduate/colloquium/ for details as they are posted. Tuesday January 25 9:00 - 9:50 AM Owen 102 Guangbin Zhang Electrical Engineering University of Texas at Dallas CMOS Visual Motion Sensors and Wide Dynamic Range Image Sensor Design The task of visual motion detection is to visually identify moving objects, extract information about their shapes, locations, speed, directions, and so on. It is very useful in many applications such as robot motion control, video compression, navigation control for vehicles and aircrafts, and high speed motion analysis. Traditional solution is to use digital camera plus digital processor system, which normally leads to intensive computation load and data transfer load. The new solution is to use smart visual motion sensors as front-end, which extracts motion information at pixel level and transfer only the extracted data to digital processor, thus, largely reduces the computation and data transfer load. However, previous visual motion sensors suffer from large pixel size, high power consumption, low accuracy, etc. To deal with these issues, a novel time stamped structure for 2D visual motion detection is proposed. It captures motion in more than 100 times higher time resolu tion than digital cameras with the same frame rate. Several CMOS IC chips have been fabricated which proved the feasibility and also optimized for pixel size, power consumption, accuracy, etc. The final version achieves 18 times smaller pixel size, 5000 times lower pixel power consumption compared with most recent related works. Furthermore, the time stamped structure has been successfully expanded to digital imager design, which largely extended the dynamic range of the imager for both strong and weak light. By automatically adjusting integration time of each pixel, 120dB dynamic range has been achieved, which is 1000 times wider than most commercial products. Several other research projects will also be briefly talked about, including self-calibrated transmitter driver, laser radar speed/range finder, ultra-low power imager for wireless network, and modeling of vertical-cavity surface-emitting laser diode. Biography Guangbin Zhang just received his Ph.D. degree in the Erik Jonsson School of Engineering and Computer Science of the University of Texas at Dallas (UTD) in Dec. 2004. Before that, he received his Bachelor��s Degree from the Automation Department of Tsinghua University in July, 1997 and his Master's degree from the Semiconductor Institute of the Chinese Academy of Sciences (CAS) in July, 2000. His research interests focus on analog and mixed signal integrated circuit design, especially on smart imager sensors and high speed data transmissions. He is also a student member of the IEEE Solid-State Circuits Society. _______________________________________________ Colloquium mailing list [EMAIL PROTECTED] https://secure.engr.oregonstate.edu/mailman/listinfo/colloquium
