Title :
Design of Micro-Ball endoscopy system
Author :
Yingke Gu ; Xiang Xie ; Guolin Li ; Tianjia Sun ; Dan Wang ; Zheng Yin ; Yangdong Deng ; Zhihua Wang
Author_Institution :
Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
In order to reduce the miss rate of the wireless capsule endoscopy and help physicians to read endoscopic images in an easier manner, this paper proposes a Micro-Ball endoscopy system which is equipped with six cameras. This work develops key techniques to miniaturize the size and lower the power consumption of the Micro-Ball. The Micro-Ball is activated by a wireless power supply unit with a rectifying efficiency of 93.6%. An effective image post-processing method for deriving 2D representation of the digestive tract wall is also presented. The Micro-Ball integrates a low-power attitude sensing unit to provide information for image registration and Micro-Ball control. These designs assure that the Micro-Ball has small size (diameter less than 15mm), can work for more than 15 hours, at an image resolution of 480×480 and an image frame rate of 2fps, when powered by 1.55V@60mAh battery. The effectiveness of the Micro-Ball system has been verified by an FPGA demonstration system.
Keywords :
biological tissues; biomedical optical imaging; cameras; endoscopes; field programmable gate arrays; image registration; image sensors; medical image processing; FPGA demonstration system; MicroBall endoscopy system design; cameras; current 60 mA; digestive tract wall; endoscopic images; image post processing method; image registration; voltage 1.55 V; wireless capsule endoscopy; wireless power supply unit; Cameras; Endoscopes; Image registration; Power demand; Sensors; Wireless communication; Wireless sensor networks;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2012 IEEE
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-2291-1
Electronic_ISBN :
978-1-4673-2292-8
DOI :
10.1109/BioCAS.2012.6418460
