Design of Endoscopic Capsule With Multiple Cameras

作者：Gu Yingke^*; Xie Xiang; Li Guolin; Sun Tianjia; Wang Dan; Yin Zheng; Zhang Pengfei; Wang Zhihua

来源：IEEE Transactions on Biomedical Circuits and Systems, 2015, 9(4): 590-602.

DOI：10.1109/TBCAS.2014.2359012

• Capsule endoscope
• image compression
• multiple cameras
• smart image capture

In order to reduce the miss rate of the wireless capsule endoscopy, in this paper, we propose a new system of the endoscopic capsule with multiple cameras. A master-slave architecture, including an efficient bus architecture and a four level clock management architecture, is applied for the Multiple Cameras Endoscopic Capsule (MCEC). For covering more area of the gastrointestinal tract wall with low power, multiple cameras with a smart image capture strategy, including movement sensitive control and camera selection, are used in the MCEC. To reduce the data transfer bandwidth and power consumption to prolong the MCEC's working life, a low complexity image compressor with PSNR 40.7 dB and compression rate 86% is implemented. A chipset is designed and implemented for the MCEC and a six cameras endoscopic capsule prototype is implemented by using the chipset. With the smart image capture strategy, the coverage rate of the MCEC prototype can achieve 98% and its power consumption is only about 7.1 mW.

• 出版日期2015-8
• 单位清华大学