题目/Title：CMOS Image Sensor Design and Image Processing Algorithm Implementation for Total Hip Arthroplasty Surgery

作者/Author：
                        Syed Mudassir Hussain,Fasih Ud Din Farrukh,Shaojie Su,Zhihua Wang,Hong Chen

期刊/Journal：IEEE Transactions on Biomedical Circuits and Systems

年份/Issue Date：2019Oct.

卷（期）及页码/Volume（No.）&pages：Vol.PP, No.99, pp. 1 - 1

摘要/Abstract：
As the average age of the population goes higher, the people undergo hip arthroplasty surgery to replace their stiff and painful damaged hip joints. To reduce the risk factor after the surgery we developed a visual aided system in previous works. In order to solve the integration problems of commercial camera with other sensors into the femoral head and to minimize the area and power consumption, in this paper we propose a CMOS image sensor of resolution 200x200 specially designed for the application in which each individual pixel measures around 15um x15um in size and the image sensor chip size measures about 3.5mmx3.5mm. The proposed sensor is simulated with the input current variations from 2pA to 100pA for the individual pixels and the corresponding measurements for each pixel ranges from 2mV to 855mV. Besides, we put forward a new method of patterns detection and recognition in the blood covered situation, which provides an accurate segmentation of patterns from the blood. All the detected patterns are recognized by generating its right 9-bit binary ID required for the pose estimation calculation. Furthermore, to reduce system power consumption, we implement algorithms on FPGA to process the image data pixel by pixel and transmit it directly to the computer for post processing. Experimental results show that the patterns detection rate goes as high as 99%, which is 5% better in accuracy compared to the top hat algorithm. Power consumption of the system is 213mW, which is a 70% decrease compared to our previous work.