Software Design Of Ultra HD Electronic Endoscope System Based On TegraX1

Electronic endoscope is playing an increasingly important role in the diagnosis of internal and external surgery,and has become one of the indispensable devices for modem medical examination.But with the continuous development of medical technology,the traditional electronic endoscope has been unable to meet the high resolution and low-latency requirements of modern medical examination.Therefore,it is of great significance to study the ultra-high-definition electronic endoscope system with high resolution and low-latency.This thesis developed a software of ultra-high-definition electronic endoscope system based on TegraX1,designed a low-latency optimization scheme,achieved the capture,real-time processing,display,encoding and storage of 2160p30 ultra-high-definition video.In order to realize the expected functional demands,this thesis developed an application framework,divided the system into human-computer interaction,data transmission,capture,processing,display,encoding and storage modules on the basis of the framework,achieved the software of ultra-high-definition electronic endoscope system based on TegraX1.In order to use two processors to process data and reduce the time consuming of data transmission between processors,this thesis developed a PCIe Switch data transfer driver and application program interface based on PCIe technology,DMA technology and embedded Linux programming technology,achieved the high-speed data transmission of two processors through the PCIe Switch chip.In addition,real-time is an important performance index of electronic endoscope system.So this thesis designed the following low-latency optimization scheme:the system tasks are organized in the form of pipelining,the half-frame data is taken as the unit of data capture,data transfer between modules is performed in the form of shared buffers,access the DMA buffer in the form of flush cache,two processors are used for parallel data processing.The experimental results show that the software of ultra-high-definition electronic endoscope system based on TegraXl realizes the expected functional demands and fulfills the desired goal of low-latency.