基于JPEG压缩图像的数字图像胶囊系统研究  

Research on digital image capsule system of JPEG compression

作　　者：杨扎史 刘华[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电子设计工程》2015年第11期68-71,共4页Electronic Design Engineering

基　　金：国家自然科学基金(31271069;30800235);上海交通大学医工理交叉基金(YG2013MS24)

摘　　要：本文研究了基于JPEG压缩图像的数字图像胶囊系统,该数字图像胶囊实现消化道图像采集与无线传送,为消化道疾病诊疗胶囊提供消化道图像信息,实现消化道疾病的诊断,并为体外磁控制提供图像导航信息。该数字图像胶囊系统采用图像压缩芯片CX93510,该芯片能够对通用CMOS图像传感器输出的图像数据进行压缩,其压缩比可配置。本系统选用低功耗CMOS图像传感器OV7740,压缩比为30,极大的减小后端无线传输的数据,降低对无线传输带宽的要求。本文完成数字图像胶囊系统原型样机设计和体外接收系统设计,为消化道诊疗胶囊提供了优异的解决方案。Digital image JPEG compressed image capsule system based on is researched in this paper. This digital image capsule is used to capture and transmit the data of human intestinal tract for diseases diagnosis and provide image navigation control information to the external magnetic function. This digital image capsule adopt image compress chip CX93510 for compress the output data of general image sensor, and the compression ratio can be configured.The low-power CMOS image sensor OV7740 is adopted in this system,and a JPEG compressed ratio nearly 30 achieved can reduced vastly the image data for wireless transmission, relieve the bandwidth requirements of wireless transmission.In this paper,The prototype of digital image capsule system and extracorporeal data receiving system are designed,these systems provide excellent solutions for gastrointestinal clinics capsule.

关 键 词：数字图像胶囊 图像压缩芯片 图像传感器 JPEG 

分 类 号：TN919.85[电子电信—通信与信息系统]