Minimally invasive surgery (MIS) has the advantages of small trauma, quick recovery and lower risk of the surgery.Compared with the traditional two-dimension laparoscopic technique, three-dimension laparoscopic system uses the double beam imaging system as well as the three-dimensional imaging display device so as to compensate for the lack of depth information in two-dimension laparoscopic imaging technique, reduce the surgeon's difficulty in using surgical instruments and enhance the accuracy of the surgery. For those reasons, the author designed a glassesfree three dimensional wide-field electronic laparoscopic system, which consists of dual CMOS camera module,image processing module and glasses-free display module that can offer depth information. The active shape model is applied to eye tracking, for the purpose of getting the wide-field to help doctor obtain 3D display in more places.Primary experimental results of the simulation using the system show that operators with the aid of proposed system spend less time finishing the task than those using traditional system without depth perception during operation.%微创手术具有创伤小、术后恢复快、降低患者手术风险的优点.相比于传统的二维腹腔镜技术,三维腹腔镜系统使用双光路成像系统和三维显示设备,改善了二维成像技术在深度信息上的缺乏,降低了医生操作手术器械的难度,提高了手术的准确性.为此,该文作者设计了一套能够提供深度信息的裸眼三维宽视场电子腹腔镜系统,该系统主要由双光路CMOS摄像腹腔镜模块、图像处理模块、裸眼三维显示模块组成.在设计中为了保证医生在多个角度可以观看到三维效果,使用了基于主动形状模型的方法实现人眼跟踪,从而实现宽视场显示.采用该系统进行手术模拟训练的初步实验结果表明,完成指定操作的时间明显少于传统的未加入深度信息的腹腔镜系统所用时间.
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