Real-time stereo display device for endoscopy/laparoscopy

• Main Authors: Wei-Kuang Chao, 趙偉光
• Other Authors: Yin Chang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/85752444030915082455

碩士 === 國立陽明大學 === 醫學工程研究所 === 99 === Objective： The main purpose of this study is to add the technique of stereo-vision to the traditional endoscopic display device. By which, the operators and the assistants can view real-time 3D video image that can help them to have a better sense of depth during a surgical operation. In the mean time the other peoples in the surgical team can watch the operation from a traditional flat panel display (LCD). Due to having the sense of depth, the surgery can be operated more precisely and the operation time can be shortened. Method： Our testing video is provided by Taipei Veterans General Hospital and then we take some video fragment for verification. In order to generate a stereo image, there are two parts. First, acquiring depth-data from the given image, we simulated and demonstrated it by Matlab(R2009a). Second, we are using two FPGA (Altera DE-2 70[2]) as a hardware platform for combining pixel shifting algorithm with the depth-data, the input end is a AV signal and output end is a VGA signal. The processed video stream are outputting to a HMD (head mounted display-CybermanTM) with two VGA inputs, so each eye receives a different image from the FPGA platform. Result / Conclusion： The result from Matlab verified our assumption about small light angle reflecting intensity can be used as a factor for acquiring depth information from endoscopic images. So we can use this data to shift each pixel according to its light reflecting intensity, and then generating stereo images.