| 医用电子内窥镜畸变实时校正系统的视频控制 |
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| 引用本文： | 陈晓冬,宋玲玲,张树华,谢洪波,郁道银.医用电子内窥镜畸变实时校正系统的视频控制[J].天津大学学报(自然科学与工程技术版),2004,37(12):1073-1076. |
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| 作者姓名： | 陈晓冬 宋玲玲 张树华 谢洪波 郁道银 |
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| 作者单位： | 天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072 |
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| 基金项目： | "十五"国家科技攻关项目(2001BA706B15 A). |
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| 摘 要： | 针对内窥镜系统光学畸变问题，提出了医用电子内窥镜畸变实时校正系统的原理和硬件系统的实现．系统采用基于点阵样板的校正方法，拟合理想像与实际像的关系，完成像素点的几何位置校正和灰度校正；采用FP-GA作为控制中心，设计了I^2C串行总线通信，协调了解码器与编码器的同步控制，最终利用硬件实现了畸变实时校正功能．图像采样频率13．5MHz，帧频达25帧／s．
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| 关 键 词： | 医用电子内窥镜 畸变实时校正 编码器 视频控制 |
| 文章编号： | 0493-2137(2004)12-1073-04 |
| 修稿时间： | 2003年8月8日 |
Video Control of Real-Time Distortion Correction System of Medical Electronic Endoscope |
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| CHEN Xiao-dong,SONG Ling-ling,ZHANG Shu-hua,XIE Hong-bo,YU Dao-yinof Education,School of Precision Instruments and Opto-Electronics Engineering,Tianjin University,Tianjin ,China.Video Control of Real-Time Distortion Correction System of Medical Electronic Endoscope[J].Journal of Tianjin University(Science and Technology),2004,37(12):1073-1076. |
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| Authors: | CHEN Xiao-dong SONG Ling-ling ZHANG Shu-hua XIE Hong-bo YU Dao-yinof Education School of Precision Instruments and Opto-Electronics Engineering Tianjin University Tianjin China |
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| Institution: | CHEN Xiao-dong,SONG Ling-ling,ZHANG Shu-hua,XIE Hong-bo,YU Dao-yinof Education,School of Precision Instruments and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | In order to solve the opto-distortion problems of medical electronic endoscope, the theory of real-time distortion correction system of medical electronic endoscope and the realization of hardware system are introduced. The hardware system is based on the dot-array plate arithmetic, fitting the correlation between ideal image and real image,and achieving the correction for location and gray-level of image pixels.FPGA is used as the control center,which harmonizes the video sync control of video decoder and video encoder and outputs the same images as input images.The serial bus communication of I~2C is designed on FPGA and real-time distortion correction function is realized by hardware.The image sampling frequency of the system is 13.5 MHz and frame frequency can be up to 25 fps. |
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| Keywords: | medical electronic endoscope real-time distortion correction encoder video control |
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