【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I2C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.更多还原

【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.更多还原