基于ZYNQ的内窥镜图像处理系统设计

Design of Endoscopic Image Processing System Based on ZYNQ

针对传统医用内窥镜系统体积大、成本高等问题,论文设计并实现了基于ZYNQ的内窥镜图像处理系统。系统以Xilinx公司推出的ZYNQ7020为主控芯片,OV6946为图像采集摄像头,OV426为图像解码芯片,FPGA为图像处理端接收RAW格式图像,去除图像坏点后做颜色插值转换为彩色RGB图像,再做白平衡处理还原图像的真实色彩,最后增强图像对比度提高可视效果,图像经AXI总线存储到DDR3中,最后通过HDMI显示。PS端对FPGA进行初始化配置,协助完成图像采集和存储工作。由测试结果可以得出,该系统设计简洁,占用资源少,处理实时性高,图像处理结果满足预期要求,具有良好的应用前景。

In order to solve the problems of large size and high cost of traditional medical endoscope system,an endoscopic image processing system based on ZYNQ is designed and implemented in this paper.The system uses the ZYNQ7020 launched by Xilinx as the main control chip,OV6946 is the image acquisition camera,OV426 is the image decoding chip,the FPGA is the im-age processing terminal to receive the RAW format image,remove the image bad pixels and do color interpolation to convert to color RGB image,then do white balance processing to restore the real color of the image,and finally enhance the image contrast to im-prove the visual effect,the image is stored in DDR3 through the AXI bus,and finally displayed through HDMI.The PS side initializ-es the FPGA configuration to assist in image acquisition and storage.From the test results,it can be concluded that the design of the system is simple,the resources are less,the processing time is high,the image processing results meet the expected requirements,and have a good application prospect.