According to the real demand of image real-time storage display and real-time tracking display for large field of view and high-speed camera, which was with Camera Link interface, a large field of view image acquisition and SDI display system based on FPGA was designed. FPGA EP2S90F1020 of Altera Company as the core processor and two pieces of SDRAM MT48LC4M32 were used. A method of image real-time zooming based on FPGA and real-time conversion of Bayer format color image to SDI display was proposed. The real-time display of large field of view color video image, which was Camera Link interface, was realized on SDI video image. The experimental results show that the design method can convert the 2 048×2 048, 100 Hz video image of Camera Link interface into $1\;920 \times 1\;080$, 25 Hz or $1\;280 \times 720$, 25 Hz, or $720 \times 576$, 50 Hz SDI display in real time. In the FPGA environment, the whole image processing time is 8.7 ms, which meets the real-time requirements of the system, and provides an effective implementation method for the real-time display of large field of view video image in embedded system.