A design of camera simulator for photoelectric image acquisition system

• 作 者: g.cai[1]w.liu[2]x.zhang[2]
• 机 构: Xi'an Institute of Optics and Precision Mechanics of CAS(China)and University of Chinese Academy of
• 出 处: 2014年光子与光学工程国际会议暨西部光子学学术会议
• 发表日期: 2014年期

　　In the process of developing the photoelectric image acquisition equipment,it needs to verify the function and performance.In order to make the photoelectric device recall the image data formerly in the process of debugging and testing,a design scheme of the camera simulator is presented.In this system,with FPGA as the control core,the image data is saved in NAND flash through USB2.0 bus.Due to the access rate of the NAND flash is too slow to meet the requirement of the system,to fix the problem,the pipeline technique and the High-Band-Buses technique are applied in the design to improve the storage rate.It reads image data out from flash in the control logic of FPGA and output separately from three different interface of Camera Link,LVDS and PAL,which can provide image data for photoelectric image acquisition equipment's debugging and algorithm validation.However,because the standard of PAL image resolution is 720*576,the resolution is difference between PAL image and input image,so the image can be output after the resolution conversion.The experimental results demonstrate that the camera simulator outputs three format image sequence correctly,which can be captured and displayed by frame gather.And the three-format image data can meet test requirements of the most equipment,shorten debugging time and improve the test efficiency.