基于SOPC技术的高速图像采集控制系统的设计与研究

针对高速图像采集控制系统中带宽不足的问题，应用SOPC(System on a Programmable Chip)技术在Avalon总线中嵌入自定义外设完成图像采集、图像数据压缩和图像存储，大大提高了系统的成像速度。首先，通过在图像采集端对数据进行流水线压缩编码的方法，将数据量压缩为原来的四分之三。然后，基于VHDL...

Design and Research of a High-speed Image Acquisition System Based on SOPC Technology

Based on SOPC(System on a Programmable Chip)technology,some peripherals embedded in Avalon bus were customized and utilized in image acquisition unit,compression unit and storage unit,and these measures improved the speed of the whole imaging system.The data is compressed to three-fourths of the original.A custom DMA is designed for transferring the image data to the two caches of the SDRAM.This approach discards the method that FIFO must be put up in the traditional data acquisition system.And therefore,it reduced the CPU task for data transferring.At the same time,the image acquisition and the data transmission can complete a parallel job to improve the system efficiency.Finally,the design is worked on an 2k×2k high-speed CMOS image system,and the test results show its feasibility and flexibility in high-speed image acquisition applications.