基于彩色CMOS图像传感器的图像压缩预处理系统的设计  

Image Compression Pretreatment System Based on Color CMOS Image Sensor

作　　者：崔巍[1] 汶德胜[1] 马涛[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,西安710068

出　　处：《科学技术与工程》2006年第10期1387-1392,共6页Science Technology and Engineering

摘　　要：结合彩色CMOS图像传感器和BayerCFA格式图像的特点,提出了一种基于Bayer图像的准无损压缩算法。该算法简单高效,可以在准无损压缩下取得较高的图像恢复质量,非常适用于遥感图像、医学影像等对图像质量要求较高的场合。在对算法进行仿真评估基础上提出了基于COMS图像传感器IBIS5-A-1300的图像压缩FPGA实现方案,整个结构采用流水线设计,同时用少量行缓存代替传统的大容量存储,节省了存储资源,加快了运算速率,减小了电路规模,经验证明完全满足对Bayer图像实时处理的要求,为后续实时压缩编码和传输提供了有利条件。The characteristic of color CMOS image sensor and Bayer image are introduced. A near-lossless compression method for Bayer image is presented, which is simple and efficient. This method can get high recovery-quality image under near-lossless compression, so it suits to medical or remote sensing image and other high-quality image. Based on the simulations and evaluations of this method, an efficient FPGA implementation based on IBISS-A-1300 CMOS Image Sensor is presented. The whole architecture was optimized in the pipeline design, tew line buffers instead of large memory to get higher hardware utilization and speed, so it can process Bayer image in real time and create good condition for coding and transmission.

关 键 词：CMOS图像传感器 BAYER格式 准无损压缩 IBIS5-A-1300 FPGA 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]