基于ADV212的数字域TDI图像压缩设计  

Design of digital domain TDI images compression based on ADV212

作　　者：刘禹[1] 张赫[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《国外电子测量技术》2015年第4期86-90,共5页Foreign Electronic Measurement Technology

摘　　要：针对星上高清灰度图像存储压力过大的问题,提出了基于ADV212图像压缩芯片结合FPGA实现的数字域TDI积分图像压缩解决方案。在实现的过程中ADV212芯片是以16Bit-Raw Pixel-JDATA模式完成对图像进行高效高质压缩,图像以8Bit-RAW格式从Basler CMOS传感器相机中输入,使用FPGA完成对8Bit-RAW格式图像的数字域TDI积分算法实现、ADV212芯片的配置及驱动、ADV212芯片VDATA路输入图像的预处理及整个系统的控制。实验表明在无损压缩情况下,系统可以稳定工作在50 MHz像素时钟下,压缩比可达2∶1。该系统具备轻小、使用灵活、图像存储率高及压缩率可调等优点。In this paper ,in order to deal with the problem of the HD grayscale image storage pressure on the satellite , proposed the FPGA implementation based on ADV212 image compression chip combines digital domain TDI（DDTDI） in‐tegral image compression solutions .In the process of achieving ,the ADV212 chip works in 16Bit‐Raw Pixel‐JDATA mode to complete the image compression efficiently and in high quality ,image inputs in 8Bit‐RAW format from Basler CMOS sensor camera ,FPGA completes the DDTDI image integration in 8Bit‐RAW format algorithm ,ADV212 chip con‐figuration and driving ,ADV212 chip VDATA input image pre‐processing and control of the entire system .Experimental results show that in the lossless compression ,the system can operate stably at 50 M Hz pixel clock ,the compression ratio is up to 2∶ 1 .The system is small ,light ,flexible and the rate of image storage and compression is adjustable .

关 键 词：ADV212 JPEG2000 FPGA RAW PIXEL 数字域TDI 

分 类 号：TN386.5[电子电信—物理电子学]