舰船红外图像处理中多通道DMA控制器改进设计  

Improved design of multi channel dma controller in ship infrared image processing

作　　者：梁剑烽 梁家海 姜愉 LIANG Jian-feng;LIANG Jia-hai;JIANG Yu(College of Electronic and Information Engineering,Beibu Gulf University,Qinzhou 535011,China)

机构地区：[1]北部湾大学电子与信息工程学院,广西钦州535011

出　　处：《舰船科学技术》2023年第21期209-212,共4页Ship Science and Technology

基　　金：广西自然科学基金资助项目(2020GXNSFAA297233)。

摘　　要：为了提升舰船红外图像处理效果,研究舰船红外图像处理中多通道DMA控制器改进设计方法。改进后多通道DMA控制器中仲裁器依据优先级轮询仲裁每个DMA通道,建立舰船红外图像读写传输通道;嵌入式Motion-JPEG2000编码器,通过建立的传输通道,读入舰船红外图像,并利用结合小波变换与正交化分形编码的压缩算法,压缩编码图像,加快图像处理的传输效率。通过寄存器配置保存舰船红外图像处理时产生的配置信息;利用存储器端口向存储器端发送处理后的图像,通过外设端口负责向外设端发送处理后的图像。实验证明:该方法可有效压缩舰船红外图像;在不同目标比特率时,该方法压缩后图像的逼真度均较高;该方法改进后多通道DMA控制器的图像传输效率较快。Research the improved design method of multi-channel DMA controller in ship infrared image processing to enhance the effectiveness of ship infrared image processing.The arbitrator in the improved multi-channel DMA controller polls and arbitrates each DMA channel based on priority,establishing a channel for reading and writing ship infrared images;The embedded Motion-JPEG2000 encoder reads the infrared images of ships through the established transmission channel,and uses a compression algorithm combining wavelet transform and orthogonal fractal encoding to compress the encoded im-ages and accelerate the transmission efficiency of image processing.Save the configuration information generated during ship infrared image processing through register configuration;Use the memory port to send processed images to the memory end.Responsible for sending processed images to the external device through the peripheral port.Experimental results show that this method can effectively compress ship infrared images.At different target bit rates,the compressed image of this method has a higher fidelity.The improved multi-channel DMA controller has a faster image transmission efficiency.

关 键 词：舰船红外图像 多通道 DMA控制器 编码器 小波变换 正交化分形编码 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]