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 images 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.
2023,45(21): 209-212 收稿日期：2023-6-7
DOI：10.3404/j.issn.1672-7649.2023.21.041
分类号：TP393
基金项目：广西自然科学基金资助项目(2020GXNSFAA297233)
作者简介：梁剑烽（1988-），男，博士研究生，实验师，研究方向为图像处理、人工智能及机器学习
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