第45卷第21期2023年11月舰船科学技术SHIPSCIENCEANDTECHNOLOGYVol.45,No.21Nov.,2023舰船红外图像处理中多通道DMA控制器改进设计梁剑烽,梁家海,姜愉(北部湾大学电子与信息工程学院,广西钦州535011)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;嵌人式Mo-tion-JPEG2000编码器,通过建立的传输通道,读人舰船红外图像,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。关键词:舰船红外图像;多通道;DMA控制器;编码器;小波变换;正交化分形编码中图分类号:TP393文章编号:1672-7649(2023)21-0209-04Improveddesignofmultichanneldmacontrollerinshipinfraredimageprocessing(CollegeofElectronicandInformationEngineering,BeibuGulfUniversity,Qinzhou535011,China)Abstract:Researchtheimproveddesignmethodofmulti-channelDMAcontrollerinshipinfraredimageprocessingtoenhancetheeffectivenessofshipinfraredimageprocessing.Thearbitratorintheimprovedmulti-channelDMAcontrollerpollsandarbitrateseachDMAchannelbasedonpriority,establishingachannelforreadingandwritingshipinfraredimages;TheembeddedMotion-JPEG2000encoderreadstheinfraredimagesofshipsthroughtheestablishedtransmissionchannel,andusesacompressionalgorithmcombiningwavelettransformandorthogonalfractalencodingtocompresstheencodedim-agesandacceleratethetransmissionefficiencyofimageprocessing.Savetheconfigurationinformationgeneratedduringshipinfraredimageprocessingthroughregisterconfiguration;Usethememoryporttosendprocessedimagestothememoryend.Responsibleforsendingprocessedimagestotheexternaldevicethroughtheperipheralport.Experimentalresultsshowthatthismethodcaneffectivelycompressshipinfraredimages.Atdifferenttargetbitrates,thecompr...