文章编号:1002-2082(2024)01-0099-08基于小波变换的全息图压缩编码比较研究付泰,陈艾帅,胡磊,桂进斌,吴佳雪,王晓诗,许路昕(昆明理工大学理学院,云南昆明650500)摘要:在全息三维显示及全息视频应用中,减少全息图的信息量、满足通信带宽的要求是一项重要的研究工作。使用小波阈值和量化的方法有损压缩全息图,对比分析使用不同小波基阈值对全息图再现像质量和全息图压缩比的影响。研究结果表明,对离轴数字全息图小波阈值有损压缩后,Haar和db5小波基得到的再现像质量最高,其峰值信噪比(PSNR)达到了26.38dB,使用sym2和db2小波得到的压缩比最高,达到了6.68。相息图小波阈值有损压缩后,Haar和Daube-chies小波得到的再现像质量最高,其PSNR达到了32.32dB,使用Biorthogonal小波得到的压缩比最高,达到了4.47。研究结果可为如何有效使用小波变换实现全息图的压缩提供参考。关键词:全息;小波阈值;图像压缩;全息编码中图分类号:TN26;O438.1文献标志码:ADOI:10.5768/JAO202445.0102004ComparisonofhologramcompressioncodingbasedonwavelettransformFUTai,CHENAishuai,HULei,GUIJinbin,WUJiaxue,WANGXiaoshi,XULuxin(FacultyofScience,KunmingUniversityofScienceandTechnology,Kunming650500,China)Abstract:Inholographic3Ddisplayandholographicvideoapplications,reducingtheamountofinformationinhologramstomeettherequirementsofcommunicationbandwidthisanimportantresearchtask.Thewaveletthresholdandquantizationapproacheswereusedtolossycompressholograms,andtheeffectsofusingdifferentwaveletbasisthresholdsonthereconstructedimagequalityandcompressionratioofhologramswerecomparedandanalyzed.Theresearchresultsshowthatafterlossycompressionofthewaveletthresholdofoff-axisdigitalhologram,thereconstructedimagequalityobtainedbyHaaranddb5waveletbasesisthehighest.Itspeaksignaltonoiseratio(PSNR)reaches26.38dB,andthecompressionratioobtainedbyusingsym2anddb2waveletisthehighest,reaching6.68.Afterlossycompressionofthewaveletthresholdofphasehologram,thereconstructedimagequalityobtainedbyHaarandDaubechieswaveletsisthehighest,withaPSNRof32.32dB.ThecompressionratioobtainedbyusingtheBiorthogonalwaveletisthehighest,reaching4.47.Theresearchresultsprovideareference...