A new method of coding and decoding in the system of underwater image transmission is introduced, including the rapid digital frequency synthesizer in multiple frequency shift keying, image data generator, image grays...A new method of coding and decoding in the system of underwater image transmission is introduced, including the rapid digital frequency synthesizer in multiple frequency shift keying, image data generator, image grayscale decoder with intelligent fuzzy algorithm, image restoration and display on microcomputer.展开更多
To solve the real-time transmission problem of displacement fields in digital image correlation,two compression coding algorithms based on a discrete cosine transform(DCT)and discrete wavelet transform(DWT)are propose...To solve the real-time transmission problem of displacement fields in digital image correlation,two compression coding algorithms based on a discrete cosine transform(DCT)and discrete wavelet transform(DWT)are proposed.Based on the Joint Photographic Experts Group(JPEG)and JPEG 2000 standards,new non-integer and integer quantizations are proposed in the quantization procedure of compression algorithms.Displacement fields from real experiments were used to evaluate the compression ratio and computational time of the algorithm.The results show that the compression ratios of the DCT-based algorithm are mostly below 10%,which are much less than that of the DWT-based algorithm,and the computational speed is also significantly higher than that of the latter.These findings prove the algorithm s effectiveness in real-time displacement field wireless transmission.展开更多
目的探讨无线网络传输移动心电监护系统在院前急救中的应用效果。方法运用无线网络传输移动心电监护系统在院前急救中监护200例患者,统计患者的病种、年龄,分别监测车载监护仪心电图和接诊医院中央服务器实时接收心电图的心率、QRS波、...目的探讨无线网络传输移动心电监护系统在院前急救中的应用效果。方法运用无线网络传输移动心电监护系统在院前急救中监护200例患者,统计患者的病种、年龄,分别监测车载监护仪心电图和接诊医院中央服务器实时接收心电图的心率、QRS波、P波、T波、P-R间期、Q-T间期,血压,血氧饱和度,呼吸频率,完成任务总时间及传输前所用时间。并将患者按出车时段分为6组,比较每组的首次传输成功率。将患者按传输地点分为途中和家中两组,比较首次传输成功率。结果200例患者现场检查和院内接收到的两帧心电图的心率、QRS波、P波、T波、P-R间期和Q-T间期间差别均无统计学意义(P>0.05);血压及血氧饱和度测量值间差别亦无统计学意义(P>0.05)。6个时段的首次传输成功率组间比较差别无统计学意义(P>0.05)。在患者家中和途中传输成功率间差别无统计学意义(P>0.05)。平均总急救时间与信息到达医院时所用的平均急救时间相差近30 m in。结论无限网络传输移动心电监护系统能够适应院外条件,较好地完成患者信息的传输。院内接收到的信息可以作为接诊医生判断病情和指导救治的依据,使院内治疗提前,缩短患者的救治时间,使院内与院前无缝隙衔接成为可能。展开更多
基金Supported by Fund fo University Backbone Teachers by the Ministry of Education
文摘A new method of coding and decoding in the system of underwater image transmission is introduced, including the rapid digital frequency synthesizer in multiple frequency shift keying, image data generator, image grayscale decoder with intelligent fuzzy algorithm, image restoration and display on microcomputer.
基金The National Natural Science Foundation of China(No.11827801,11902074)。
文摘To solve the real-time transmission problem of displacement fields in digital image correlation,two compression coding algorithms based on a discrete cosine transform(DCT)and discrete wavelet transform(DWT)are proposed.Based on the Joint Photographic Experts Group(JPEG)and JPEG 2000 standards,new non-integer and integer quantizations are proposed in the quantization procedure of compression algorithms.Displacement fields from real experiments were used to evaluate the compression ratio and computational time of the algorithm.The results show that the compression ratios of the DCT-based algorithm are mostly below 10%,which are much less than that of the DWT-based algorithm,and the computational speed is also significantly higher than that of the latter.These findings prove the algorithm s effectiveness in real-time displacement field wireless transmission.
文摘目的探讨无线网络传输移动心电监护系统在院前急救中的应用效果。方法运用无线网络传输移动心电监护系统在院前急救中监护200例患者,统计患者的病种、年龄,分别监测车载监护仪心电图和接诊医院中央服务器实时接收心电图的心率、QRS波、P波、T波、P-R间期、Q-T间期,血压,血氧饱和度,呼吸频率,完成任务总时间及传输前所用时间。并将患者按出车时段分为6组,比较每组的首次传输成功率。将患者按传输地点分为途中和家中两组,比较首次传输成功率。结果200例患者现场检查和院内接收到的两帧心电图的心率、QRS波、P波、T波、P-R间期和Q-T间期间差别均无统计学意义(P>0.05);血压及血氧饱和度测量值间差别亦无统计学意义(P>0.05)。6个时段的首次传输成功率组间比较差别无统计学意义(P>0.05)。在患者家中和途中传输成功率间差别无统计学意义(P>0.05)。平均总急救时间与信息到达医院时所用的平均急救时间相差近30 m in。结论无限网络传输移动心电监护系统能够适应院外条件,较好地完成患者信息的传输。院内接收到的信息可以作为接诊医生判断病情和指导救治的依据,使院内治疗提前,缩短患者的救治时间,使院内与院前无缝隙衔接成为可能。
