一种HDMI信号自动投屏器设计

机顶盒及OTT(Over The Top)设备出现以后,电视机接入信号源越来越多。用户群体中,老年人群有看电视的刚需,但由于不会操作选择正确的信号源,其面临想看电视但难以操作的困扰。对此,设计一款高清多媒体接口(High Definition Multimedia Interface,HDMI)信号投屏器,帮助不懂电视机和信号源设备操作的人群一键快速进入期望信号源的电视界面。

Can optical diagnosis of small colon polyps be accurate? Comparing standard scope without narrow banding to high definition scope with narrow banding

AIM: To study the accuracy of using high definition(HD) scope with narrow band imaging(NBI) vs standard white light colonoscope without NBI(ST), to predict the histology of the colon polyps, particularly those < 1 cm.METHODS: A total of 147 African Americans patients who were referred to Howard University Hospital for screening or, diagnostic or follow up colonoscopy, during a 12-mo period in 2012 were prospectively recruited. Some patients had multiple polyps and total number of polyps was 179. Their colonoscopies were performed by 3 experienced endoscopists who determined the size and stated whether the polyps being removed were hyperplastic or adenomatous polyps using standard colonoscopes or high definition colonoscopes with NBI. The histopathologic diagnosis was reported by pathologists as part of routine care. RESULTS: Of participants in the study, 55(37%) were male and median(interquartile range) of age was 56(19-80). Demographic, clinical characteristics, past medical history of patients, and the data obtained by two instruments were not significantly different and two methods detected similar number of polyps. In ST scope 89% of polyps were < 1 cm vs 87% in HD scope(P = 0.7). The ST scope had a positive predictive value(PPV) and positive likelihood ratio(PLR) of 86% and 4.0 for adenoma compared to 74% and 2.6 for HD scope. There was a trend of higher sensitivity for HD scope(68%) compare to ST scope(53%) with almost the same specificity. The ST scope had a PPV and PLR of 38% and 1.8 for hyperplastic polyp(HPP) compared to 42% and 2.2 for HD scope. The sensitivity and specificity of two instruments for HPP diagnosis were similar.CONCLUSION: Our results indicated that HD scope was more sensitive in diagnosis of adenoma than ST scope. Clinical diagnosis of HPP with either scope is less accurate compared to adenoma. Colonoscopy diagnosis is not yet fully matched with pathologic diagnosis of colon polyp. However with the advancement of both imaging and training, it may be possible to increase the sensitivity and specificity of the scopes and hence save money for eliminating time and the cost of Immunohistochemistry/pathology.

Role of high definition colonoscopy in colorectal adenomatous polyp detection

AIM:To investigate the rates of polyp detection in a mixed risk population using standard definition (SDC) vs high definition colonoscopes (HDC).METHODS:This was a retrospective cohort comparative study of 3 colonoscopists who each consecutively performed 150 SDC (307,200 pixel) and 150 HDC (792,576 pixels) in a community teaching hospital.RESULTS:A total of 900 colonoscopies were evaluated (mean age 56,46.8% men),450 with each resolution.Polyps of any type were detected in 46.0% of patients using SDC and 43.3% with HDC (P=0.42).There was no significant difference between the overall number of polyps,HDC (397) and SDC (410),detected among all patients examined,(P=0.73).One or more adenomatous polyps were detected in 24.2% of patients with HDC and 24.9% of patients with SDC colonoscopy (P=0.82).There was no significant difference between HDC (M=0.41) and SDC (M=0.42) regarding adenomatous polyp (P=0.88) or advanced adenoma (P=0.56) detection rate among all patients examined.CONCLUSION:HDC did not improve yield of adenomatous polyp,advanced adenoma or overall polyp detection in a population of individuals with mixed risk for colorectal cancer.

Multicenter randomised controlled trial comparing the high definition white light endoscopy and the bright narrow band imaging for colon polyps

AIM To compare high definition white light endoscopy and bright narrow band imaging for colon polyps' detection rates. METHODS Patients were randomised to high definition white light endoscopy(HD-WLE) or the bright narrow band imaging(b NBI) during withdrawal of the colonoscope. Polyps identified in either mode were characterised using b NBI with dual focus(b NBI-DF) according to the Sano's classification. The primary outcome was to compare adenoma detection rates(ADRs) between the two arms. The secondary outcome was to assess the negative predictive value(NPV) in differentiating adenomas from hyperplastic polyps for diminutive rectosigmoid lesions.RESULTS A total of 1006 patients were randomised to HD-WLE(n = 511) or b NBI(n = 495). The mean of adenoma per patient was 1.62 and 1.84, respectively. The ADRs in b NBI and HD-WLE group were 37.4% and 39.3%, respectively. When adjusted for withdrawal time(OR = 1.19, 95%CI: 1.15-1.24, P < 0.001), the use of b NBI was associated with a reduced ADR(OR = 0.69, 95%CI: 0.52-0.92). Nine hundred and thirty three polyps(86%) in both arms were predicted with high confidence. The sensitivity(Sn), specificity(Sp), positive predictive value and NPV in differentiating adenomatous from non-adenomatous polyps of all sizes were 95.9%, 87.2%, 94.0% and 91.1% respectively. The NPV in differentiating an adenoma from hyperplastic polyp using b NBI-DF for diminutive rectal polyps was 91.0%.CONCLUSION ADRs did not differ between b NBI and HD-WLE, however HD-WLE had higher ADR after adjustment of withdrawal time. b NBI surpassed the PIVI threshold for diminutive polyps.

Improving sessile serrated adenoma detection rates with high definition colonoscopy:A retrospective study

BACKGROUND Sessile serrated adenomas(SSAs)are important premalignant lesions that are difficult to detect during colonoscopy due to poor definition,concealment by mucous caps,and flat appearance.High definition(HD)colonoscopy may uniquely aid in the detection of these inconspicuous lesions compared to standard definition(SD)colonoscopes.In the absence of existing clinical guidelines to obligate the use of HD colonoscopy for colorectal cancer screening in average-risk patients,demonstrating the benefit of HD colonoscopy on SSA detection rate(SSADR)may help strengthen the evidence to recommend its use in all settings.AIM To evaluate the benefit of HD colonoscopy compared to SD colonoscopy on SSADR in average-risk patients undergoing screening colonoscopy.METHODS Data from screening colonoscopies for patients aged 50-76 years two years before and two years after the transition from SD colonoscopy to HD colonoscopy at our large,academic teaching center were collected.Patients with symptoms of colorectal disease,positive occult blood test,history of colon polyps,cancer,polyposis syndrome,inflammatory bowel disease or family history of colon cancer or polyps were excluded.Patients whose endoscopists did not perform colonoscopies both before and after scope definition change were also excluded.Differences in individual endoscopist SSADR,average SSADR,and overall SSADR with SD colonoscopy vs HD colonoscopy were also evaluated for significance.RESULTS A total of 3657 colonoscopies met eligibility criteria with 2012 colonoscopies from the SD colonoscopy period and 1645 colonoscopies from the HD colonoscopy period from a pool of 11 endoscopists.Statistically significant improvements of 2.30%in mean SSADR and 2.53%in overall SSADR were noted with HD colonoscopy(P=0.00028 and P=0.00849,respectively).On the individual level,three endoscopists experienced statistically significant benefit with HD colonoscopy(+5.74%,P=0.0056;+4.50%,P=0.0278;+4.84%,P=0.03486).CONCLUSION Our study suggests that HD colonoscopy statistically significantly improves sessile serrated adenoma detection rate in the screening of average risk patients during screening colonoscopy.By improving the detection and removal of these lesions,adoption of HD colonoscopy may reduce the significant premalignant burden of sessile serrated adenomas.

A Reliable Adaptive High-Definition Transmission System for Distance Learning

There is an increasing demand for supporting high-quality real-time audiovisual services for the next generation wired and wireless networks. However, due to variety of bandwidths of different networks, it is a great challenge for deployment. In this paper, a novel high-definition (HD) video transmission system was proposed which depends upon reliable compound multicast protocols and QoS control over the various kinds of networks. This system detects client's network condition and assigns it to a proper proxy. Each proxy is capable of detecting network parameters and adaptively tuning such transport parameters as bit rate, video resolution, frame rate and QoS mechanisms to this condition. It also provides FEC error recovery under consideration of characteristics of MPEG4 video codec. Our simulation demonstrates that different network clients such as ADSL, CERNET, and CERNET2 can receive more video reliability with less delay.

丹参HD-ZIP基因家族的鉴定与表达分析

为筛选丹参(Salvia miltiorrhiza)中响应高温胁迫的HD-ZIP基因,利用生物信息学研究方法,对丹参全基因组的HD-ZIP基因进行了鉴定和分析,并以天丹1号为材料,通过qPCR技术检测了丹参HDZIP基因在高温胁迫下的表达模式。结果表明,丹参全基因组中包含44个HD-ZIP基因(SmHD-ZIP),不均匀地分布于8条染色体上。SmHD-ZIP可分为HD-ZIPⅠ、HD-ZIPⅡ、HD-ZIPⅢ和HD-ZIPⅣ4个亚家族,序列分析结果表明,这些蛋白质的氨基酸残基数为180~982个,相对分子质量为20.947~109.620 ku。SmHD-ZIP均为亲水蛋白,无跨膜结构域,绝大多数不含信号肽,等电点为4.48~10.91,且几乎都在细胞核表达,蛋白质稳定性较差。44个SmHD-ZIP基因中有10个基因复制事件,均为纯化选择。结构和模体分析结果表明,同一亚家族成员的外显子数目基本一致,HD-ZIPⅢ亚家族成员的外显子数目最多,模体数也最多。模体1、6是SmHD-ZIP的保守模体,模体10、11、12、13、15为HD-ZIPⅢ亚家族特有,模体5为HD-ZIPⅣ亚家族特有。通过分析高温(37℃)胁迫下SmHD-ZIP的表达模式发现,表达量升高和下降的基因数基本一致,在上调表达的基因中,SmHD-ZIP1.11、SmHD-ZIP1.13、SmHD-ZIP2.2、SmHD-ZIP2.5、SmHD-ZIP3.1、SmHD-ZIP3.4、SmHD-ZIP4.9、SmHD-ZIP4.10和SmHD-ZIP4.12的表达量提高了10倍以上,可作为提高丹参耐热性的候选基因资源。

ZTE IPTV Low Bit Rate High Definition Transcoding Solution Nominated for Global IPTV Industry Award

ZTE Corporation announced on 1 March that its innovative IPTVlowbitrate highdefinition transcoding solution has been nominated for the World＇s Best Component or Enabler Award by the IPTV World Forum. The ZTE solution is on display at the Mobile World Congress 2012 （MWC 2012） in Barcelona.

Optical diagnosis of colorectal polyps using high-definition i-scan: An educational experience

AIM:To examine performances regarding prediction of polyp histology using high-definition (HD) i-scan in a group of endoscopists with varying levels of experience. METHODS:We used a digital library of HD i-scan still images, comprising twin pictures (surface enhancement and tone enhancement), collected at our university hospital. We defined endoscopic features of adenomatous and non-adenomatous polyps, according to the following parameters:color, surface pattern and vascular pattern. We familiarized the participating endoscopists on optical diagnosis of colorectal polyps using a 20-min didactic training session. All endoscopists were asked to evaluate an image set of 50 colorectal polyps with regard to polyp histology. We classified the diagnoses into high confidence (i.e., cases in which the endoscopist could assign a diagnosis with certainty) and low confidence diagnoses (i.e., cases in which the endoscopist preferred to send the polyp for formal histology). Mean sensitivity, specificity and accuracy per endoscopist/image were computed and differences between groups tested using independent-samples t tests. High vs low confidence diagnoses were compared using the pairedsamples t test. RESULTS:Eleven endoscopists without previous experience on optical diagnosis evaluated a total of 550 images (396 adenomatous, 154 non-adenomatous). Mean sensitivity, specificity and accuracy for diagnosing adenomas were 79.3%, 85.7% and 81.1%, respectively. No significant differences were found between gastroenterologists and trainees regarding performances of optical diagnosis (mean accuracy 78.0%vs 82.9%,P = 0.098). Diminutive lesions were predicted with a lower mean accuracy as compared to non-diminutive lesions (74.2% vs 93.1%, P = 0.008). A total of 446 (81.1%) diagnoses were made with high confidence. High confidence diagnoses corresponded to a significantly higher mean accuracy than low confidence diagnoses (84.0% vs 64.3%, P = 0.008). A total of 319 (58.0%) images were evaluated as having excellent quality. Considering excellent quality images in conjunction with high confidence diagnosis, overall accuracy increased to 92.8%. CONCLUSION:After a single training session, endoscopists with varying levels of experience can already provide optical diagnosis with an accuracy of 84.0%.

HD-tDCS及雷达认知训练游戏提升雷达操纵员绩效研究

目的比较联合或单独使用高精度经颅直流电刺激(HD-tDCS)与雷达认知训练游戏对雷达操纵员绩效提升的效果,探讨雷达操纵员更加实效的新训练方法。方法将87名被试随机分为联合组(n=23)、训练组(n=22)、刺激组(n=21)及对照组(n=21);采用HD-tDCS对现役雷达操纵员左侧背外侧前额叶持续干预9 d(1次/d,20 min/次),同步或单独进行雷达认知训练游戏;使用SPSS 26.0软件进行两因素重复测量方差分析,比较工作记忆、注意力、雷达认知训练游戏成绩及操纵员专业训练成绩的变化。结果所有成绩组别主效应均不显著;时间与组别交互效应显著的有认知能力测评2-back任务ACC成绩(P=0.02)、4-back任务RT成绩(P<0.01)、三维1-back任务ACC成绩(P=0.06边缘显著)、雷达认知训练游戏默记航线RT成绩(P<0.01)及双批航线RT成绩(P<0.01);仅时间主效应显著的有工作记忆广度任务正确最大值成绩(P<0.01)、3-back任务RT成绩(P=0.04)、注意广度任务ACC成绩(P=0.02)、精神运动警觉性任务ACC成绩(P<0.01)、默记航点ACC成绩(P<0.01)、默记航点RT成绩(P<0.01)、默记航线ACC成绩(P<0.01)、双批航线ACC成绩(P<0.01)、多批航点ACC成绩(P<0.01)、多批航点RT成绩(P<0.01)、雷达操纵员机下练习科目心算天线俯仰角成绩(P=0.04)及口报航点距离方位角成绩(P<0.01)。结论HD-tDCS及雷达认知训练游戏可以提升操纵员绩效水平,前者在安全性及实效性方面均具有较好的应用前景,后者经再优化后可直接推广使用。

爆破塌落触地载荷下浅埋缺陷PE HD管道力学响应分析

针对含划痕缺陷高密度聚乙烯(High-Density Polyethylene,PE-HD)管道面临爆破拆除工程中塌落物冲击问题,设计了浅埋管道落锤冲击和拉伸试验,再结合Abaqus有限元软件研究了触地载荷下含缺陷管道的力学响应,探究了不同因素下管道力学行为规律和防护措施的有效性。结果表明:冲击试验中管顶应力高于管底应力,管材在屈服后应力明显下降;硬化路面下划痕管道的最大Mises应力显著减小;当划痕深度系数为0.5时,管顶部和底部存在划痕的管道最易失效;内压在一定程度上对划痕管道有保护作用;管道在高触地速度冲击下应力集中现象更明显;对冲击下的缺陷管道进行聚苯乙烯泡沫(Expanded Polystyren,EPS)缓冲垫层和多级复合缓冲垫层防护后,管道最大应力分别下降40%和72%,因此建议根据工程实际情况中针对临近触地载荷下的管道选取合理的防护措施。

基于HDXRF和ICP-MS的黔西北土壤重金属空间分布及影响因素研究

高精度X射线荧光光谱仪(HDXRF)是一种准确度较高的金属元素快速检测仪器。本研究将HDXRF法与电感耦合等离子体质谱(ICP-MS)法进行对比研究,探究HDXRF法在土壤重金属调查评估中的适用性。选取威宁县黑石头镇某地为研究区,基于地理探测器,以土壤理化性质(pH、有机质、CEC、黏粒、粉粒、砂粒)和地形因素(高程、坡度、坡向)9个因子为自变量,重金属(Cd、Pb、Zn、Cr、Cu、Ni)含量为因变量,分析两种检测方法下耕地土壤重金属空间分布规律及其影响因素。结果表明:6种重金属的HDXRF法与ICP-MS法检测值均服从正态分布,两种方法检测得到的土壤重金属在耕层和剖面的分布规律基本一致,从数据统计上看,仅HDXRF法Cu的值比ICP-MS法高约16%,其他元素无显著差异。HDXRF法与ICP-MS法所测相同重金属间均存在极显著正相关关系(P<0.01),与各影响因子间相关性分析结果基本一致,Cd、Pb、Zn、Ni与土壤理化性质,Cr与土壤理化性质、高程和坡向,Cu与CEC和高程间均存在极显著相关关系(P<0.01)。地理探测器交互探测结果显示,影响因子间交互作用均显示增强效应,pH、有机质、CEC与其他影响因子间交互作用是土壤Cd、Pb、Zn空间分异的主导因素,土壤Cr、Cu、Ni的空间分异是土壤理化性质和地形因素共同作用的结果,交互作用q值在0.200~0.700。综上,HDXRF法土壤重金属检测值的准确度和精密度较高,土壤重金属空间分布规律及影响因素与ICP-MS法结果一致,可用于土壤重金属的快速检测与评估。后续,可通过建立其与土壤pH、有机质、CEC和地形因子等的变量模型与ICP-MS法检测结果进行系统校正。

自动驾驶行业HD和SD融合地图问题的研究与展望

随着高精度地图数据在自动驾驶行业中的应用,基于高精度(HD)和标准(SD)融合地图进行实验室仿真和实车测试分析的应用也越来越广泛。高精度地图生产商在应用融合地图的过程中也存在很多基于HD和SD地图融合问题,本文分析和总结了当前自动驾驶行业HD和SD融合地图的组成部分、主要特点及存在的问题,并在此基础上讨论了融合地图相关问题的解决方案及行业展望。

Prevalence of metabolic syndrome in type 2 diabetic patients: A comparative study using WHO, NCEP ATP III, IDF and Harmonized definitions

To determine the prevalence of metabolic syndrome (MetS) in Malaysian type 2 diabetic patients using WHO, NCEP ATP III, IDF and the new Harmonized definitions, and the concordance between these definitions. This study involved 313 patients diagnosed with type 2 diabetes mellitus (T2DM) at two Malaysian tertiary hospitals. Socio-demographic data were assessed using a pre-tested interviewer-administered structured questionnaire. Anthropometric measurements were carried out according to standard protocols. Clinical and laboratory characteristics were examined. Kappa (k) statistics were used for the agreement between the four MetS definitions. The overall prevalence rates of MetS (95% CI) were 95.8% (93.6-98.1), 96.1% (94.0-98.3), 84.8% (80.8-88.9) and 97.7% (96.1-99.4) according to the WHO, NCEP ATP III, IDF and the Harmonized definitions, respectively. The Kappa statistics demonstrated a slight to substantial agreement between the definitions (k = 0.179-0.875, p k = 0.875, p hest specificity (100%) in identifying MetS. In conclusion, the new Harmonized criteria established the highest prevalence of MetS among the four definitions applied. There was a very good concordance between the WHO and NCEP ATP III criteria. The extremely high prevalence of MetS observed in type 2 diabetic patients indicates an impending pandemic of CVD risk in Malaysia. Aggressive treatment of MetS components is required to reduce cardiovascular risk in T2DM.

假性和真性视盘水肿患者HD-OCT检查结果的差异性分析

目的对比分析假性视盘水肿(PPE)患者和早期特发性颅内高压(IIH)相关的真性视盘水肿(TPE)患者的HD-OCT检查结果的差异性表现,为其鉴别诊断提供必要的临床依据。方法选取2015年1月至2021年6月在解放军总医院第三医学中心眼科医学部第一医学中心眼科确诊为PPE的24例(48眼)为PPE组,IIH引起TPE的49例(98眼)为TPE组。回顾性分析两组患者的HD-OCT表现,记录患者发病1个月、3个月、6个月视盘周围视网膜神经纤维层(RNFL)厚度、黄斑区神经节细胞层-内丛状层(GCIPL)厚度。以灵敏度、特异度及似然比分析GCIPL在PPE及IIH中的诊断价值,并观察PPE在HD-OCT检查中的形态学表现。结果TPE组患者平均RNFL厚度在发病1个月、3个月均明显高于PPE组(均为P<0.05);发病6个月时与PPE组患者平均RNFL厚度比较差异无统计学意义(P>0.05)。TPE组患者黄斑区平均GCIPL厚度及各象限GCIPL厚度在发病1个月、3个月和6个月均较PPE组患者薄,差异均有统计学意义(均为P<0.05)。以黄斑区GCIPL厚度正常为阳性判读,则诊断PPE灵敏度为97.92%,特异度为68.75%,阳性似然比为3.133,阴性似然比为0.031;以黄斑区GCIPL厚度变薄为阳性判读,则诊断IIH灵敏度为68.75%,特异度为97.92%,阳性似然比为33.050,阴性似然比为0.319。PPE组患者视盘周围卵圆形高反射肿块样结构14眼,视盘玻璃疣4眼,视盘倾斜6眼,两组其余患眼均未发现明显视盘结构异常。结论HD-OCT黄斑区GCIPL分析有助于鉴别TPE和PPE,发病3个月以内GCIPL变薄可以作为排除PPE的诊断依据,同时可以作为诊断TPE的支持条件;HD-OCT检查结果有利于分辨视盘结构异常,进一步对PPE进行分类。

基于Unity HDRP的虚拟室外场景设计与开发

随着虚拟引擎、插件、建模工具的不断更新发展,人们可以使用更简便的方法搭建更真实的虚拟环境。基于此,使用Unity高清渲染管线(HighDefinitionRenderPipeline,HDRP)技术和多种高效建模工具,实现了一个高质量的虚拟室外场景漫游系统,为用户提供了身临其境的沉浸式体验。

基于4K超高清HDR技术的电视制作研究

在各类互联网平台高度发达的今天,人们的娱乐方式更加多样化,传统电视媒体面临观众流失的风险。不断提升电视节目的制作质量,增强电视媒体的市场竞争力,是传统电视媒体在传媒市场上立足和发展的应有之义。利用4K超高清高动态范围(High Dynamic Range,HDR)技术制作电视节目,视频的垂直、水平分辨率都可大幅提升,还能改变视频的亮度、色域及伽马值,全面提高视频及图像质量,进而提高电视节目的制作质量。基于此,首先介绍4K超高清HDR技术,其次分析4K HDR视频制作流程、播出流程,最后阐述4K超高清HDR技术在电视制作中的应用及4K HDR视频制作、播放要注意的问题,以供参考。

高分辨CT扫描结合迭代重建技术在冠状动脉支架评估中的应用

目的探讨高分辨CT(HDCT)扫描结合迭代重建技术在冠状动脉支架血管评估中的价值。方法收集亳州市人民医院2020年8月至2022年12月经皮冠状动脉介入术后行冠状动脉血管造影(CCTA)检查病人61例。根据不同重建方法(Stand+ASiR-V:0%、Stand+ASiR-V:50%、HD Stand+ASiR-V:0%、HD Stand+ASiR-V:50%)重建出A、B、C、D四组图像。分别测量四组图像主动脉、心包脂肪、支架管腔内CT值、SD值(CT_(主)、SD_(主)、CT_(脂)、SD_(脂)、CT_(支)、SD_(支))、支架可视内径,计算CT_(差)、SNR_(主)、CNR_(主)、SNR_(支)、CNR_(支),评估图像主观质量评分,并进行统计学分析。结果A、B组CT_(支)(569.06±85.05、561.51±79.74比506.37±78.45、507.39±69.25)、CT_(差)(30.31±78.59、20.75±79.78比−32.83±74.98、−29.88±73.33)高于C、D组,支架可视内径低于C、D组[(1.85±0.46)mm、(1.89±0.41)mm比(2.15±0.43)mm、(2.14±0.45)mm],差异有统计学意义(P<0.05);A、B两组间及C、D两组间CT_(支)、CT_(差)值差异无统计学意义(P>0.05)。四组间CNR_(支)、SNR_(主)、CNR_(主)均为B组最高,A、D组次之,C组最低,差异有统计学意义(P<0.05)。支架可视内径对CT_(支)、SNR_(支)、CNR_(支)有负面影响,对SD支有正面影响,差异有统计学意义(P<0.05)。图像主观质量评分为D组最高,C组次之,A、B组最低,差异有统计学意义(P<0.001)。结论HDCT扫描能提高支架管腔清晰度,结合迭代重建技术能有效减低图像噪声,提高图像质量,有利于更准确评估冠状动脉支架血管情况。

融合高精度地图的多激光雷达路侧智能感知方法

在车路协同路侧感知研究中,由于点云数据量庞大且存在着不可避免的目标遮挡情况,导致检测效率低、目标轨迹不稳定和跟踪精度低的问题。针对上述问题,提出了1种融合高精度地图的多激光雷达路侧智能感知方法,通过融合高精度地图信息,提高感知结果的准确性和可靠性。该方法分为3个部分:①通过多激光雷达的标定结果,利用高精度地图完成三维点云区域中感兴趣区域的提取,从而有效减少待处理点云的数量,提升计算效率;②基于极化图高斯混合背景模型的背景建模方法,利用极化图完成运动目标快速检测,避免大规模激光点云的直接处理,有效提升检测效率;③利用车辆航向与车道线方向一致性约束,将高精度地图中的车道方向转化为卡尔曼滤波框架下的车辆状态线性约束,改善车辆检测与轨迹跟踪的性能。实验中,分别在仿真交叉路口与实车实验道路双T形路口对算法与模型进行测试验证。相比于其他方法,所提出的方法数据量减少了55%,目标检测准确率提高了12%,耗时减少了56%,目标跟踪的误差极值、误差均值以及均方根误差均有所降低。实验结果表明:所提的方法能有效融合高精度地图信息,在大范围道路场景下实现对道路运动目标的快速检测与稳定跟踪。