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CCPIT Briefed Press about the 13th China-LAC Business Summit
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《China's Foreign Trade》 2019年第3期2-3,共2页
CCPIT Chairperson Gao Yan said,the 13th China-LAC Business Summit will be held from December 9 to 11 in Panama City.The summit will focus on Belt and Road cooperation between China and Latin America.With the theme of... CCPIT Chairperson Gao Yan said,the 13th China-LAC Business Summit will be held from December 9 to 11 in Panama City.The summit will focus on Belt and Road cooperation between China and Latin America.With the theme of“Deepening Belt and Road Cooperation Between China-LAC for Common Development and Prosperity”.The forum will explore more opportunities for China-LAC cooperation in the areas of infrastructure,finance,trade,services and the development of SMEs,and promote steady development and prosperity of the two sides. 展开更多
关键词 China LAC CCPIT briefed PRESS ABOUT the 13th China-LAC BUSINESS SUMMIT
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面向复杂环境的特征匹配算法 被引量:2
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作者 赵悦 储开斌 +1 位作者 张继 冯成涛 《计算机应用与软件》 北大核心 2025年第1期264-270,293,共8页
针对传统特征点提取受光照、视角和图像噪声变化影响,导致后续光流算法中特征点跟踪的准确率不高问题,提出一种面向复杂环境的特征点匹配方法。启发于SuperPoint网络在特征提取的强鲁棒性,在此基础上构建Hessian矩阵对检测出的特征点进... 针对传统特征点提取受光照、视角和图像噪声变化影响,导致后续光流算法中特征点跟踪的准确率不高问题,提出一种面向复杂环境的特征点匹配方法。启发于SuperPoint网络在特征提取的强鲁棒性,在此基础上构建Hessian矩阵对检测出的特征点进行再筛选;针对SuperPoint的半稠密描述符存在冗余的描述符信息,提出用传统的BRIEF描述符替代,对筛选后的特征点进行提取,利用BruteForce匹配法进行特征匹配。实验结果表明,该方法能有效缓解光照、视角和噪声变化对特征点提取的影响,可以得到较好的特征匹配效果。 展开更多
关键词 特征提取 BRIEF描述符 特征匹配 光流
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The overall conversion rate of international standards into China’s national standards reaches 86%
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《China Standardization》 2025年第6期8-8,共1页
At the policy briefing held by the State Council Information Office on October 31,Guo Huanxin,Director-General of the Department of Metrology,State Administration for Market Regulation(SAMR),said that the overall conv... At the policy briefing held by the State Council Information Office on October 31,Guo Huanxin,Director-General of the Department of Metrology,State Administration for Market Regulation(SAMR),said that the overall conversion rate of international standards into China’s national standards has reached 86%by the end of September 2025,achieving the goal set in the National Standardization Development Outline,and providing sound support for green and low-carbon development. 展开更多
关键词 policy briefing national standards international standards conversion rate green development low carbon development
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Optimization of Technical Briefing Management Process in Construction Projects
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作者 Zhiwei Zhuang 《Journal of World Architecture》 2025年第4期89-95,共7页
This paper examines the challenges in the technical briefing process for construction projects,including a three-level system and issues related to formalization.An optimization approaches was introduced based on the ... This paper examines the challenges in the technical briefing process for construction projects,including a three-level system and issues related to formalization.An optimization approaches was introduced based on the PDCA cycle,alongside the application of BIM and AR technologies.The key preparatory measures were outlined in this study and the functions of the management system was mentioned.Through case comparisons,this paper demonstrated that these optimizations can significantly improve efficiency and quality,support the development of an evaluation system to verify results,and highlight the critical role of organizational support. 展开更多
关键词 Construction project Technical briefing Process optimization
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Quality of life in patients with multidrug-resistant tuberculosis under programmatic condition using World Health Organization's Quality of Life Brief instrument:A case-control study
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作者 Oki Nugraha Putra Dewi Ramdani +3 位作者 Aisyah Fitri Kurniawati Telly Purnamasari Julaeha Julaeha Nurul Damayanti 《Asian Pacific Journal of Tropical Medicine》 2025年第8期363-371,共9页
Objective:To evaluate and compare the quality of life(QoL)in patients with multidrug-resistant(MDR-TB)and drug-sensitive(DS-TB)as well as to investigate factors associated with QoL among MDR-TB patients in real-world ... Objective:To evaluate and compare the quality of life(QoL)in patients with multidrug-resistant(MDR-TB)and drug-sensitive(DS-TB)as well as to investigate factors associated with QoL among MDR-TB patients in real-world scenarios at the Haji Hospital,Surabaya.Methods:We conducted a case-control study from June to December 2024.MDR-TB and DS-TB patients were classified into case and control groups,respectively.We used the World Health Organization’s Quality of Life Brief(WHOQOL-BREF)instrument and Patient Health Questionnaire-9(PHQ-9)to assess QoL and depression levels,respectively.Multivariate analysis was used to analyze factors associated with QoL of patients with MDR-TB.Results:Forty-one patients with MDR-TB and 43 with DS-TB were enrolled in the study.A mean score for all domains(physical,psychological,social relationship,environmental)and total mean score of WHOQOL-BREF was significantly lower in MDR-TB than those with DS-TB(P<0.05).The prevalence of depression and the mean score of PHQ-9 were significantly higher in MDR-TB than in DS-TB(P<0.05).PHQ-9 negatively correlates with the WHOQOL-BREF score(r=-0.502,P<0.05)among MDR-TB patients.MDR-TB patients with depression were significantly associated with low QoL in the physical(OR 3.611;95%CI 2.393-6.951;P=0.029),psychological(OR 1.672;95%CI 1.179-5.941;P=0.021),social relationship(OR 2.586;95%CI 1.611-2.909;P=0.014),and environmental domains(OR 1.926;95%CI 1.047-2.147;P=0.048).Conclusions:MDR-TB patients had worse QoL than DS-TB.Those with depression were associated with low QoL.Strategies that identify and tackle alterations in the QoL for MDR-TB patients are necessary during TB treatment. 展开更多
关键词 Quality of life MDR-TB TUBERCULOSIS World Health Organization’s Quality of Life Brief instrument DEPRESSION
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Alcohol use-related problems in general hospitals and primary care settings:Screening,intervention,and referral to treatment
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作者 Xiao-Fang Lv Rui-Hua Li 《World Journal of Psychiatry》 2025年第11期28-36,共9页
Alcohol use has contributed to large disease burdens,and alcohol-related problems are prevalent among patients in general hospitals and primary care settings.This review aims to deepen the understanding of screening,i... Alcohol use has contributed to large disease burdens,and alcohol-related problems are prevalent among patients in general hospitals and primary care settings.This review aims to deepen the understanding of screening,intervention,and treatment referral for alcohol-related problems in these settings.We searched the literature published in English from PubMed,ScienceDirect,and the World Health Organization website.We found that while a series of screening tools can be used,screening rates were low.The awareness of screening should be strengthened.Brief interventions and pharmacotherapy are the two main methods used in general hospitals and primary care settings,with complementary and alternative medicine considered under the framework of integrative medicine.Individuals with severe alcohol-related problems or alcohol use disorders should be referred to specialty treatment for alcohol abuse,but referral is sometimes ignored.A gap exists between general hospitals/primary care facilities and specialized alcohol-related treatment providers.In conclusion,screening,intervention,and referral to treatment comprise a continuum for patients with alcohol-related problems.Opportunities to prevent and manage these problems in general hospitals and primary care settings are abundant,and taking action will promote the addressing of this public health issue. 展开更多
关键词 Alcohol use disorder TREATMENT General hospital Primary care Screening brief intervention and referral to treatment
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融合BRIEF与ICP点云配准的零部件姿态估计方法
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作者 田华平 陈鹏飞 +2 位作者 杨涛 何培垒 巩鑫 《计算机与数字工程》 2024年第5期1383-1387,1411,共6页
物体姿态估计在增强现实、自动驾驶和机器人操作等领域具有重要意义。在机器人抓取与辅助装配过程中实时并准确地估计目标姿态极其重要,为提高装配过程中零部件的抓取与监控的实时性与精度,研究了基于多视图特征库估计目标姿态的方法,... 物体姿态估计在增强现实、自动驾驶和机器人操作等领域具有重要意义。在机器人抓取与辅助装配过程中实时并准确地估计目标姿态极其重要,为提高装配过程中零部件的抓取与监控的实时性与精度,研究了基于多视图特征库估计目标姿态的方法,设计融合BRIEF(Binary Robust Independent Elementary Features)特征匹配与ICP(Iterative Closest Point)点云配准的零部件姿态估计方法对零部件姿态角进行估计测量。以法兰、扳手、电钻等零件工具进行实验,实验结果表明融合BRIEF特征匹配与ICP点云配准的姿态估计方法运行耗时约200ms,而姿态估计的最大误差角度为4.5°,能有效保证零部件姿态估计方法的实时性与精度,可应用于机器人抓取作业、辅助装配监控等。 展开更多
关键词 K-D树索引 BRIEF特征匹配 ICP点云配准 姿态估计
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Enhanced Object Detection and Classification via Multi-Method Fusion
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作者 Muhammad Waqas Ahmed Nouf Abdullah Almujally +2 位作者 Abdulwahab Alazeb Asaad Algarni Jeongmin Park 《Computers, Materials & Continua》 SCIE EI 2024年第5期3315-3331,共17页
Advances in machine vision systems have revolutionized applications such as autonomous driving,robotic navigation,and augmented reality.Despite substantial progress,challenges persist,including dynamic backgrounds,occ... Advances in machine vision systems have revolutionized applications such as autonomous driving,robotic navigation,and augmented reality.Despite substantial progress,challenges persist,including dynamic backgrounds,occlusion,and limited labeled data.To address these challenges,we introduce a comprehensive methodology toenhance image classification and object detection accuracy.The proposed approach involves the integration ofmultiple methods in a complementary way.The process commences with the application of Gaussian filters tomitigate the impact of noise interference.These images are then processed for segmentation using Fuzzy C-Meanssegmentation in parallel with saliency mapping techniques to find the most prominent regions.The Binary RobustIndependent Elementary Features(BRIEF)characteristics are then extracted fromdata derived fromsaliency mapsand segmented images.For precise object separation,Oriented FAST and Rotated BRIEF(ORB)algorithms areemployed.Genetic Algorithms(GAs)are used to optimize Random Forest classifier parameters which lead toimproved performance.Our method stands out due to its comprehensive approach,adeptly addressing challengessuch as changing backdrops,occlusion,and limited labeled data concurrently.A significant enhancement hasbeen achieved by integrating Genetic Algorithms(GAs)to precisely optimize parameters.This minor adjustmentnot only boosts the uniqueness of our system but also amplifies its overall efficacy.The proposed methodologyhas demonstrated notable classification accuracies of 90.9%and 89.0%on the challenging Corel-1k and MSRCdatasets,respectively.Furthermore,detection accuracies of 87.2%and 86.6%have been attained.Although ourmethod performed well in both datasets it may face difficulties in real-world data especially where datasets havehighly complex backgrounds.Despite these limitations,GAintegration for parameter optimization shows a notablestrength in enhancing the overall adaptability and performance of our system. 展开更多
关键词 BRIEF features saliency map fuzzy c-means object detection object recognition
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Impact of solution-focused brief therapy and vacuum sealing drainage on mental health of wound care patients
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作者 Wen-Juan Shi Jian Zhou +2 位作者 Qi-Liang Xu Yi Jiang Qiang Dai 《World Journal of Psychiatry》 SCIE 2024年第12期1854-1859,共6页
BACKGROUND Improving mental health is crucial for patients who require wound treatment.AIM To analyze the effects of solution-focused brief therapy(SFBT)combined with vacuum sealing drainage on the psychological healt... BACKGROUND Improving mental health is crucial for patients who require wound treatment.AIM To analyze the effects of solution-focused brief therapy(SFBT)combined with vacuum sealing drainage on the psychological health of patients undergoing wound treatment,providing a basis for selecting wound treatment protocols.METHODS A total of 102 patients undergoing wound treatment were included,with the study period from March 2020 to March 2024.Sex was not a factor,and patients were randomly assigned to two groups of 51 cases each.The control group received negative pressure wound therapy(NPWT),while the experimental group received NPWT plus SFBT.The recovery of wounds,granulation tissue scores,and psychological health levels were compared between the two groups.Statistical analysis was conducted using SPSS Windows software version 26.0 and GraphPad Prism 8.0.RESULTS Post-treatment,the levels of high-sensitivity C-reactive protein,white blood cell count,and lactate dehydrogenase in the experimental group were significantly lower than those in the control group(P<0.05).The two groups had no significant difference in granulation tissue scores(P<0.05).The psychological health level in the experimental group was significantly higher than in the control group(P<0.05).CONCLUSION The combination of SFBT and NPWT accelerates wound healing,promotes granulation tissue growth,and improves psychological well-being,making it a valuable approach for clinical application. 展开更多
关键词 Solution-focused brief therapy Negative pressure wound therapy Psychological health Wound healing Clinical treatment
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基于AGAST-BRIEF的图像匹配融合算法
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作者 谷学静 刘艳佳 +1 位作者 周记帆 肖军发 《仪表技术与传感器》 CSCD 北大核心 2024年第10期78-83,110,共7页
针对传统算法AGAST在图像处于复杂场景条件下进行图像检测时,造成图像匹配结果精度低和实时性差等问题,提出一种基于AGAST-BRIEF的图像匹配融合算法。首先,利用高斯滤波对图像进行预处理,实现去除图像噪声干扰,保留图像边缘信息的效果,... 针对传统算法AGAST在图像处于复杂场景条件下进行图像检测时,造成图像匹配结果精度低和实时性差等问题,提出一种基于AGAST-BRIEF的图像匹配融合算法。首先,利用高斯滤波对图像进行预处理,实现去除图像噪声干扰,保留图像边缘信息的效果,通过AGAST与尺度空间理论相结合进行特征提取;然后,使用BRIEF描述子对图像中的关键点进行描述,提高特征匹配效率;最后,采用FLANN算法得到初次匹配对,使用GMS与改进的RANSAC算法对初次匹配结果进行二次筛选,得到图像特征精匹配。实验结果表明:所提算法相较于SIFT、AKAZE、KAZE算法匹配准确率提高,匹配运行时间最短,具有良好的鲁棒性。 展开更多
关键词 图像匹配 快速最近邻逼近搜索函数库(FLANN) 自适应通用加速分割检测(AGAST) 二进制鲁棒独立基本特征(BRIEF) 基于网格的运动统计(GMS) 随机抽样一致算法(RANSAC)
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NEWS in brief
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《China Report ASEAN》 2024年第8期6-9,共4页
Beijing,Hanoi vow to advance traditional ties.China rolled out the red carpet on August 19 for Vietnam’s top leader To Lam,and the two socialist countries vowed to further enhance their comprehensive strategic cooper... Beijing,Hanoi vow to advance traditional ties.China rolled out the red carpet on August 19 for Vietnam’s top leader To Lam,and the two socialist countries vowed to further enhance their comprehensive strategic cooperative partnership and advance the building of a community with a shared future that carries strategic significance. 展开更多
关键词 STRATEGIC NEWS BRIEF
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BRIEF算法在基于增强现实的产品装配引导中的应用研究 被引量:6
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作者 王峻峰 陈亭 +1 位作者 李世其 徐迟 《机械科学与技术》 CSCD 北大核心 2013年第2期213-216,共4页
面向增强现实环境下采用零件自然特征的装配引导应用,提出一种基于BRIEF算法的虚实装配场景注册融合方法。利用BRIEF算法进行装配零件图像自然特征的提取,建立零件图像的特征描述符。通过海明距离进行装配引导过程中零件图像特征描述符... 面向增强现实环境下采用零件自然特征的装配引导应用,提出一种基于BRIEF算法的虚实装配场景注册融合方法。利用BRIEF算法进行装配零件图像自然特征的提取,建立零件图像的特征描述符。通过海明距离进行装配引导过程中零件图像特征描述符的匹配,实现虚实装配零件的注册;同时将虚拟装配信息在真实装配场景中叠加,用于引导用户完成装配作业过程。实验结果表明:利用该算法进行虚实注册具有较好的鲁棒性和实时性,能够较好地应用于增强现实环境下的产品装配引导过程中。 展开更多
关键词 增强现实 BRIEF算法 特征匹配 装配引导
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一种局部二值模式图像特征点匹配算法 被引量:8
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作者 王强 李柏林 +1 位作者 罗建桥 陈小艳 《计算机应用研究》 CSCD 北大核心 2019年第1期268-272,共5页
针对图像匹配问题进行了研究,提出了一种改进BRIEF算法的特征点匹配算法。该算法利用随机点与特征点之间的差分大小和差分幅值关系来生成特征点描述算子。针对BRIEF对噪声敏感问题,因为小的像素幅值差分更易受到噪声影响,为了抑制噪声,... 针对图像匹配问题进行了研究,提出了一种改进BRIEF算法的特征点匹配算法。该算法利用随机点与特征点之间的差分大小和差分幅值关系来生成特征点描述算子。针对BRIEF对噪声敏感问题,因为小的像素幅值差分更易受到噪声影响,为了抑制噪声,通过设置小像素差分阈值,差分在阈值内的设置为不确定位,然后通过其邻域均值来决定不确定位的值。特征点匹配使用描述算子之间的汉明距离进行比较来完成。实验将BRIEF和ORB算法进行了比较,证明该算子具有更高的判别性,计算简单且具有很好的噪声抑制性能,运行速度快,匹配准确率更高。 展开更多
关键词 BRIEF ORB 特征点匹配算子 局部二值模式
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基于ORB和GroupSAC复杂场景视频图像的快速角点检测 被引量:2
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作者 王丽芳 赵雅楠 +1 位作者 秦品乐 高媛 《科学技术与工程》 北大核心 2017年第2期88-94,共7页
针对传统的角点检测在复杂场景视频图像中角点检测的准确率不高、实时性差的问题,提出了基于ORB特征提取和GroupSAC的快速角点检测算法。首先在O-FAST中加入图像金字塔对图像进行角点检测,保证了视频图像角点检测的尺度不变性,然后利用... 针对传统的角点检测在复杂场景视频图像中角点检测的准确率不高、实时性差的问题,提出了基于ORB特征提取和GroupSAC的快速角点检测算法。首先在O-FAST中加入图像金字塔对图像进行角点检测,保证了视频图像角点检测的尺度不变性,然后利用灰度质心对求得的主方向进行BRIEF特征提取,保证了视频角点检测的旋转不变性。最后利用基于混合二项式模型的GroupSAC算法去除误差点,提高了角点检测的准确率。实验证明,在复杂场景视频图像中,如在光照变化、尺度变化、旋转变化以及遮挡图像的情况下,该方法具有较高的准确性、较低的时间复杂度和较强的鲁棒性,实现了对复杂场景视频图像的快速角点检测。 展开更多
关键词 ORB O_FAST BRIEF GroupSAC 复杂场景 视频图像 快速角点检测
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一种基于阶阵列的BRIEF特征描述子 被引量:3
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作者 张娓娓 赵金龙 +2 位作者 何佳 陈绥阳 王杰 《计算机技术与发展》 2023年第5期81-87,共7页
局部特征匹配是机器视觉研究领域中的一个基础问题,也是该领域的研究热点之一,在目标识别、目标跟踪、场景区分等应用中具有重要的作用。而在局部特征匹配研究过程中,如何在满足多种图像变换的前提下,设计一种高效的图像特征描述子是需... 局部特征匹配是机器视觉研究领域中的一个基础问题,也是该领域的研究热点之一,在目标识别、目标跟踪、场景区分等应用中具有重要的作用。而在局部特征匹配研究过程中,如何在满足多种图像变换的前提下,设计一种高效的图像特征描述子是需要解决的一个关键问题。现有的特征描述子,如SIFT和SURF,计算复杂性较高,难以胜任实时视频或移动计算环境;BRIEF特征描述子计算简单,匹配效率高,能满足实时视频或者移动计算环境的要求,但其仅考虑了单个像素,不具备方向,也就不具有旋转不变性。在BRIEF特征描述子的基础上,该文选择多个特征点,并引入阶排列方法,提出一种改进的特征描述子OPoBRIEF。相对于传统的特征描述子,OPoBRIEF能够包含更多的局部特征信息,并且计算复杂性较低。通过特征描述子稳定性实验,表明OPoBRIEF比BRRIEF具有更高的匹配正确率和更好的稳定性。而特征描述子旋转不变性的实验则表明,在旋转角度为10~12区间,OPoBRIEF与SIFT效果相当,但明显优于ORB算法。 展开更多
关键词 描述子 二值模式 BRIEF 阶排列 旋转不变性
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BRIEF和QEC在制鞋作业工人肌肉骨骼疾患研究中的应用 被引量:7
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作者 许旭艳 沈波 +3 位作者 陈艳 刘佩芳 高雅 王忠旭 《中国工业医学杂志》 CAS 2017年第5期328-331,347,F0003,共6页
目的探讨制鞋作业工人职业性肌肉骨骼疾患(work-related musculoskeletal disorders,WMSDs)相关工效学因素。方法应用美国工效学基本因素检查表(baseline risk identification of ergonomic factors,BRIEF)观测某制鞋生产企业工作人员... 目的探讨制鞋作业工人职业性肌肉骨骼疾患(work-related musculoskeletal disorders,WMSDs)相关工效学因素。方法应用美国工效学基本因素检查表(baseline risk identification of ergonomic factors,BRIEF)观测某制鞋生产企业工作人员的作业姿势、力量、持续时间和动作频率等工效学负荷,采用英国快速暴露检查表(quick exposure check,QEC)对制鞋作业工人发生WMSDs的风险进行工效学评估。结果制鞋作业工人WMSDs工效学负荷发生风险主要是颈部、手腕和肩部。不同工作岗位、身体不同部位的工效学负荷风险等级存在差异。多个岗位同时存在多部位的高风险工效学负荷。刷胶、贴底、上钉、削皮、针车等是颈部和手腕的WMSDs高风险作业。结论制鞋作业工人WMSDs发生风险以颈部最高,同时伴有手腕、肩部等多部位。人员集中分布于刷胶、贴底、上钉、削皮、针车等岗位。工效学危险因素主要来自不良作业姿势、持续过长和频繁重复性操作。在预防和控制WMSDs发生方面,应加强对上述工效学危险因素的管理与控制。 展开更多
关键词 工效学基本因素检查表(BRIEF) 快速暴露检查表(QEC) 制鞋业 职业性肌肉骨骼疾患(WMSDs) 工效学负荷
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基于改进SIFT的室内全景图像配准算法研究 被引量:5
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作者 王博 管永红 刘洋 《电子设计工程》 2021年第6期83-87,共5页
图像配准技术是计算机视觉领域的重要基础,SIFT算法作为高效的特征提取描述算法在图像配准领域有着广泛应用。为了解决传统SIFT算法在图像特征点提取中性能较低的问题,提出了一种改进的SIFT图像特征匹配算法。该改进算法在原始SIFT算法... 图像配准技术是计算机视觉领域的重要基础,SIFT算法作为高效的特征提取描述算法在图像配准领域有着广泛应用。为了解决传统SIFT算法在图像特征点提取中性能较低的问题,提出了一种改进的SIFT图像特征匹配算法。该改进算法在原始SIFT算法的基础上,优化了SIFT算法中构建高斯金字塔的流程,并采用BRIEF特征描述子替换SIFT特征描述子。实验结果证明,该算法与原始SIFT相比,配准时间缩短为原来时间的2/3、配准准确率提高了10多个百分点,可以高效完成室内全景图像特征匹配工作。 展开更多
关键词 计算机视觉 图像配准 SIFT 高斯金字塔 BRIEF 特征描述子
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一种改进A-KAZE算法的特征点匹配方法 被引量:2
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作者 严利民 张婷婷 《微电子学与计算机》 北大核心 2019年第12期64-68,共5页
提出了一种改进的A-KAZE算法,利用非线性扩散滤波策略改善了传统高斯核函数构建尺度空间的不足,在实现局部自适应滤除细节的同时保留了目标的边界,且检测到的特征点具有尺度不变性;结合特征点主方向和改进的BRIEF描述子解决了匹配中旋... 提出了一种改进的A-KAZE算法,利用非线性扩散滤波策略改善了传统高斯核函数构建尺度空间的不足,在实现局部自适应滤除细节的同时保留了目标的边界,且检测到的特征点具有尺度不变性;结合特征点主方向和改进的BRIEF描述子解决了匹配中旋转不变性的问题,以二进制编码形式缩短了匹配时间,并分别在室内和室外环境下进行特征点匹配实验,与ORB、BRISK等算法进行了比较,结果证明改进的算法结合了A-KAZE与BRIEF算法的优势,实现了高准确率和高效的图像特征点匹配. 展开更多
关键词 特征点匹配 A-KAZE算法 非线性尺度空间 BRIEF描述子
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面向煤矸体积检测的图像特征匹配算法研究 被引量:1
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作者 曹现刚 袁娜 +2 位作者 王鹏 吴旭东 岳东 《煤炭技术》 CAS 北大核心 2023年第2期175-178,共4页
针对煤矸体积检测过程中,SIFT特征匹配算法因时间复杂度高无法满足实时性要求,提出一种基于BRIEF描述子的改进SIFT算法。首先利用BRIEF描述子替代SIFT算法的128维特征向量,利用最小距离筛选机制结合RANSAC算法完成误匹配点对的去除。实... 针对煤矸体积检测过程中,SIFT特征匹配算法因时间复杂度高无法满足实时性要求,提出一种基于BRIEF描述子的改进SIFT算法。首先利用BRIEF描述子替代SIFT算法的128维特征向量,利用最小距离筛选机制结合RANSAC算法完成误匹配点对的去除。实验证明:提出的算法相较SIFT算法匹配速度提高了41.3%,而煤矸体积计算速度提高了20.2%。 展开更多
关键词 煤矸体积 双目视觉 特征匹配 SIFT BRIEF
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