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基于改进FAWS的服装轮廓提取研究 被引量:3
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作者 王超 叶川 《北京服装学院学报(自然科学版)》 CAS 北大核心 2023年第1期16-22,共7页
轮廓提取技术现已广泛应用于医疗、工业、自动化以及服装类的平面加工领域。为了解决服装轮廓提取中服装轮廓提取精度低、计算量大、速度慢等问题,基于特征自适应阈值小波收缩降噪算法(Feature Adaptive Wavelet Shrinkage, FAWS)对图... 轮廓提取技术现已广泛应用于医疗、工业、自动化以及服装类的平面加工领域。为了解决服装轮廓提取中服装轮廓提取精度低、计算量大、速度慢等问题,基于特征自适应阈值小波收缩降噪算法(Feature Adaptive Wavelet Shrinkage, FAWS)对图像进行降噪,并且通过麻雀搜索算法(Sparrow search algorithm, SSA)对FAWS降噪算法中的参数p和q进行寻优,再经灰度化、二值化处理,完成图像预处理,最后采用Canny算法提取服装轮廓并对轮廓进行拟合。结果表明:该算法计算速度快,在处理部分细节时其像素值更接近原始图像,为服装轮廓提取提供了一种切实可行的方法。 展开更多
关键词 服装轮廓 faws SSA 轮廓提取
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一种基于机器视觉的平面加工机床控制系统的设计 被引量:6
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作者 潘盛湖 张小军 吕东 《工程设计学报》 CSCD 北大核心 2022年第6期784-792,共9页
针对服装、包装等加工行业中须将人工测量的纸质图纸或模型样件的尺寸信息录入计算机并转换成电子加工图纸而导致的加工周期长、生产效率低的问题,提出了一种基于机器视觉的平面加工机床控制系统,以实现对纸质图纸或模型样件的快速检测... 针对服装、包装等加工行业中须将人工测量的纸质图纸或模型样件的尺寸信息录入计算机并转换成电子加工图纸而导致的加工周期长、生产效率低的问题,提出了一种基于机器视觉的平面加工机床控制系统,以实现对纸质图纸或模型样件的快速检测。采用“ARM+DSP”方式搭建了主从式运动控制系统,设计了系统各部分功能模块。构建了“工控机+工业CCD (charge coupled device,电荷耦合器件)相机+光源控制”的视觉检测系统,结合FAWS (feature adaptive wavelet shrinkage,自适应特征的小波收缩)算法和麻雀搜索算法提出一种改进的FAWS算法进行图像降噪,并采用Canny算法进行图像边缘检测,实现图像轮廓的准确提取。设计了图像轮廓提取、轮廓数据转换为加工数据、数据通信等处理程序,实现了基于机器视觉的快速检测以及在系统加工过程中的人机交互。最后,对系统进行了实验测试,对实际加工效果进行了评价。结果表明,采用所研制的平面加工机床控制系统不仅能显著提高生产效率,而且能减小图像轮廓的误差。其性能稳定可靠,具有一定的工程实用价值。 展开更多
关键词 平面加工机床 视觉检测 图像处理 faws(feature adaptive wavelet shrinkage 自适应特征的小波收缩)算法 麻雀搜索算法 CANNY算法
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长春一汽生产区早期建筑外墙冻害及其机理的研究
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作者 张广平 耿新然 《吉林建筑大学学报》 2020年第3期48-54,86,共8页
长春一汽早期建筑遗产是我国近代重要的工业遗产,2016年入选第一批20世纪建筑遗产名录.本文以第七批全国重点文物保护单位—长春一汽生产区早期建筑为对象,调研了其外墙冻害形态,发现了冻害规律,同时根据这些早期建筑外墙的破损程度和... 长春一汽早期建筑遗产是我国近代重要的工业遗产,2016年入选第一批20世纪建筑遗产名录.本文以第七批全国重点文物保护单位—长春一汽生产区早期建筑为对象,调研了其外墙冻害形态,发现了冻害规律,同时根据这些早期建筑外墙的破损程度和墙材种类,研究了其外墙冻害的机理,以为相关建筑的修缮提供参考依据. 展开更多
关键词 长春一汽(Changchun FAW) 生产区早期建筑 冻害 机理 形态
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比特币挖矿攻击研究 被引量:8
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作者 韩健 邹静 +1 位作者 蒋瀚 徐秋亮 《密码学报》 CSCD 2018年第5期470-483,共14页
比特币是中本聪在2008年提出的一种数字货币,具有去中心化、去信任化、强健壮性、无监管、发行量固定等特点,一经推出就受到全世界的关注.作为当前最成功的数字货币,比特币基于P2P网络中众多节点构成的分布式数据库来确认并记录所有的... 比特币是中本聪在2008年提出的一种数字货币,具有去中心化、去信任化、强健壮性、无监管、发行量固定等特点,一经推出就受到全世界的关注.作为当前最成功的数字货币,比特币基于P2P网络中众多节点构成的分布式数据库来确认并记录所有的交易行为,利用工作量证明机制解决共识问题,并使用密码学的设计来确保货币流通的安全性.随着比特币价格的提升、用户数的增加,比特币的安全性越来越引起人们的重视,比如双重支付问题、交易延展性问题和隐私保护问题.针对比特币系统的不同方面出现了许多的攻击:针对网络的日蚀攻击、路由攻击,针对共识机制的挖矿攻击等等,特别是矿池出现后,出现了一些新的针对矿池的攻击行为.本文主要介绍针对比特币挖矿的各种攻击如51%攻击、区块截留攻击、自私挖矿和FAW攻击,分析攻击的基本思想、基本策略和现实危害,并介绍一些应对攻击的方案. 展开更多
关键词 比特币 51%攻击 区块截留攻击 自私挖矿 FAW攻击
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Bio-Efficacy of Plant-Derived Pesticides against Fall Armyworm (Spodoptera frugiperda) and Their Interactive Effects on Maize Agronomic Performance under Field Conditions 被引量:1
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作者 Junias Sogra Lux Jimmy +1 位作者 Kenndy Kamik Alex Galus 《Agricultural Sciences》 2023年第11期1535-1546,共12页
Maize is widely cultivated in Papua New Guinea (PNG) and provides farmers with nutrition and income. However, the fall armyworm (FAW) (Spodoptera frugiperda) (J.E. Smith) (Lepidoptera: Noctuidae) invasion is a threat ... Maize is widely cultivated in Papua New Guinea (PNG) and provides farmers with nutrition and income. However, the fall armyworm (FAW) (Spodoptera frugiperda) (J.E. Smith) (Lepidoptera: Noctuidae) invasion is a threat to its production and supply. Hence, this field experiment was conducted to assess the bio-efficacy of plant-derived pesticides (PDPs) against FAW and their interactive effects on maize agronomic performance under field conditions. The treatments studied were turmeric rhizome extract (TRE), neem leaf ash solution (NLAS), neem bark extract (NBE), and untreated plots (control) and were replicated 5 times using the randomized complete block design. The data were subjected to analysis of variance and means were separated by Fisher’s protected least significant difference test. The result showed that the application of PDPs significantly reduced FAW infestation during the period of peak infestation. At 33 DAS, NBE significantly had the lowest number of FAW larvae (0.6) [F (4, 15) = 5.11, p = 0.02] and FAW attack intensity (29.8%) [F (4, 15) = 8.69, p F (4, 15) = 3.58, p = 0.04] and had the highest number of harvested ears (5.0) [F (4, 15) = 3.72, p = 0.04] and fresh ear weights (447 g) [F (4, 15) = 4.65, p = 0.02] compared to NLAS. The TRE and NLAS had performed poorly relative to the control. Hence, NBE can be used to control FAW infestation at a period of high attack intensity (33 DAS). Moreover, this study will provide basic information for future studies on biopesticidal plant extracts as a control of FAW infestation under field conditions in PNG. 展开更多
关键词 FAW Larvae Attack Intensity Plant Height Harvested Ear Ear Fresh Weight
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Preliminary Discussion on Farm Animal Welfare and Its Influence on Brand and Consumption of Chinese Livestock Products
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作者 zhenling zhang kailang gu haitao zhang 《Agricultural Science & Technology》 CAS 2017年第12期2485-2487,共3页
Farm animal welfare(FAW) affects the health and sustainable development of animal husbandry. However, at present,there are still a lot of damage to FAW, and the situation of FAW in China is worrying. In this paper, th... Farm animal welfare(FAW) affects the health and sustainable development of animal husbandry. However, at present,there are still a lot of damage to FAW, and the situation of FAW in China is worrying. In this paper, the concept of FAW and brand are sketched and the importance of FAW is emphasized through analyzing the impact of FAW on the brand and consumption of animal products in China. Advices that more importance should be attached to FAW, animal welfare awareness should be promoted to publicity, and FAW legislation should be speed up are proposed. 展开更多
关键词 FAW Farm Animal Animal Welfare Livestock Products BRAND CONSUMPTION
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FAW Group Corporation
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《China's Foreign Trade》 2008年第21期48-50,共3页
FAW Group Corporation,formerly First Automobile Works,is China's oldest and largest automotive manufacturer.Head- quartered in China's northeastern city of Changchun within Jilin Province,the company can trace... FAW Group Corporation,formerly First Automobile Works,is China's oldest and largest automotive manufacturer.Head- quartered in China's northeastern city of Changchun within Jilin Province,the company can trace its roots back to July 15,1953 when the cornerstone of its first vehicle assembly plant was laid.Over a span of five decades,FAW Group 展开更多
关键词 BODY FAW Group Corporation LONG OVER CA
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Listed car companies but FAW see H1 profit slide
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《China's Foreign Trade》 2008年第17期12-12,共1页
All the listed auto-making companies in China have released their first-half profit reports. Except FAW Car, all other automakers have seen a downward slide in their H1 profits and in their profit-making capabilities.
关键词 汽车制造公司 FAW汽车 利润 下滑
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菲尼克斯IBS产品成功应用在一汽解放项目中
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《电气应用》 北大核心 2005年第4期14-14,共1页
经过沈阳办事处和IAS汽车工业组近一年的跟踪、洽谈和技术选型,一汽解放(FAW)新型卡车,车身车间全套IBS最近在中国、日本签单。该项目是Inerbus首次在国内最大国产卡车项目上的成功应用。
关键词 卡车 FAW IBS产品 菲尼克斯公司 汽车工业
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A Passage to Vietnam——Review of “FAW Group Cup China Famous Brand Auto Vietnam Show”
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《China's Foreign Trade》 2003年第6期3-5,共3页
关键词 中国 越南 贸易关系 “FAW杯中国汽车品牌越南展览会” 技术交流 企业合作
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China FAW Participates in The China Auto International(Syria)Tour
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作者 Wu Yan Che Qiang 《China's Foreign Trade》 2006年第4期30-,共1页
At the beginning of the new year, a new message was released from the Organization Committee of China Auto International Tour --China FAW Group Corporation and China League of Machinery Industry will jointly sponsor t... At the beginning of the new year, a new message was released from the Organization Committee of China Auto International Tour --China FAW Group Corporation and China League of Machinery Industry will jointly sponsor the 4nd China Auto International (Syria) Tour. 展开更多
关键词 AUTO China FAW Participates in The China Auto International Syria)Tour
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核一壳结构多元共聚乳胶的研究与应用
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作者 贾鸿远 《适用技术市场》 1997年第9期13-14,共2页
核一壳结构苯丙乳胶是由苯乙烯、丙烯酸酯、丙烯酸、N—羟甲基两烯酰胺等多元单体共聚而成。具有"软"包"硬"的结构。该胶的粘接性能好,交联后,耐水性好,粘接的制品不透胶,手感柔软。适于聚氨酯软泡沫与聚酯织物和 P... 核一壳结构苯丙乳胶是由苯乙烯、丙烯酸酯、丙烯酸、N—羟甲基两烯酰胺等多元单体共聚而成。具有"软"包"硬"的结构。该胶的粘接性能好,交联后,耐水性好,粘接的制品不透胶,手感柔软。适于聚氨酯软泡沫与聚酯织物和 PVC 薄膜的粘接。可广泛用于轿车、飞机内装璜、沙发座垫以及鞋用、衣用材料等。 展开更多
关键词 核壳结构 苯丙乳胶 FAW型 乳胶
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FAW型乳液胶粘剂的研制
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作者 贾鸿远 周云静 李静 《河北化工》 1989年第3期10-13,共4页
一、引言FAW 型乳液胶粘剂是以丙烯酸酯和苯乙烯为主要原料的共聚乳液。这类乳液由于配方和工艺的不同,可以生产出性质、用途各异的胶粘剂和涂料。我们研制的FAW型乳液胶粘剂主要用于粘接聚氨醋软泡沫和聚醋织物。
关键词 FAW 聚氨醋 耐水性 聚氨酷 预聚体 粘接强度 透胶 引发剂 加入方式 涂胶
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FAW Group and Its Development Considerations
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《中国汽车(英文版)》 1997年第1期29-30,共2页
Ⅰ. Status-quo of FAW Group As Chinese biggest auto production base, FAW Group began its step in 1953. Through more than 40 years of endeavors, FAW Group has become a giant auto group possessing complete product-mix, ... Ⅰ. Status-quo of FAW Group As Chinese biggest auto production base, FAW Group began its step in 1953. Through more than 40 years of endeavors, FAW Group has become a giant auto group possessing complete product-mix, strong tech-econ capabilities, 展开更多
关键词 WILL more FAW Group and Its Development Considerations THAN
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SAIC PK FAW
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《中国汽车(英文版)》 2007年第9期6-8,共3页
The total vehicle sales in 2006 were 7 million units, making China the world second largest market after the US. The top 10 vehicle makers had achieved nearly 85 percent of the sales, in which the market shares of SAI... The total vehicle sales in 2006 were 7 million units, making China the world second largest market after the US. The top 10 vehicle makers had achieved nearly 85 percent of the sales, in which the market shares of SAIC and FAW are 16.96 percent and 16.15 percent respectively. 展开更多
关键词 PK SAIC PK FAW GM
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FAW and Dongfeng’s absence from the Shanghai Auto Show-second thoughts
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《中国汽车(英文版)》 2007年第6期1-,共1页
The 2007 Shanghai Auto Show attracted thousands of exhibitors, but not FAW Group or Dongfeng Group. A lot of people felt disappointed at being unable to witness more shinning cars and pretty young ladies. It is said t... The 2007 Shanghai Auto Show attracted thousands of exhibitors, but not FAW Group or Dongfeng Group. A lot of people felt disappointed at being unable to witness more shinning cars and pretty young ladies. It is said that Dongfeng Group has decided to attend no other events than the Beijing and Wuhan shows. FAW’s choices are Beijing and the Changchun Motor Show. 展开更多
关键词 SHOW FAW and Dongfeng s absence from the Shanghai Auto Show-second thoughts AUTO
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Auto Catalogue of FAW Group (Ⅰ)
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作者 Zhao Peinan, FAW 《中国汽车(英文版)》 1995年第1期27-28,共2页
The description given below will cover all the complete vehicles produced by the FAW Group during the "Eighth-Five-Year-Plan", which will surely help you with fully understanding the motor vehicle composition.
关键词 Auto Catalogue of FAW Group WILL
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Auto Catalog of FAW Group (Ⅱ)
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作者 Zhao Peinan, First Auto Group 《中国汽车(英文版)》 1995年第2期21-23,共3页
关键词 Auto Catalog of FAW Group
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FAW and Jinbei Hand in Hand
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《中国汽车(英文版)》 1995年第3期18-18,共1页
On Feb. 23rd., 1995, the signing ceremony of Jinbei Automotive Company Limited (hereinafter refered to Jinbei) entering China First Automotive Group Corporation (hereinafter refered to FAW) and carrying out assets int... On Feb. 23rd., 1995, the signing ceremony of Jinbei Automotive Company Limited (hereinafter refered to Jinbei) entering China First Automotive Group Corporation (hereinafter refered to FAW) and carrying out assets integration was held in Shenyang Jinbei Complex, which marks the set up of First Auto Jinbei Automotive Co., Ltd. (hereinafter refered to FAJB). 展开更多
关键词 FAW and Jinbei Hand in Hand
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