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煤矿测量多图种微机绘图系统
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作者 李国林 汤小林 +1 位作者 谢宏全 刘习彬 《矿山测量》 2000年第1期22-24,共3页
文中简要介绍了煤矿测量多图种微机绘图系统的开发背景、主要功能设计、数据采集、数据处理、图形生成和界面设计等内容 ,其目的在于让广大测绘工作人员更多的了解微机制图技术 ,促进该技术的加速发展。
关键词 煤矿 测量 图种 微机 系统
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川滇黔桂76种元素地球化学图编制中分析方法与分析质量研究(二) 关于8个实验室对银元素分析的考核
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作者 陈明 《地质通报》 CAS CSCD 北大核心 2002年第6期285-291,共7页
国内8个实验室对川滇黔桂相同的76个泛滥平原沉积物样品的76种元素进行了分析测试,目的在于探索更有效的分析质量的评价方案,以便为编制相应的地球化学图优选不同元素的最佳分析方法。利用参考值、样本的统计学参数、相似性、密度分布... 国内8个实验室对川滇黔桂相同的76个泛滥平原沉积物样品的76种元素进行了分析测试,目的在于探索更有效的分析质量的评价方案,以便为编制相应的地球化学图优选不同元素的最佳分析方法。利用参考值、样本的统计学参数、相似性、密度分布函数、地球化学场的空间结构和地球化学异常的重合性等对Ag元素的分析数据作了评价,不但要求分析数据在绝对值方面有一定的精度,还强调了化探数据的空间属性,要求分析数据的空间分布方面也尽量与理想的地球化学图之间具有一致性。 展开更多
关键词 勘查地球化学 分析方法 质量监控 76元素填
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十四种八卦图比较之管见——中国易学思维研究
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作者 王凤显 《社科纵横》 2004年第3期93-96,共4页
根据有关古籍中八卦次序 ,列出八卦图多达十四种 ;经过逐一分析比较 ,指出史称的“先天八卦” ,不合易道 ,是假托伏羲之名而作 ;文王八卦有三种八卦图 ,而不只是一种 ;伏羲连山易、神农归藏易、长沙帛书易 ,都与文王八卦次序之一种图式... 根据有关古籍中八卦次序 ,列出八卦图多达十四种 ;经过逐一分析比较 ,指出史称的“先天八卦” ,不合易道 ,是假托伏羲之名而作 ;文王八卦有三种八卦图 ,而不只是一种 ;伏羲连山易、神农归藏易、长沙帛书易 ,都与文王八卦次序之一种图式相同。 展开更多
关键词 八卦十四 洛书数字八卦 易学思维
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外汇币种走势图引发的不正当竞争案
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作者 靳起 潘伟 《电子知识产权》 2001年第7期33-35,共3页
案情简介 北京金融城网络有限公司(以下简称金融城公司)于2000年2月开办了"295"网站,其网址为www.295.net.cn.成都财智软件有限公司(以下简称财智公司)在此前开设了财智网,其网址为www.imoney.com.cn.两个公司所开设的网站中... 案情简介 北京金融城网络有限公司(以下简称金融城公司)于2000年2月开办了"295"网站,其网址为www.295.net.cn.成都财智软件有限公司(以下简称财智公司)在此前开设了财智网,其网址为www.imoney.com.cn.两个公司所开设的网站中均有关于金融信息服务的内容. 展开更多
关键词 外汇币走势 不正当竞争案 北京金融城网络有限公司 著作权法 案例分析
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编制上海城市交通地图的几点思考 被引量:1
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作者 陆明华 《上海城市规划》 1998年第1期35-36,共2页
近几年来,地图的版本越出越多,质量却有所下降。本文对如何编制好上海城市交通图提出了一些良好的建议。
关键词 交通地 图种 服务
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《电气制图》国定标准中的几个具体问题
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作者 郭国松 《四川标准化与计量》 1989年第2期30-33,共4页
关键词 电气制 国家标准 图种 形符号
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AFLP Fingerprint and SCAR Marker of Watermelon Core Collection 被引量:31
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作者 车克鹏 许勇 +5 位作者 梁春阳 宫国义 翁曼丽 张海英 金德敏 王斌 《Acta Botanica Sinica》 CSCD 2003年第6期731-735,共5页
The identification of germplasm is an important step for effective utilization of the available germplasm. In previous studies, isoenzyme, RAPD and SSR techniques had been used to conduct the genetic identification of... The identification of germplasm is an important step for effective utilization of the available germplasm. In previous studies, isoenzyme, RAPD and SSR techniques had been used to conduct the genetic identification of watermelon ( Citrullus lanatus (Thunb.) Mansf.), but their effectiveness was limited due to the extremely narrow genetic background among watermelon genotypes. In this research, amplified fragment length polymorphism (AFLP), which was reported as a reliable technique with high efficiency in detecting polymorphism, was used to conduct genetic analysis and variety identification of thirty genotypes of watermelon core collection that represent a wide range of breeding and commercially available germplasm. As a result, a DNA fingerprint based on 15 bands amplified with four primer combinations was developed. In this fingerprint, each genotype has its unique fingerprint pattern and can be distinguished from each other. Furthermore, in or der to facilitate the utilization of AFLP marker in practice, one specific AFLP band of genotype 'PI296341' coming from fragment amplified by primer combination E-AT/M-CAT was successfully converted into a sequence characterized amplified region (SCAR) marker. 展开更多
关键词 AFLP variety identification FINGERPRINT SCAR WATERMELON
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Evolution of Main Characteristics of the Registered Cotton Cultivars in National Cotton Regional Trials in Yangtze River Valley 被引量:1
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作者 许乃银 李健 《Agricultural Science & Technology》 CAS 2014年第6期964-969,共6页
[Objective] The aim of this study was to characterize the national regis- tered varieties selected from cotton regional trials in Yangtze River Valley (YaRV) in recent years. [Method] Cotton cultivar classification ... [Objective] The aim of this study was to characterize the national regis- tered varieties selected from cotton regional trials in Yangtze River Valley (YaRV) in recent years. [Method] Cotton cultivar classification and comprehensive evaluation index were set up based on national cotton registration standard. GGE biplot method was adopted to analyze the correlation of major breeding target characters of 53 national registered cotton varieties in cotton regional trials in YaRV during 1981-2012. According to the shift of check cultivars in cotton regional trials in the past, the cotton regional trial practice since 1981 was divided into five periods. The dynamic of cultivar type's proportion and the evaluation index scores was analyzed across the five periods. [Result] There existed intricate interrelationship among cotton breeding target traits, which constrained it necessary to construct indices for com- prehensive evaluation of cotton varieties. The dynamic of cultivar types in the five periods indicated that type II varieties emerged since Simian 3 period and then its proportion decreased gradually; type Ⅲ varieties maintained a certain proportion in each period and kept on the rise overall; type Ⅳvarieties occupied the majority pro- portion of registered cultivars before 1993, but a minor proportion since Simian 3 period. On the other side, the change trend of the evaluation index demonstrated that the varieties registered before 2003 did not pass the qualified line at present. The peak scores appeared in the varieties registered during 2004-2008. The scores of the varieties registered after 2009 were only slightly over the qualified line. [Conclusion] More attention should be paid to the improvement and evaluation of micronaire, so as to guide the simultaneous development of high yielding and fiber quality in cotton breeding and registration procedure in YaRV. 展开更多
关键词 Cotton (Gossypium hirsutum L.) GGE biplot Variety type classification The Yangtze River Valley (YaRV)
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Selection of Example Varieties Used in the DUS Test Guideline of Tagetes L. 被引量:1
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作者 刘艳芳 张建华 +6 位作者 王烨 陈海荣 徐云 杨晓洪 张惠 管俊娇 王江民 《Agricultural Science & Technology》 CAS 2012年第10期2110-2111,2116,共3页
[Objective] Taking the characteristic of flower diameter of Tagetes L.as an example,this study aimed to select example varieties used in the DUS Test Guideline of Tagetes L.[Method] Two continuous years of measurement... [Objective] Taking the characteristic of flower diameter of Tagetes L.as an example,this study aimed to select example varieties used in the DUS Test Guideline of Tagetes L.[Method] Two continuous years of measurements of flower diameter of 25 varieties were collected and then analyzed by using the box plot to illustrate the uniformity and stability of flower diameter of each variety.[Result] According to the information of variability,distribution symmetry of measurements and outliers of flower diameter of varieties provided by box plots,variety 16,2 and 4 were selected as the example varieties for the three expression states with respective flower diameter of 3.0-4.4,6.0-7.4 and 9.0-10.4 cm.[Conclusion] The box plot is an efficient method for the general analysis of varieties,which provides information covering the actual and possible expression range,median and outliers of measurements of flower diameter of each variety.It also provides references for selecting example varieties for other quantitative characteristics and evaluating the quality of varieties. 展开更多
关键词 DUS Test Guideline of Tagetes L. Quantitative characteristic Example variety The box plot
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Responses of some landscape trees to the drought and high temperature events during 2006 and 2007 in Yamaguchi,Japan
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作者 王斐 山本晴彦 《Journal of Forestry Research》 SCIE CAS CSCD 2009年第A3期254-260,287,共8页
Extreme weather events were analyzed based on the meteorological data from the year of 1967 to 2007 for Yamaguchi, Japan. The responses from landscape trees were also investigated mainly by the analysis of image pixel... Extreme weather events were analyzed based on the meteorological data from the year of 1967 to 2007 for Yamaguchi, Japan. The responses from landscape trees were also investigated mainly by the analysis of image pixel and spectral reflectance. Results show that after the dry, hot and windy summer in 2007, many landscape trees in Yamaguchi City tended to respond the extreme weather events by reducing their leaf surface area and receiving less radiation energy. Premature leaf discoloration or defoliation appeared on some landscape tree species and leaf necrosis occurred on tip and margin of many Kousa dogwood (Cornus kousa) trees at unfavorable sites. Described by image pixel analysis method, the leaf necrotic area percentage (LNAP) of sampled dogwood trees averaged 41.6% and the sampled Sasanqua camellia (Camelia sasanqua) tree also showed fewer flowers in flower season of 2007 than that in 2006. By differential analysis of partial discolored crown, it presented a logistic differential equation of crown color for sweet gum (Liquidambar styraciflua) trees. It suggested that the persistent higher temperature and lower precipitation could be injurious to the sensitive landscape trees at poor sites, even in relative humid area like Yamaguchi. 展开更多
关键词 extreme meteorological event drought and high temperature landscape tree image pixel analysis response
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基于字典序乘积下广义和连通度指标的上下界
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作者 李志豪 朱焱 《华东理工大学学报(自然科学版)》 CAS CSCD 北大核心 2022年第3期405-410,共6页
对于图G,令E(G),d_(G)(v)分别表示G的边集和顶点v的度。对于边e=uv,定义广义和连通度指标χ_(α)(e)=(d_(G)(u)+d_(G)(v))^(α),其中α为任意实数。在对两个简单的连通图G和H做乘积之前,先对其中一个图H进行S,R,Q,T4种运算,运算后的图记... 对于图G,令E(G),d_(G)(v)分别表示G的边集和顶点v的度。对于边e=uv,定义广义和连通度指标χ_(α)(e)=(d_(G)(u)+d_(G)(v))^(α),其中α为任意实数。在对两个简单的连通图G和H做乘积之前,先对其中一个图H进行S,R,Q,T4种运算,运算后的图记为F(H)(其中F∈{S,R,Q,T}),再对图G和F(H)做字典序乘积,给出了基于字典序乘积下图的广义和连通度的指标上下界,并且这些界都是最好的。 展开更多
关键词 广义和连通度指标 字典序乘积 的4运算 F-和
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许叔微《仲景三十六种脉法图》考 被引量:4
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作者 张同君 《中华医史杂志》 CAS 1995年第3期171-174,共4页
本文对现存题为《脉法微旨》的一部明抄脉书进行了考证,认为该书实是早已亡佚的南宋许叔微《仲景三十六种脉法图》的一种传本。它是我国现存最早的一部脉图著作,比南宋施发的《察病指南》要早一百余年。
关键词 许叔微 《仲景三十六脉法 考证
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Application of Computer Vision Technique to Maize Variety Identification
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作者 孙钟雷 李宇 何伟 《Agricultural Science & Technology》 CAS 2013年第5期783-786,796,共5页
Variety identification is important for maize breeding, processing and trade. The computer vision technique has been widely applied to maize variety identification. In this paper, computer vision technique has been su... Variety identification is important for maize breeding, processing and trade. The computer vision technique has been widely applied to maize variety identification. In this paper, computer vision technique has been summarized from the following technical aspects including image acquisition, image processing, characteristic parameter extraction, pattern recognition and programming softwares. In addition, the existing problems during the application of this technique to maize variety identification have also been analyzed and its development tendency is forecasted. 展开更多
关键词 Maize variety identification Computer vision Image processing Feature extraction Pattern recognition
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Cultivar Selection and Test Site Evaluation of Cotton Regional Trials in Jiangsu Province Based on GGE Biplot 被引量:2
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作者 Jian LI Naiyin XU 《Agricultural Science & Technology》 CAS 2014年第8期1277-1280,1284,共5页
This study was to evaluate the high yielding and stability of candidate cultivars, depict the adaptive planting region, analyze trial location discrim-ination ability and representativeness, as wel as identify the ide... This study was to evaluate the high yielding and stability of candidate cultivars, depict the adaptive planting region, analyze trial location discrim-ination ability and representativeness, as wel as identify the ideal cultivar and trial location, with the aim to provide theory background for cultivar selection and rea-sonable scheme of test location in Jiangsu Province. [Method] The GGE biplot method was used to analyze the lint cotton yield of 12 experimental genotypes in the 6 test locations (three replicates in each) of the cotton regional trial in Jiangsu Province in 2013. [Result] The effects of genotype (G), environment (E), and geno-type by environment interaction (G&#215;E) on lint cotton yield were al highly significant (P〈0.01), which made it necessary to further explore the specific pattern of geno-type by environment interaction. Jinmian118 (G4) and SF3303 (G5) were the best ideal genotypes screened by the "ideal cultivar" and "ideal location" view of GGE biplot, and the ordination of test sites based on the ideal index were in the order of Dafeng (DF), Yanliang (YL), Liuhe (LH), Dongtai (DT), Yancheng (YC), and Nantong (NT), among which NT was relatively weak in representing of the whole target cot-ton planting region in Jiangsu Province. The "similarity among locations" view of GGE biplot clustered al trial locations into one group, showing that the test sites in the cotton planting region in Jiangsu Province were in the same mega-environment. The "which-won-where" view of GGE biplot indicated that cotton cultivar Jinmian118 (G4) was the most appropriate cultivar in the homogeneous cotton planting region in Jiangsu Province. [Conclusion] Among the candidate cultivars, Jinmian118 and SF3303 were identified as the most ideal cultivars in this set of conventional cotton regional trial in Jiangsu Province; the test site of Dafeng ranked the first out of al locations in terms of discrimination and representativeness, and al test locations were clustered into the same mega-environmet, which indicated the high efficiency of cultivar selection in the cotton regional trial in Jiangsu Province. 展开更多
关键词 Cotton (Gossypium hirsutum L.) GGE biplot Discrimination ability REPRESENTATIVENESS Crop regional trial
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The Organization of Multimedia Information in Electronic Map
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作者 CAI Zhongliang WU Guofeng WENG Min DU Qingyun 《Geo-Spatial Information Science》 2002年第2期56-61,共6页
On the basis of an electronic map_based hypermedia data model (EMBHDM),this paper makes a study on the technologies of nonlinear storage,organization,management and browsing of information as well as organization of d... On the basis of an electronic map_based hypermedia data model (EMBHDM),this paper makes a study on the technologies of nonlinear storage,organization,management and browsing of information as well as organization of data on the basis of the relationship between multimedia information of electronic maps. This paper first analyzes some features of electronic maps and hypermedia technology,and then illustrates the creation of EMBHDM with some examples.The tests show that this model can efficiently organize and express multimedia data. 展开更多
关键词 MULTIMEDIA electronic map HYPERMEDIA data model
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Adaptability Analysis of Hybrid Castor Based on AMMI Model
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作者 张宝贤 王光明 +2 位作者 谭德云 刘红光 孙丽娟 《Agricultural Science & Technology》 CAS 2011年第10期1481-1483,1489,共4页
[Objective] The paper analyzed production adaptability and stability of 4 hybrids of castor,so as to explore the application method of AMMI model in variety evaluation.[Method] AMMI model and biplot were used to carry... [Objective] The paper analyzed production adaptability and stability of 4 hybrids of castor,so as to explore the application method of AMMI model in variety evaluation.[Method] AMMI model and biplot were used to carry out stability analysis on 4 castor combinations in multi-point test during 2008 and 2009,and further evaluate the stability and adaptability of various tested combinations.[Result] AMMI model analysis showed that the singular values IPCA1 and IPCA2 in principal component axis of interaction totally explained 92.24% of the interaction variance.AMMI model not only maximizes the reflection on variation of interaction,but also can accurately analyze the adaptability and yield stability of varieties.[Conclusion] AMMI model integrates variance analysis and principal component analysis together,which improves accuracy compared with the traditional method.Even the adaptability of female line without fertility could be indirectly evaluated through the identification on the genotype and environment interaction effects in F1 generation. 展开更多
关键词 CASTOR AMMI model BIPLOT Variety stability HYBRID
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Molecular Identification and Cultivar Fingerprints of Prunus persica (L.) Batsch Germplasms 被引量:3
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作者 SUN Shu-xia LI Jing JIANG Guo-liang CHEN Dong XIE Hong-jiang TU Mei-yan 《Agricultural Science & Technology》 CAS 2010年第7期1-5,8,共6页
[Objective] The aim was to study the molecular identification and cultivar fingerprints of Prunus persica (L.) Batsch germplasms.[Method] Sixty peach genotypes,representing China common local cultivars and European sa... [Objective] The aim was to study the molecular identification and cultivar fingerprints of Prunus persica (L.) Batsch germplasms.[Method] Sixty peach genotypes,representing China common local cultivars and European samples were screened by microsatellites (simple sequence repeats,SSRs) and Inter-Simple Sequence Repeat (ISSR) markers.[Result] 26 reproducible bands were amplified by Nine SSR primers,and 24 of which were polymorphic; 236 bands were amplified by 30 ISSR primers,and 113 of which were polymorphic.31 genotypes were discriminated with 1-3 distinct polymorphic bands generated from the primers ISSR and SSR.Seven cultivar-specific ISSR fragments and two SSR unique alleles obtained from this study were available to be converted into Sequence Characterized Amplified Region (SCAR) markers.The genetic similarity coefficient (GS) estimated from these molecular data averaged were 0.939 (ranged from 0.856 to 0.983) for ISSR and 0.646 (ranged from 0.240 to 1.000) for SSR,respectively.The combined grouping association indicated that most local Chinese peach cultivars and exotic accessions were clustered together.This could be related to the mode of introduction and maintenance of the peach cultivars involving limited foundation germplasm,exchange of cultivars between plantations,and periodic development of new recombinant cultivars following sexual reproduction.[Conclusion] The results obtained in this work would help to improve the conservation,molecular identification and management of peach germplasm in breeding. 展开更多
关键词 Genetic variability ISSR Molecular identification Prunus persica (L.) Batsch SSR
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Flotation bubble image segmentation based on seed region boundary growing 被引量:4
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作者 Zhang Guoying Zhu Hong Xu Ning 《Mining Science and Technology》 EI CAS 2011年第2期239-242,共4页
Segmenting blurred and conglutinated bubbles in a flotation image is done using a new segmentation method based on Seed Region and Boundary Growing(SRBG).Bright pixels located on bubble tops were extracted as the se... Segmenting blurred and conglutinated bubbles in a flotation image is done using a new segmentation method based on Seed Region and Boundary Growing(SRBG).Bright pixels located on bubble tops were extracted as the seed regions.Seed boundaries are divided into four curves:left-top,right-top,right-bottom, and left-bottom.Bubbles are segmented from the seed boundary by moving these curves to the bubble boundaries along the corresponding directions.The SRBG method can remove noisy areas and it avoids over- and under-segmentation problems.Each bubble is segmented separately rather than segmenting the entire flotation image.The segmentation results from the SRBG method are more accurate than those from the Watershed algorithm. 展开更多
关键词 Bubble image SEGMENTATION Seed area Region growing
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馆藏孙承泽的四部书稿本述略 被引量:1
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作者 张青 《图书情报论坛》 2003年第3期63-64,10,共3页
一、孙承泽其人其事承泽字耳北、或作耳伯,又字思仁,号北海,又号退谷,晚自称退翁。其先世居山东青州府益都县,明永乐中迁实京畿,故称北平。为顺天大兴人,因世隶上林苑籍,故称北平。孙氏生于明神宗万历二十年(1592),卒于清圣祖康熙十五年... 一、孙承泽其人其事承泽字耳北、或作耳伯,又字思仁,号北海,又号退谷,晚自称退翁。其先世居山东青州府益都县,明永乐中迁实京畿,故称北平。为顺天大兴人,因世隶上林苑籍,故称北平。孙氏生于明神宗万历二十年(1592),卒于清圣祖康熙十五年(1676)年,享年八十四岁。承泽于明崇祯庚午(三年,1630)得中举人,辛未(四年,163I)成进士,尝官陈留知县,调祥符县,以卓异授刑科给事中,历升户。 展开更多
关键词 馆藏文献 孙承泽 古籍研究 《五经翼》 《益智录》 《孙退谷畿辅人物志略》 《研山斋珍赏历代法书集览》 《研山斋珍赏历代名贤绘集览》 《历代绘挈要四
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New auto color correction algorithm for microscopic imaging system
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作者 蒋刚毅 Liu Xiangjun +2 位作者 Yu Mei Peng Zongju Shao Feng 《High Technology Letters》 EI CAS 2015年第3期282-288,共7页
trast (HC) method is proposed to define saliency value of each pixel, then auto Grabcut segmenta- tion method is used to segment the salient region so as to obtain a region of interest (ROI). After that, normalize... trast (HC) method is proposed to define saliency value of each pixel, then auto Grabcut segmenta- tion method is used to segment the salient region so as to obtain a region of interest (ROI). After that, normalized histograms and cumulative histograms for ROI and region of background (ROB) are calculated. The mapping functions of the corresponding regions are derived from reference image to distorted image through the nearest cumulative histogram matching method, so that color correction can be finally achieved. Experimental results show that benefitting from the separate treatment to ROI and ROB, the proposed color correction method could avoid error propagation between the two different regions, which achieves good color correction result in comparison with other correction methods. 展开更多
关键词 stereo microscope color correction region of interest(ROI) Grabcut segmentation
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