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Search Results: 1 - 10 of 78432 matches for " 惠国保 "
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像素聚类改进二进制描述子鲁棒性
,李东波
中国图象图形学报 , 2014, DOI: 10.11834/jig.20140411
Abstract: 目的通过挖掘图像局部区域特征信息,提出了一种鲁棒性更高的二进制描述子。针对BRIEF(binaryrobustindependentelementaryfeatures)关于旋转和视角变化鲁棒性差的问题,通过图像补丁分层处理、增加关键点图像补丁个数来捕获更多的局部特征信息,对BRIEF描述子改进。方法首先,根据灰度序列对补丁内所有像素点分类,像素的一个聚类形成了一个亚补丁,然后在每个亚补丁上进行类似BRIEF的随机测试。其次,由于原图像补丁大小、尺度大小影响补丁的像素点成分,从而影响像素聚类的效果,所以在原图像关键点周围分割出多个不同大小的图像补丁,或是将原图像补丁根据尺度金字塔确定几个尺度大小不同的补丁,然后再对图像补丁进行分层、测试。所构建的描述子不仅包含了补丁像素的灰度比较信息,而且包含了灰度排序信息和像素群聚信息,提高了描述子的鲁棒性。结果通过性能对比实验,发现所提的描述子的性能提高了,而且好于对比的浮点描述子。结论挖掘图像补丁的特征信息能提高二进制描述子的鲁棒性。
自适应耦合方向扩散和冲击滤波的图像放大
,卫华
中国图象图形学报 , 2011, DOI: 10.11834/jig.20110424
Abstract: 提出一种新的基于偏微分方程(PDE)的图像放大算法。算法模型由方向扩散、保真项和冲击滤波构成。通过设置与边缘信息有关的保真项系数,调节图像被模糊的程度,保留图像特征;综合调节扩散方程和冲击滤波的权重,实现两种PDE的自适应耦合。由于运用连续函数,结合图像内容调节两种PDE的权重,避免了在放大时出现人工痕迹。实验结果表明,此算法在客观指标和主观效果上均优于传统双线性插值和其他同类方法,是一种有效的图像放大算法。
苹果新品种自交不亲和基因型的分子生物学鉴定
张雪梅,,,齐国辉
园艺学报 , 2007,
Abstract: 根据保守氨基酸序列ftqqyq和anti-1/miwpnv设计苹果自交不亲和基因引物p1:5′2tt2tacgcagcaatatcag23′;p2:5′2acgttcggccaaata/catt23′,利用pcr-rflp分析方法,以河北省新引进的苹果品种美国8号、昂林、松本锦、华冠、南方脆幼叶为试验材料,鉴定其自交不亲和基因型分别为s9s27、s1s9、s9s9、s2s9、s2s9。
基于优化采样模式的紧凑而快速的二进制描述子
, 李东波, 童一飞
自动化学报 , 2014, DOI: 10.3724/SP.J.1004.2014.00255
Abstract: ?进一步挖掘图像补丁特征信息,提出了一种鲁棒性更高的二进制描述子.针对传统的二进制描述子对旋转和视角变化鲁棒性差的问题,本文通过优化采样模式和分解图像补丁对其改进.首先,通过对最新提出的采样模式特点的分析、测试,发现采样点密度和平滑重叠度对产生的描述子独特性有重要影响;据此,调整这两个影响因子,设计出一种优化的采样模式.其次,利用像素点灰度值排序方法分解图像补丁,产生多个对应不同灰度段的亚补丁.最后,将优化的采样模式映射到亚补丁上,随机提取样本点进行灰度值比较测试.所得到的二进制描述子不仅包含了补丁像素的灰度比较信息,而且包含了灰度排序信息.通过对比实验看到本文的二进制描述子对特征识别匹配效果最好.本文的特征描述方法可应用于实时性要求高、内存紧凑的高质量目标识别.
Image magnification by adaptive coupling of oriented diffusion and shock filter
自适应耦合方向扩散和冲击滤波的图像放大

Wei Baoguo,Hui Weihua,
,卫华

中国图象图形学报 , 2011,
Abstract: Based on partial differential equations (PDE), we propose a novel image magnification approach which consists of oriented diffusion, fidelity term and shock filter. In a zoomed image, the blurring can be adjusted and the features be preserved by setting the coefficient of the fidelity term related to edges. The weighting of oriented diffusion and shock filter can be balanced through continuous function based on image content. Thus we adaptively combine the two kinds of PDE with minimum artifacts. Experiments demonstrate that the proposed adaptive coupling approach can achieve better result than traditional interpolation methods and other similar methods.
太行山片麻岩区新垦苹果园土壤营养与果实品质的关系研究
,齐国辉,郭素平,,张林平
中国生态农业学报 , 2002,
Abstract: 对太行山片麻岩区新垦苹果园土壤营养因素与红富士果实品质关系的研究结果发现,该类型土壤中N、P、K含量转丰富,速效氯、速效砖含量中等偏下,而Ca、Zn含量不足。在多种营养因素相互作用下对果实内在品质影响最大的因素是Fe和速效钾,其次是zn和全P;生产优质苹果的表层土壤速效氯含量为30~127mg/kg,速效磷含量为l8~l07mg/kg,速效钾含量为50~164mg/kg,其适宜比例为1:0.8:1.4。
苹果新品种‘中秋王’生物学特性研究
赵丹,潘亚菲,,,齐国辉,彭阳
北方园艺 , 2015, DOI: 10.11937/bfyy.201508008
Abstract: 为明确优质中熟苹果新品种‘中秋王’的生物学特性,于2014年在河北省内丘县侯家庄乡岗底村调查研究了该品种的生长、结果情况。结果表明栽植第4年的‘中秋王’平均树高248.3cm,平均干周15.9cm。萌芽率47.98%。全树短梢数量最多,占新梢总量的77.34%;中梢和长梢分别占总量的7.57%、15.09%。长、中、短新梢上叶片的平均叶面积分别为47.40、32.38、23.75cm2;叶绿素a含量分别为4.71、2.81、2.97mg/cm2,叶绿素b含量分别为1.49、0.83、1.43mg/cm2,总叶绿素含量分别为6.20、3.65、4.40mg/cm2。‘中秋王’开花物候期从3月下旬开始,至4月中旬结束。花冠直径4.9cm,每花序中平均花朵数5.09,每朵花平均花药数18.90,每枚花药中平均花粉粒数15152粒。花序坐果率64.22%,花朵坐果率25.31%。果实于8月下旬到9月上旬成熟。果实平均纵横径分别为8.96cm和9.09cm,平均单果重为196.4g。果实中可溶性固形物、可溶性总糖、可滴定酸、淀粉含量分别为14.02%~14.80%、13.26%~13.56%、0.21%~0.25%、0.16%~0.20%。果实硬度为7.20~7.84kg/cm2。
粒径对飞灰比电阻及介电特性的影响
,刘海玉,金燕,杨艳霞,
热力发电 , 2015,
Abstract: 飞灰的比电阻和介电损耗对提高电厂的除尘效率和飞灰的回收利用影响较大。通过采集国内2个电厂的飞灰样品,将其筛分成不同粒径范围的灰样,利用粉末电阻率测定仪和矢量网络分析仪(vna)研究粒径对飞灰比电阻及其介电特性的影响。结果表明,去碳前飞灰的比电阻和介电损耗均随粒径变化无明显变化规律;去碳后飞灰的比电阻随着粒径的减小呈逐渐减小趋势,而其介电损耗却随着粒径的减小逐渐增大。
电针治疗对缺血性脑卒中患者功能恢复及侧支循环建立的影响
范崇桂,,闪海霞,
- , 2015,
Abstract:
不同砧木对‘绿岭’核桃生长和果实品质的影响
Effects of Different Rootstocks on the Growth and Kernel Quality of Juglans regia cv.Lyuling

,梁曼曼,赵爽,,李寒,张雪梅,齐国辉
- , 2017, DOI: 10.3969/j.issn.1001-7461.2017.06.17
Abstract: 为了解不同砧木对‘绿岭’核桃生长和果实品质的影响,以核桃砧木品种中宁强、中宁异、加州黑和核桃实生苗作砧木嫁接‘绿岭’核桃的2年生幼树为试材,调查测定了不同砧木‘绿岭’核桃生长及果实品质。结果表明,开花结果物候期方面,中宁异和加州黑砧木的‘绿岭’核桃的雌花芽膨大期比核桃砧木早4 d,比中宁强砧木早1 d;中宁强和中宁异砧木‘绿岭’核桃的雌花芽开绽期比加州黑和核桃砧木早2 d;中宁强、中宁异、加州黑3种砧木‘绿岭’核桃雌花初花期和盛花期均比核桃砧木早3 d,末花期早4 d。生长方面,中宁异砧木‘绿岭’核桃的树高、地径、冠幅、一年生枝长度、坐果率分别为176.5、3.93、71.5 cm与80.5 cm、71.88%,均极显著大于核桃砧木;中宁强砧木‘绿岭’核桃的萌芽率为48.25%,极显著大于加州黑和核桃砧木,显著大于中宁异;中宁强、中宁异、加州黑3种砧木‘绿岭’核桃的坐果率分别为68.61%、77.18%、73.83%,均极显著大于核桃。结果及果实品质方面,中宁异砧木‘绿岭’核桃的单株产量为241.0 g?株-1,极显著大于核桃;中宁强、中宁异、加州黑3种砧木‘绿岭’核桃的单果重、纵径、横径、侧径均极显著大于核桃砧木;中宁强、中宁异、加州黑砧木‘绿岭’核桃的核仁脂肪含量分别为67.63%、67.14%、68.02%,均极显著大于核桃;4种砧木‘绿岭’核桃的可溶性蛋白质含量和总蛋白质含量均无显著差异。运用隶属函数法对不同砧木‘绿岭’核桃的生长及果实品质进行综合评价,综合评价值由大到小依次为:中宁异(0.554)>加州黑(0.537)>中宁强(0.448)>核桃(0.323),因此,在生长及果实品质方面,中宁异是适合‘绿岭’核桃的适宜砧木。
To determine the effects of different rootstocks on the growth and fruit quality of Juglans regia cv.Lyuling,2-year-old seedlings of Lyuling which were grafted onto J.regia cv.Zhongningqiang,J.regia cv.Zhongningyi,J.hindsii and J.regia rootstocks to study the effects of the four rootstocks on the growth and fruit quality.The results showed that the flower bud swelling period of Lyuling grafted onto J.regia cv.Zhongningyi and J.hindsii was 4 days earlier than that of J.regia,which was also 1 day earlier than that of J.regia cv.Zhongningqiang.The flower bud splitting period of Lyuling grafted onto J.regia cv.Zhongningqiang and J.regia cv.Zhongningyi was 2 days earlier than that of J.hindsii.The initial flowering stage and florescence stage of Lyuling grafted onto J.regia cv.Zhongningqiang,J.regia cv.Zhongningyi and J.hindsii were 3 days earlier than J.regia,whose last flowering stage was 4 days earlier than that of J.regia.For the growth characteristics,5 features,i.e.,seedling height,ground diameter,crown width,annual branches length,and fruit setting rate of Lyuling grafted onto J.regia cv.Zhongningyi were significantly higher than that of J.regia,the values of the five features were 176.47 cm,3.93 cm,71.5 cm,80.54 cm and 71.88%,respectively.The germination percentage of Lyuling grafted onto J.regia cv.Zhongningqiang was 48.25%,extremely and significantly higher than that of J.hindsii,which was significantly greater than that of J.regia cv.Zhongningyi.The fruit setting rate of Lyuling grafted onto J.regia cv.Zhongningqiang,J.regia cv.Zhongningyi,J.hindsii were 68.61%,77.18%,and 73.83%,respectively,which were extremely and significantly higher than that of J.regia,.For the external quality of fruit,the yield per plant of Lyuling grafted onto J.regia cv.Zhongningyi was 241.00 g?plant-1 rain,which was extremely and
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