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1.
从智能控制与特征建模方法入手提出一种手写体汉字识别系统结构模型,仿人思维模式将复杂任务系统分解为决策、执行两层.综合目前常用的手写体汉字识别方法特点,针对不同特征汉字采用合适的识别方法,并通过广义误差对识别结果进行反馈,达到校正的目的,实验证明该结构方法有效.  相似文献   

2.
手写体汉字机器识别技术的研究不仅具有重要的理论研究价值, 而且具有广阔的应用前景。本文介绍了手写体汉字识别技术的原理、研究历史及技术困难, 综合分析了当前国内外主要识别方法及其特点, 展望了该技术今后的发展方向  相似文献   

3.
脱机手写体汉字识别是一个多类分类问题,且某些类别之间存在一定的关系,在识别其中某一类汉字时,并不需要区分所有汉字类别,为此提出了一种基于动态剪枝二叉树SVM的多分类改进算法.每次识别时都去掉没有价值的支持向量,根据字型结构特征重新构造二叉树,可以减少支持向量机数量,提高识别速度.通过对脱机手写体汉字识别仿真,比较不同多类分类算法的性能,证明该方法能够在保证识别准确率的情况下提高了汉字分类识别的速度.  相似文献   

4.
提出了一种新的基于核判别分析的手写汉字识别方法。核判别是对线性判别式分析的非线性判别分布的扩展。阐述了核判别分析法的基本原理,建立了核判别分析手写体识别模型,研究分析了核判别分析手写体识别模型的缺陷并提出了优化策略。在此基础上,采用C#与核判别分析相结合的算法,更好地展示了核判别算法的算法优势,采用高级语言提高了网络的学习训练速度和识别效果。  相似文献   

5.
本文提出了一种基于模糊方向线索特征 (fuzzydirectionallineelementfeature,FDLEF)与人工神经网络 (artificialneuralnetworks,ANN)相结合的手写体汉字识别方法 (FDLEF -ANN) ,解决了单一FDLEF方法对相似字识别率低的问题 .这种方法分两级识别 ,先由FDLEF识别模块进行识别 ,将识别结果送至选择器 ,若识别结果不属于预定义的相似字集合簇 ,则该结果即为最终识别结果 ,否则 ,将其送至人工神经网络识别模块进行相似字的识别 .本方法既保留了原FDLEF方法的优点又提高了对相似字的识别率 ,FDLEF -ANN系统对相似字的识别率由 78 0 9%提高到 82 97% .  相似文献   

6.
手写体汉字识别是有着广泛应用的研究领域,非限定手写体汉字串由于大量存在笔画嵌入、粘连等现象,将单字从串中分离开就成为字识别的前提。本文以投影法为基础,有效利用字间距和汉字本身固有的结构信息对手写体汉字进行分割。本文提到的方法在银行票据,邮件等签字认定等领域有着广泛的应用。  相似文献   

7.
手写体汉字识别笔画提取方法的研究   总被引:2,自引:0,他引:2  
由于手写体汉字的复杂性,目前手写体汉字识别正确率不高。笔者提出在拐点提取方法上以像素跟踪法辅助最大距离法,在笔段合并中只考虑与交叉点相连的笔段,并提出具体算法,该方法可以有效克服拐点遗漏,笔段合并错误的弊端,使拐点的遗漏率大大降低,笔段合并正确率有较大改进,汉字识别正确率达到90%。  相似文献   

8.
脱机手写体识别是字符识别中的难点之一,日文中的平假名类似于中文的手写体草书.为解决该问题,首先,针对日文平假名字符的特点提出了一种基于网格的外围特征提取方法,其次,考虑到了不同特征的分类能力的差异性,提出了一种基于支持向量机的多特征融合的识别方法,提高了识别率.最后,针对日文车牌中的6 735个平假名样本和4 145个数样本字进行了识别实验.实验结果表明,该方法的识别率可达98%左右,优于距离分类器及神经元网络的方法,具有实际应用的价值.  相似文献   

9.
人工神经网络和模糊逻辑作为一种创建计算智能系统的有效方法,在处理不确定问题时,显示了独特的优势,将神经-模糊技术引入手写体相似汉字的识别领域,并用MATLAB软件进行计算机模拟.实验结果表明,采用神经.模糊技术和统计模型方法相比对相似汉字的平均识别率提高了约4个百分点。  相似文献   

10.
介绍了一种基于多重隐马尔克夫模型(Multiple HMM——MHMM)的手写体汉字识别新方法。该方法首先提取基于区域投影变换形成的边界链码特征,对每个汉字建立4个HMM,通过等比重综合方法将4个分类器的计算结果进行综合,从而得到识别结果。实验结果证明该方法较传统的HMM具有更高的抗干扰能力和更高的识别率。  相似文献   

11.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

12.
一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/  相似文献   

13.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?  相似文献   

14.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.  相似文献   

15.
王菲 《华章》2007,(12):273-273
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.  相似文献   

16.
裴水妹 《华章》2007,(11):196
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.  相似文献   

17.
18.
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…  相似文献   

19.
《海外英语》2007,(4):8-9
城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!  相似文献   

20.
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.  相似文献   

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