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On the same day that Apple jolted the tech world with the announcementit will manufacture some Mac computers in the U.S., another piece of tech news slid by largely unnoticed: Two of Apple's Taiwanese suppliers were also planning to bring jobs home.jolt：使颠簸，使震惊，使摇动 Apple's announcement has m 阅读全文
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The world has been united in grief over the over America's latest mass shooting, but for those of us who are parents, the incident presents a special kind of terror.That's because being a parent means living with your heart outside of your body. And if your heart is suddenly ripped away, it& 阅读全文
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Have you heard the doomsday theory about how a rogue planet is going to crash into Earth on Friday and kill us all?doomsday：世界末日 rogue：游手好闲，流浪，欺诈 Amateur astronomer Bill Hudson says that it simply isn't true, and he can prove it─scientifically.The prediction is supposedly based on the end of a . 阅读全文
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Twin school attacks in the U.S and China on Friday are shining an unflattering light on hot-button issues in both countries, with Chinese media and microbloggers berating local officials in Henan province for failing to be as open and caring as their counterparts in Newtown, Conn.unflattering：准确无误的； 阅读全文
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As students, businesses and educators in the U.S. ponder whether the master's degree is the new bachelor's degree, China's well-off tiger parents appear to have already decided.ponder：思考 well off：小康Three-quarters of middle-class Chinese parents expect their child to earn a postgraduate d 阅读全文
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Think China's well-to-do shoppers spend precious hours deliberating how to drop that extra $20,000? Think again.China's upscale shoppers are increasingly impulsive, according to a new report from consulting firm McKinsey & Co, which surveyed 1,000 Chinese luxury consumers in 14 cities du 阅读全文
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So sorry for having turned aside my English learning for a month,what a messy period of time. Too many things to do and too many things in vain,restless and fidgety,I want to escape from this kind of life.How to be happy? How to arrange my time properly? What things are worth doing and what are not? 阅读全文
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Ever wondered why Chinese kids are so good at math? DNA? Are they born smart or is it just practice? We moved to China in 2009 and were warned about how tough the schooling would be. Chinese parents, anxious to help, dropped a few hints. At farewell dinners the conversation would eventually turn to 阅读全文
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很多同学需要源文档，所以添加了下载链接，方便大家共同学习进步~本文下载链接：http://files.cnblogs.com/yingying0907/Gabor%E7%AC%94%E8%AE%B0.zipGabor变换是D.Gabor1946年提出的。为了由信号的Fourier变换提取局部信息，引入了时间局部化的窗函数，得到了窗口Fourier变换。由于窗口Fourier变换只依赖于部分时间的信号，所以，现在窗口Fourier变换又称为短时Fourier变换，这个变换又称为Gabor变换。1)Gabor优点Gabor小波与人类视觉系统中简单细胞的视觉刺激响应非常相似。它在提取目标的局部空间和 阅读全文
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1.傅里叶变换1)简介数字图像处理的方法主要分成两大部分：空域分析法和频域分析法。空域分析法就是对图像矩阵进行处理；频域分析法是通过图像变换将图像从空域变换到频域，从另外一个角度来分析图像的特征并进行处理。频域分析法在图像增强、图像复原、图像编码压缩及特征编码压缩方面有着广泛应用。如果一个信号f(t)在上满足：① f(t)在任一有限区间上满足狄氏条件；② f(t)在上绝对可积即就可以通过傅里叶变换把时域信号f(t)转化到频域进行处理：然后再通过傅里叶反变换把频域信号转化到时域：傅里叶变换是线性系统分析的有力工具，提供了一种把时域信号转换到频域进行分析的途径，时域和频域之间是一对一的映射关系。图 阅读全文