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- A new method of CCD image processing,two dimensions Mexican Hat wavelet transform,is put forward for the purpose of improving the quality of the CCD images of uranian satellites. 针对天王星卫星位置观测图像中存在的一些问题 ,提出了一种新的图像处理方法 ,即二维墨西哥帽小波变换方法。
- Continuous wavelet transform (CWT) analysis at NOAA/AVHRR thermal data (Channels 4 when present) was made by the approach of the isotropic 2D Mexican hat wavelet. 摘要利用二维连续小波变换（墨西哥帽小波），结合影像下的地物类型分布，对多时相的NOAA/AVHRR影像4波段数据进行信号场分析。
- Wavelet Transform (WT) technology of multiresolution feature extraction is studied to identify and quantitatively analyze remote sensing FTIR spectra by Mexican hat function. The signal is performed by continuous wavelet transform (CWT). 利用小波的信号多尺度边缘特征提取，采用墨西哥帽函数小波对所获取的遥感傅里叶变换红外光谱信号进行连续小波变换，从而达到识别和定量解析遥感光谱的目的。
- The over-complete dictionary, which is built on anisotropic refinement and rotation of 2D nonseparable Mexican hat wavelet, can efficiently capture edge characteristics present in natural images. 利用二维不可分离、具有各向异性尺度的墨西哥草帽小波作为生成函数，这种函数构建的冗余字典能够有效捕获图像边缘轮廓特征。
- He removed his hat as a sign of reverence. 他脱下帽子表示敬意。
- A New De-Noising Technique for Spectra Based on Mexican Hat Wavelet 光谱信号的小波去噪新技术
- He persuaded her to sign the document by guile. 他用欺骗手段说服她在文件上签字。
- plant similar to the Mexican hat coneflower; from British Columbia to New Mexico. 生长在哥伦比亚至新墨西哥地区。
- Please go down the ladder and chuck up my hat. 请下梯子把我的帽子扔上来。
- Do you think this hat and coat go together? 你认为这顶帽子和衣服协调吗？
- The antique table went to the lady in the pink hat. 这张古董桌子卖给那位戴粉红色帽子的女士了。
- His hat was whirled away by the wind. 他的几十被风吹得旋转飞走。
- She cocked her hat at a jaunty angle. 她把帽子歪戴着,一副俏皮的样子。
- There is no sign of a let-up in the hijack crisis. 绑架危机毫无缓和迹象。
- I was forced to sign the agreement against my will. 我被迫违心地在协议上签了字。
- He jammed his hat on angrily arid went out. 他怒气冲冲地使劲戴上帽子，走了出去。
- John's new hat is a bobby dazzler. 约翰的新几十非常引人注意。
- The wide brim of his hat shadowed his face. 他的大帽檐的影子映在他的脸上。
- Soldiers sign out when they leave the barracks. 士兵离开营房得登记签字。
- She made a sign for me to approach her. 她对我发出靠近她的暗号。
