Based on mentioned-above wavelet analysis theories, two-dimension biorthogonal wavelet and the implementation of wavelet transform on discrete images have been discussed.

在以上小波分析理论的基础上进一步讨论了二维正交小波变换和离散图像的小波变换实现。

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Secondly, a new method of infrared weak and small targets detection based on wavelet and adaptive threshold is proposed with an effective improvement detection of performance.

其次，利用小波多分辨分析特性，提出了基于小波分析的自适应门限检测方法，有效地提高了红外弱小目标检测性能。

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The paper introduces the definition of wavelet transform and its properties. Especially the philosophy for zero-crossing wavelet and how it can be used in seismic prospecting are presented.

介绍了小波变换的定义及小波变换的性质，特别介绍了零通小波的理论及其如何在地震勘探资料处理中的应用。

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The RNLI's Exmouth inshore lifeboat was launched, but the crew of the Wavelet managed to turn the yacht round and pull the unconscious man from the sea, a Maritime and Coastguard Agency spokesman said.

BBC: Yacht boom knocks Devon sailor, 72, overboard