The double-density DWT is an improvement upon the critically sampled DWT with important additional properties: (1) It employs one scaling function and two distinct wavelets, which are designed to be offset from one another by one half, (2) The double-density DWT is overcomplete by a factor of two, and (3) It is nearly shift-invariant. In two dimensions, this transform outperforms the standard DWT in terms of denoising however, there is room for improvement because not all of the wavelets are directional. That is, although the double-density DWT utilizes more wavelets, some lack a dominant spatial orientation, which prevents them from being able to isolate those directions.
標簽： double-density improvement additional critically
上傳時間： 2017-04-03
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Ns2 Tutorial,an important tool in communication research.
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上傳時間： 2017-04-06
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Document in german language, about the most important forms of modulation.
標簽： modulation important Document language
上傳時間： 2017-04-08
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this important book about PIC microcontroller
標簽： microcontroller important about this
上傳時間： 2013-12-25
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Maxim microcontroller seminar ,important presentation about powercontrol and other stuff
標簽： microcontroller presentation powercontrol important
上傳時間： 2014-01-06
上傳用戶：luopoguixiong
it is very important
上傳時間： 2017-04-18
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it is very important
上傳時間： 2017-04-18
上傳用戶：chenlong
it is very important
上傳時間： 2014-08-25
上傳用戶：epson850
it is very important
上傳時間： 2013-12-12
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some of the important matlab codes for calculating PSD of a signal for students
標簽： calculating important for students
上傳時間： 2017-04-19
上傳用戶：wuyuying
