wavelet bandwidth 中文意思是什麼
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It has such feathers as multi - resolution, constant relative bandwidth, and the ability to indicate the local features of signal in time and space. after wavelet transform by using proper wavelet basis functions, the epileptic waves can be separated at different scale, then we can detect the epileptic waves by using the wavelet transform result at the proper threshold value
本文選取適當的小波函數，將信號進行連續小波變換，把腦電信號中的癲癇特徵波在不同的尺度下分離出來，然後選取特定尺度下的變換結果，通過閾值判定方法對棘波進行檢測。 -
In term of bandwidth fluctuation of internet, proposes two types of scalable video coding scheme adapted to transmission of internet, that is, a fine - granularity spatially scalable video coding and a progressive fine - granularity scalable video coding. meanwhile, proposes a wavelet transform ' s algorithm using for lower rate coding
同時針對internet上傳輸帶寬波動性，提出了兩種可用於internet傳輸的可伸縮視頻編碼方案- - fgss （精細空間可伸縮視頻編碼）和pfgs （漸進精細可伸縮視頻編碼） ，提出了用於極低碼率的小波變換編碼演算法。 -
When the digital streaming video is transmitted on internet, it will be affected by the network, such as bandwidth, so the paper also deals with streaming video watermarking and its exclusive requirement. at the last chapter, an object - based watermarking algorithm has been presented. the watermarking algorithm for mpeg - 4 compression is devoted to address the influence from the rate scalability, based on static texture object in mpeg - 4 and watermarking in wavelet domain
在此基礎上針對視頻與圖像的異同點，分析比較了靜態圖像水印和視頻水印特點的異同，並且結合在internet上傳輸視頻時，網路自身的特性（比如帶寬資源等）對視頻流產生的影響，以及這些影響對視頻流水印技術的特殊要求，結合基於對象的視頻編碼標準mpeg - 4的特性，提出了在視頻對象中利用基於小波變換的水印方案。 -
The analysis on the method shows that an advantage of wavelet - based video compression coding is that it offers more graceful image degradation at high compression ratios, and it also eliminates the block artifacts seen in dc compression. and it can solve the contradiction between limited bandwidth and infinitude requirements of increasing customers in present communication system
該系統充分利用人眼的視覺特性來減少幀內和幀間的冗餘信息，能夠消除傳統圖像編碼的方塊效應、蚊子效應等現象實現高壓縮比，高質量的圖像編碼，可較好地解決現行通信系統中有限帶寬與日趨增加的無限用戶需求之間的矛盾。
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