閾值帶濾波 的英文怎麼說
中文拼音 [yùzhídàilǜbō]
閾值帶濾波
英文
threshold zonal filtering-
And a design example is given to prove the efficiency of this method. the fifth part is a research of application of filter banks in the image denoising. a new denoising method with optimized threshold is introduced, whose efficiency has been certified by some comparing examples
第五部分，我們研究了子帶濾波器組在圖像消噪中的應用，並且在完全重構格型濾波器組的基礎上，提出了一種利用優化閾值進行圖像消噪的新方法，對比實驗的結果表明該方法可以得到良好的消噪效果。The method includes split originality image region, filter, separately coding the lowest frequency sub - band coefficient, adaptively setting threshold of different image region, setting up flag matrix, and filtering after decoding to eliminate domino effect of split
這種編碼方法主要包括：對原始圖像進行分塊、濾波；對最低頻子帶系數單獨編碼；對各塊圖像自適應地進行閾值設置；設立標志矩陣；解碼后進行濾波消除分塊效應。Abstract : the threshold algorithm of the target detection is often used to detect target echo signals. its performance is based on signals - noise ratio. when signals - noise ratio is great than 6. 7, the target can be detected. in order to increase the signals - noise ratio, matching filter is often used. if the system is narrow band system, the noise is color noise and matching filter cannot be used. therefore, the signals - noise ratio cannot be increased. however, the geometrical characteristic of the laser echo signal is different with the noise. this paper advises the algorithm that detects the target by the geometrical characteristic. when signals - noise ratio is great than 2, this algorithm can detect target. this algorithm has been used in practice
文摘:目標檢測的閾值法經常用於檢測目標的回波信號.它的性能取決于信噪比，當信噪比大於6 . 7時，能夠檢測出目標.為了提高信噪比，經常採用匹配濾波器.如果系統是窄帶系統，噪聲為色噪聲，無法使用匹配濾波器，不能提高信噪比.激光回波信號的幾何特徵不同於噪聲.提出了一種利用這種幾何特徵檢測目標的演算法.當信噪比大於2時，該演算法能夠檢測出目標.該演算法已經實際應用The dwt decomposes an image into a series of different scalesmaller images, then detail coefficients are enhanced based on threshold shrinkage filter, and obtains the enhanced image after inverse wavelet transform
圖像經過小波分解后可以得到一系列不同尺度上的子帶圖像，在不同尺度的子帶圖像上進行基於閾值收縮濾波的細節系數增強，再進行小波重構，即可得到增強后的圖像。分享友人