logarithmic adj. 對(duì)數(shù)的。 logarithmic function 對(duì)數(shù)函數(shù)。 a logarithmic scale 計(jì)算尺。 logarithmic series 對(duì)數(shù)級(jí)數(shù)。 the logarithmic table 對(duì)數(shù)表。 adv. -cally 用對(duì)數(shù)。
Based on the multiplicative speckle model, a new filtering algorithm based on wavelet transform was developed . first, the multiplicative speckle noise was changed by logarithmic transform into additive noise, which simplified the subsequent speckle suppression . the speckle suppression was carried out in the process of wavelet transform of the logarithmic transformed image 針對(duì)斑點(diǎn)噪聲的乘性模型特點(diǎn),構(gòu)造了一種基于小波分析的濾波器:對(duì)sar圖像進(jìn)行對(duì)數(shù)變換,利用小波變換對(duì)對(duì)數(shù)圖像進(jìn)行濾波處理,再通過指數(shù)變換得到去噪圖像。
Based on the multiplicative speckle model, a new filtering algorithm based on wavelet transform was developed . first, the multiplicative speckle noise was changed by logarithmic transform into additive noise, which simplified the subsequent speckle suppression . the speckle suppression was carried out in the process of wavelet transform of the logarithmic transformed image 針對(duì)斑點(diǎn)噪聲的乘性模型特點(diǎn),構(gòu)造了一種基于小波分析的濾波器:對(duì)sar圖像進(jìn)行對(duì)數(shù)變換,利用小波變換對(duì)對(duì)數(shù)圖像進(jìn)行濾波處理,再通過指數(shù)變換得到去噪圖像。