guided filtering
2021年12月22日—Aguidedfilterisusedindigitalimagerestorationbyremovingnoisefromtheimage.Guidedfiltersareusedwithcolourimagesalso.Inthe ...,Aguidedfilterisanedge-preservingsmoothingimagefilter.Aswithabilateralfilter,itcanfilteroutnoiseortexturewhil...
导向滤波原理(Guided Filter)
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如果方差大,即是边缘的话,ak就约等于1(epsilon很小),因此,b就约等于0。相当于输出等于输入只是乘以一个约等于1的系数,这样可以保证梯度的比例关系不变。
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