多项选择题
A.色调B.饱和度C.亮度D.透明度
A.SiftB.SobelC.CannyD.Roberts
A.hist()B.calcHist()C.histogram()D.histogram2D()
A.(W-w+1)×(H-h+1)B.(W-w)×(H-h)C.(W×H)D.(w×h)
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