多项选择题
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)
A.CascadeClassifierB.detectMultiScaleC.readNetFromCaffeD.blobFromImage
A.Haar-like特征B.PCAC.LBPD.Haar分类器
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