utils/nms.py [85:99]:
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    area = (x2-x1)*(y2-y1)*(z2-z1)

    I = np.argsort(score)
    pick = []
    while (I.size!=0):
        last = I.size
        i = I[-1]
        pick.append(i)

        xx1 = np.maximum(x1[i], x1[I[:last-1]])
        yy1 = np.maximum(y1[i], y1[I[:last-1]])
        zz1 = np.maximum(z1[i], z1[I[:last-1]])
        xx2 = np.minimum(x2[i], x2[I[:last-1]])
        yy2 = np.minimum(y2[i], y2[I[:last-1]])
        zz2 = np.minimum(z2[i], z2[I[:last-1]])
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utils/nms.py [124:138]:
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    area = (x2-x1)*(y2-y1)*(z2-z1)

    I = np.argsort(score)
    pick = []
    while (I.size!=0):
        last = I.size
        i = I[-1]
        pick.append(i)

        xx1 = np.maximum(x1[i], x1[I[:last-1]])
        yy1 = np.maximum(y1[i], y1[I[:last-1]])
        zz1 = np.maximum(z1[i], z1[I[:last-1]])
        xx2 = np.minimum(x2[i], x2[I[:last-1]])
        yy2 = np.minimum(y2[i], y2[I[:last-1]])
        zz2 = np.minimum(z2[i], z2[I[:last-1]])
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