utils/nms.py [87:101]:
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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 [129:143]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    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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