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Showing content from https://github.com/open-mmlab/mmdetection3d/issues/986 below:

anchor range in Anchor3DRangeGenerator · Issue #986 · open-mmlab/mmdetection3d · GitHub

Simple question: why z axis of anchor range in Anchor3DRangeGenerator is same ? for code comment is z_min and z_max

anchor_range (torch.Tensor | list[float]): Range of anchors with
                shape [6]. The order is consistent with that of anchors, i.e.,
                (x_min, y_min, z_min, x_max, y_max, z_max).

like config below, they all use same value in z axis, Why?

                [0, -40.0, -0.6, 70.4, 40.0, -0.6],
                [0, -40.0, -0.6, 70.4, 40.0, -0.6],
                [0, -40.0, -1.78, 70.4, 40.0, -1.78],

and in my dataset there is a problem with this anchor z axis is higher than ground truth like :

Is there a way to adjust to this anchor range to feat my dataset ?


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