Excuse me, dear author! Why transposes the flow_offset[0] and flow_offset[1]?

EdwardLeeLPZ / PowerBEV

POWERBEV, a novel and elegant vision-based end-to-end framework that only consists of 2D convolutional layers to perform perception and forecasting of multiple objects in BEVs.

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Excuse me, dear author! Why transposes the flow_offset[0] and flow_offset[1]? #6

Closed WangzcBruce closed 6 months ago

WangzcBruce commented 8 months ago

Excuse me, dear author! Why transposes the flow_offset[0] and flow_offset[1]? While the related codes in the fiery don't take this action.

EdwardLeeLPZ commented 8 months ago

Hi,

The use of transposes is to match the definition of offset in GT generation. The definition here is somewhat trivial, but actually doesn't affect the warped instance segmentation.