How to set roi extend_factor?

Question

How to set roi extend_factor?

Opened this issue 2 years ago · 0 comments

bbox_roi_extractor=dict(
            type='OBBSingleRoIExtractor',
            roi_layer=dict(type='RoIAlignRotated', out_size=7, sample_num=2),
            out_channels=256,
            extend_factor=(1.4, 1.2),
            featmap_strides=[4, 8, 16, 32])

Thank you for your great work! I want to how why extend roi here? How to set extend_factor?