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aosokin avatar aosokin commented on September 13, 2024

Note that line 371

os2d/os2d/modeling/head.py

Line 371 in 96c488b

default_boxes_xyxy_wrt_fm = self.box_grid_generator_feature_map_level.create_strided_boxes_columnfirst(fm_size=image_fm_size)

and line 405

os2d/os2d/modeling/head.py

Line 405 in 96c488b

default_boxes_xyxy_wrt_image = self.box_grid_generator_image_level.create_strided_boxes_columnfirst(fm_size=image_fm_size)

depend on self.box_grid_generator_feature_map_level and self.box_grid_generator_image_level, respectively.
These two are different objects:

os2d/os2d/modeling/head.py

Lines 218 to 220 in 96c488b

self.box_grid_generator_image_level = BoxGridGenerator(box_size=rec_field, box_stride=stride)
self.box_grid_generator_feature_map_level = BoxGridGenerator(box_size=self.aligner.network_receptive_field,
box_stride=self.aligner.network_stride)

If I remember correctly, the first one produces boxes in the coordinates w.r.t. the feature map, the second one - w.r.t. the input image.

from os2d.

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