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matcher.py: empty annotation compatibility #135

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matcher.py: empty annotation compatibility #135

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13 changes: 9 additions & 4 deletions mask2former/modeling/matcher.py
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Original file line number Diff line number Diff line change
Expand Up @@ -134,11 +134,16 @@ def memory_efficient_forward(self, outputs, targets):
with autocast(enabled=False):
out_mask = out_mask.float()
tgt_mask = tgt_mask.float()
# Compute the focal loss between masks
cost_mask = batch_sigmoid_ce_loss_jit(out_mask, tgt_mask)

# Compute the dice loss betwen masks
cost_dice = batch_dice_loss_jit(out_mask, tgt_mask)
is_annotation_empty = out_mask.shape[0] == 0 or tgt_mask.shape[0] == 0
if is_annotation_empty:
# Compute the focal loss between masks
cost_mask = batch_sigmoid_ce_loss(out_mask, tgt_mask)
# Compute the dice loss between masks
cost_dice = batch_dice_loss(out_mask, tgt_mask)
else:
cost_mask = batch_sigmoid_ce_loss_jit(out_mask, tgt_mask)
cost_dice = batch_dice_loss_jit(out_mask, tgt_mask)

# Final cost matrix
C = (
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