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[Bugfix] Fix incorrect llava next feature size calculation #8496

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merged 1 commit into from
Sep 20, 2024
Merged

[Bugfix] Fix incorrect llava next feature size calculation #8496

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14 changes: 8 additions & 6 deletions vllm/model_executor/models/llava_next.py
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Original file line number Diff line number Diff line change
Expand Up @@ -87,17 +87,19 @@ def _get_llava_next_num_unpadded_features(
current_height = npatches * num_patch_height
current_width = npatches * num_patch_width

aspect_ratio = original_width / original_height
original_aspect_ratio = original_width / original_height
current_aspect_ratio = current_width / current_height

if aspect_ratio > current_aspect_ratio:
new_height = (original_height * current_width) // original_width
if original_aspect_ratio > current_aspect_ratio:
scale_factor = current_width / original_width
new_height = int(original_height * scale_factor)
padding = (current_height - new_height) // 2
current_height -= padding * 2
current_height -= 2 * padding
else:
new_width = (original_width * current_height) // original_height
scale_factor = current_height / original_height
new_width = int(original_width * scale_factor)
padding = (current_width - new_width) // 2
current_width -= padding * 2
current_width -= 2 * padding

unpadded_features = current_height * current_width
newline_features = current_height
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