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refactor(pdf_parse): improve character spacing handling in PDF text extraction #1386

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Merged
myhloli merged 1 commit into from
Jan 2, 2025
Merged

refactor(pdf_parse): improve character spacing handling in PDF text extraction #1386

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11 changes: 7 additions & 4 deletions magic_pdf/pdf_parse_union_core_v2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -91,10 +91,13 @@ def chars_to_content(span):

content = ''
for char in span['chars']:
# 如果下一个char的x0和上一个char的x1距离超过一个字符宽度，则需要在中间插入一个空格
if char['bbox'][0] - span['chars'][span['chars'].index(char) - 1]['bbox'][2] > char_avg_width:
content += ' '
content += char['c']
# 如果下一个char的x0和上一个char的x1距离超过0.25个字符宽度，则需要在中间插入一个空格
char1 = char
char2 = span['chars'][span['chars'].index(char) + 1] if span['chars'].index(char) + 1 < len(span['chars']) else None
if char2 and char2['bbox'][0] - char1['bbox'][2] > char_avg_width * 0.25 and char['c'] != ' ' and char2['c'] != ' ':
content += f"{char['c']} "
else:
content += char['c']

content = __replace_ligatures(content)
span['content'] = __replace_0xfffd(content)
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