表格的表头中有换行会被识别成两行

[Donny2030]

此pdf文件的表格的表头中会有换行，会被错误的识别成多行，调整snap_y_tolerance参数也不能被正确的识别（调太高会导致错误的合并），我设置的参数为table_settings = {
"vertical_strategy": "lines", # 可选策略，lines 或者 text
"horizontal_strategy": "lines", # 同上
"snap_y_tolerance": 7, # 增加此值以合并换行的表头
"min_words_horizontal": 2,
"snap_tolerance": 5, # 增加容差，帮助合并线条
"join_tolerance": 5, # 增加容差，帮助连接线条
"text_y_tolerance": 5,
"intersection_y_tolerance": 5
}，请大佬帮忙看看有什么办法正确识别。
test22.pdf

[jsvine]

Hi @Donny2030, the visual debugging tools are helpful in this case. Here you can see that the issue is extra graphical elements in the header:

page = pdf.pages[0]
im = page.to_image()
im.debug_tablefinder()

You can use the Page.filter(...) method to remove them (with the specific filtering rules determined by examining the objects themselves):

def remove_header_cruft(obj):
    return obj.get("non_stroking_color") != (0.852,)

filtered = page.filter(remove_header_cruft)
filtered.to_image().debug_tablefinder()

filtered.extract_table()

[['序\n号', '资产类别', '穿透前', None, '穿透后', None],
 [None, None, '资产余额（元）', '占穿透前总\n资产的比例\n（%）', '资产余额（元）', '占穿透后总\n资产的比例\n（%）'],
 ['1', '现金及银\n行存款', '2,876,646.27', '0.11', '31,038,270.26', '1.17'],
 ['2', '同业存单', '-', '-', '-', '-'],
 ['3', '拆放同业\n及买入返\n售', '-', '-', '2,958,188.11', '0.11'],
 ['4', '债券', '1,114,006,169.89', '41.88', '2,423,551,112.36', '91.10'],
 ['5', '非标准化\n债权类资\n产', '202,812,602.74', '7.62', '202,812,602.74', '7.62'],
 ['6', '权益类投\n资', '-', '-', '-', '-'],
 ['7', '金融衍生\n品', '-', '-', '-', '-'],
 ['8', '代客境外\n理财投资\nQDII', '-', '-', '-', '-'],
 ['9', '商品类资\n产', '-', '-', '-', '-']]