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Author SHA1 Message Date
许瑞
efed5faa53 feat: modify foot note bbox tmp 2024-03-23 14:34:25 +08:00
5 changed files with 32 additions and 165 deletions

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@@ -90,9 +90,9 @@ def ocr_parse_core(book_name, ocr_pdf_path, ocr_pdf_model_info, start_page_id=0,
if __name__ == '__main__':
pdf_path = r"/home/cxu/workspace/Magic-PDF/ocr_demo/j.1540-627x.2006.00176.x.pdf"
json_file_path = r"/home/cxu/workspace/Magic-PDF/ocr_demo/j.1540-627x.2006.00176.x.json"
ocr_local_parse(pdf_path, json_file_path)
# pdf_path = r"/home/cxu/workspace/Magic-PDF/ocr_demo/j.1540-627x.2006.00176.x.pdf"
# json_file_path = r"/home/cxu/workspace/Magic-PDF/ocr_demo/j.1540-627x.2006.00176.x.json"
# ocr_local_parse(pdf_path, json_file_path)
# book_name = "数学新星网/edu_00001236"
# ocr_online_parse(book_name)
pass

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@@ -72,26 +72,18 @@ def ocr_mk_mm_markdown_with_para(pdf_info_dict: dict):
markdown = []
for _, page_info in pdf_info_dict.items():
paras_of_layout = page_info.get("para_blocks")
page_markdown = ocr_mk_mm_markdown_with_para_core(paras_of_layout, "mm")
page_markdown = ocr_mk_mm_markdown_with_para_core(paras_of_layout)
markdown.extend(page_markdown)
return '\n\n'.join(markdown)
def ocr_mk_nlp_markdown_with_para(pdf_info_dict: dict):
markdown = []
for _, page_info in pdf_info_dict.items():
paras_of_layout = page_info.get("para_blocks")
page_markdown = ocr_mk_mm_markdown_with_para_core(paras_of_layout, "nlp")
markdown.extend(page_markdown)
return '\n\n'.join(markdown)
def ocr_mk_mm_markdown_with_para_and_pagination(pdf_info_dict: dict):
markdown_with_para_and_pagination = []
for page_no, page_info in pdf_info_dict.items():
paras_of_layout = page_info.get("para_blocks")
if not paras_of_layout:
continue
page_markdown = ocr_mk_mm_markdown_with_para_core(paras_of_layout, "mm")
page_markdown = ocr_mk_mm_markdown_with_para_core(paras_of_layout)
markdown_with_para_and_pagination.append({
'page_no': page_no,
'md_content': '\n\n'.join(page_markdown)
@@ -99,7 +91,7 @@ def ocr_mk_mm_markdown_with_para_and_pagination(pdf_info_dict: dict):
return markdown_with_para_and_pagination
def ocr_mk_mm_markdown_with_para_core(paras_of_layout, mode):
def ocr_mk_mm_markdown_with_para_core(paras_of_layout):
page_markdown = []
for paras in paras_of_layout:
for para in paras:
@@ -115,12 +107,8 @@ def ocr_mk_mm_markdown_with_para_core(paras_of_layout, mode):
elif span_type == ContentType.InterlineEquation:
content = f"\n$$\n{span['content']}\n$$\n"
elif span_type in [ContentType.Image, ContentType.Table]:
if mode == 'mm':
content = f"\n![]({join_path(s3_image_save_path, span['image_path'])})\n"
elif mode == 'nlp':
pass
if content:
para_text += content + ' '
content = f"\n![]({join_path(s3_image_save_path, span['image_path'])})\n"
para_text += content + ' '
page_markdown.append(para_text.strip() + ' ')
return page_markdown

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@@ -9,7 +9,7 @@ from magic_pdf.libs.ocr_content_type import ContentType
LINE_STOP_FLAG = ['.', '!', '?', '', '', '',"", ":", ")", "", ";"]
INLINE_EQUATION = ContentType.InlineEquation
INTERLINE_EQUATION = ContentType.InterlineEquation
TEXT = ContentType.Text
TEXT = "text"
def __get_span_text(span):
@@ -20,7 +20,7 @@ def __get_span_text(span):
return c
def __detect_list_lines(lines, new_layout_bboxes, lang):
def __detect_list_lines(lines, new_layout_bboxes, lang='en'):
"""
探测是否包含了列表,并且把列表的行分开.
这样的段落特点是,顶格字母大写/数字,紧跟着几行缩进的。缩进的行首字母含小写的。
@@ -315,9 +315,9 @@ def __split_para_in_layoutbox(lines_group, new_layout_bbox, lang="en", char_avg_
return layout_paras, list_info
def __connect_list_inter_layout(layout_paras, new_layout_bbox, layout_list_info, page_num, lang):
def __connect_list_inter_layout(layout_paras, new_layout_bbox, layout_list_info, page_num, lang="en"):
"""
如果上个layout的最后一个段落是列表下一个layout的第一个段落也是列表那么将他们连接起来。 TODO 因为没有区分列表和段落,所以这个方法暂时不实现。
如果上个layout的最后一个段落是列表下一个layout的第一个段落也是列表那么将他们连接起来。
根据layout_list_info判断是不是列表。下个layout的第一个段如果不是列表那么看他们是否有几行都有相同的缩进。
"""
for i in range(1, len(layout_paras)):
@@ -345,34 +345,7 @@ def __connect_list_inter_layout(layout_paras, new_layout_bbox, layout_list_info,
pre_last_para.extend(may_list_lines)
layout_paras[i] = layout_paras[i][len(may_list_lines):]
return layout_paras, [layout_list_info[0][0], layout_list_info[-1][1]] # 同时还返回了这个页面级别的开头、结尾是不是列表的信息
def __connect_list_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, pre_page_list_info, next_page_list_info, page_num, lang):
"""
如果上个layout的最后一个段落是列表下一个layout的第一个段落也是列表那么将他们连接起来。 TODO 因为没有区分列表和段落,所以这个方法暂时不实现。
根据layout_list_info判断是不是列表。下个layout的第一个段如果不是列表那么看他们是否有几行都有相同的缩进。
"""
if pre_page_list_info[1] and not next_page_list_info[0]: # 前一个是列表结尾,后一个是非列表开头,此时检测是否有相同的缩进
logger.info(f"连接page {page_num} 内的list")
# 向layout_paras[i] 寻找开头具有相同缩进的连续的行
may_list_lines = []
for j in range(len(next_page_paras[0])):
line = next_page_paras[0][j]
if len(line)==1: # 只可能是一行,多行情况再需要分析了
if line[0]['bbox'][0] > __find_layout_bbox_by_line(line[0]['bbox'], next_page_layout_bbox)[0]:
may_list_lines.append(line[0])
else:
break
else:
break
# 如果这些行的缩进是相等的那么连到上一个layout的最后一个段落上。
if len(may_list_lines)>0 and len(set([x['bbox'][0] for x in may_list_lines]))==1:
pre_page_paras[-1].append(may_list_lines)
next_page_paras[0] = next_page_paras[0][len(may_list_lines):]
return True
return False
return layout_paras
def __find_layout_bbox_by_line(line_bbox, layout_bboxes):
@@ -385,7 +358,7 @@ def __find_layout_bbox_by_line(line_bbox, layout_bboxes):
return None
def __connect_para_inter_layoutbox(layout_paras, new_layout_bbox, lang):
def __connect_para_inter_layoutbox(layout_paras, new_layout_bbox, lang="en"):
"""
layout之间进行分段。
主要是计算前一个layOut的最后一行和后一个layout的第一行是否可以连接。
@@ -427,7 +400,7 @@ def __connect_para_inter_layoutbox(layout_paras, new_layout_bbox, lang):
return connected_layout_paras
def __connect_para_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, page_num, lang):
def __connect_para_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, lang):
"""
连接起来相邻两个页面的段落——前一个页面最后一个段落和后一个页面的第一个段落。
是否可以连接的条件:
@@ -463,84 +436,8 @@ def __connect_para_inter_page(pre_page_paras, next_page_paras, pre_page_layout_b
else:
return False
def find_consecutive_true_regions(input_array):
start_index = None # 连续True区域的起始索引
regions = [] # 用于保存所有连续True区域的起始和结束索引
for i in range(len(input_array)):
# 如果我们找到了一个True值并且当前并没有在连续True区域中
if input_array[i] and start_index is None:
start_index = i # 记录连续True区域的起始索引
# 如果我们找到了一个False值并且当前在连续True区域中
elif not input_array[i] and start_index is not None:
# 如果连续True区域长度大于1那么将其添加到结果列表中
if i - start_index > 1:
regions.append((start_index, i-1))
start_index = None # 重置起始索引
# 如果最后一个元素是True那么需要将最后一个连续True区域加入到结果列表中
if start_index is not None and len(input_array) - start_index > 1:
regions.append((start_index, len(input_array)-1))
return regions
def __connect_middle_align_text(page_paras, new_layout_bbox, page_num, lang):
"""
找出来中间对齐的连续单行文本,如果连续行高度相同,那么合并为一个段落。
一个line居中的条件是
1. 水平中心点跨越layout的中心点。
2. 左右两侧都有空白
"""
for layout_i, layout_para in enumerate(page_paras):
layout_box = new_layout_bbox[layout_i]
single_line_paras_tag = []
for i in range(len(layout_para)):
single_line_paras_tag.append(len(layout_para[i])==1 and layout_para[i][0]['spans'][0]['type']==TEXT)
"""找出来连续的单行文本,如果连续行高度相同,那么合并为一个段落。"""
consecutive_single_line_indices = find_consecutive_true_regions(single_line_paras_tag)
if len(consecutive_single_line_indices)>0:
index_offset = 0
"""检查这些行是否是高度相同的,居中的"""
for start, end in consecutive_single_line_indices:
start += index_offset
end += index_offset
line_hi = np.array([line[0]['bbox'][3]-line[0]['bbox'][1] for line in layout_para[start:end+1]])
first_line_text = ''.join([__get_span_text(span) for span in layout_para[start][0]['spans']])
if "Table" in first_line_text or "Figure" in first_line_text:
pass
logger.info(line_hi.std())
if line_hi.std()<2:
"""行高度相同,那么判断是否居中"""
all_left_x0 = [line[0]['bbox'][0] for line in layout_para[start:end+1]]
all_right_x1 = [line[0]['bbox'][2] for line in layout_para[start:end+1]]
layout_center = (layout_box[0] + layout_box[2]) / 2
if all([x0 < layout_center < x1 for x0, x1 in zip(all_left_x0, all_right_x1)]) \
and not all([x0==layout_box[0] for x0 in all_left_x0]) \
and not all([x1==layout_box[2] for x1 in all_right_x1]):
merge_para = [l[0] for l in layout_para[start:end+1]]
para_text = ''.join([__get_span_text(span) for line in merge_para for span in line['spans']])
logger.info(para_text)
layout_para[start:end+1] = [merge_para]
index_offset -= end-start
return
def __merge_signle_list_text(page_paras, new_layout_bbox, page_num, lang):
"""
找出来连续的单行文本,如果首行顶格,接下来的几个单行段落缩进对齐,那么合并为一个段落。
"""
pass
def __do_split_page(blocks, layout_bboxes, new_layout_bbox, page_num, lang):
def __do_split(blocks, layout_bboxes, new_layout_bbox, page_num, lang="en"):
"""
根据line和layout情况进行分段
先实现一个根据行末尾特征分段的简单方法。
@@ -554,52 +451,35 @@ def __do_split_page(blocks, layout_bboxes, new_layout_bbox, page_num, lang):
"""
lines_group = __group_line_by_layout(blocks, layout_bboxes, lang) # block内分段
layout_paras, layout_list_info = __split_para_in_layoutbox(lines_group, new_layout_bbox, lang) # layout内分段
layout_paras2, page_list_info = __connect_list_inter_layout(layout_paras, new_layout_bbox, layout_list_info, page_num, lang) # layout之间连接列表段落
layout_paras2 = __connect_list_inter_layout(layout_paras, new_layout_bbox, layout_list_info, page_num, lang) # layout之间连接列表段落
connected_layout_paras = __connect_para_inter_layoutbox(layout_paras2, new_layout_bbox, lang) # layout间链接段落
return connected_layout_paras
return connected_layout_paras, page_list_info
def para_split(pdf_info_dict, lang="en"):
"""
根据line和layout情况进行分段
"""
new_layout_of_pages = [] # 数组的数组每个元素是一个页面的layoutS
all_page_list_info = [] # 保存每个页面开头和结尾是否是列表
for page_num, page in pdf_info_dict.items():
blocks = page['preproc_blocks']
layout_bboxes = page['layout_bboxes']
new_layout_bbox = __common_pre_proc(blocks, layout_bboxes)
new_layout_of_pages.append(new_layout_bbox)
splited_blocks, page_list_info = __do_split_page(blocks, layout_bboxes, new_layout_bbox, page_num, lang)
all_page_list_info.append(page_list_info)
splited_blocks = __do_split(blocks, layout_bboxes, new_layout_bbox, page_num, lang)
page['para_blocks'] = splited_blocks
"""连接页面与页面之间的可能合并的段落"""
pdf_infos = list(pdf_info_dict.values())
for page_num, page in enumerate(pdf_info_dict.values()):
if page_num==0:
for i, page in enumerate(pdf_info_dict.values()):
if i==0:
continue
pre_page_paras = pdf_infos[page_num-1]['para_blocks']
next_page_paras = pdf_infos[page_num]['para_blocks']
pre_page_layout_bbox = new_layout_of_pages[page_num-1]
next_page_layout_bbox = new_layout_of_pages[page_num]
pre_page_paras = pdf_infos[i-1]['para_blocks']
next_page_paras = pdf_infos[i]['para_blocks']
pre_page_layout_bbox = new_layout_of_pages[i-1]
next_page_layout_bbox = new_layout_of_pages[i]
is_conn= __connect_para_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, page_num, lang)
is_conn= __connect_para_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, lang)
if is_conn:
logger.info(f"连接了第{page_num-1}页和第{page_num}页的段落")
is_list_conn = __connect_list_inter_page(pre_page_paras, next_page_paras, pre_page_layout_bbox, next_page_layout_bbox, all_page_list_info[page_num-1], all_page_list_info[page_num], page_num, lang)
if is_list_conn:
logger.info(f"连接了第{page_num-1}页和第{page_num}页的列表段落")
"""接下来可能会漏掉一些特别的一些可以合并的内容,对他们进行段落连接
1. 正文中有时出现一个行顶格,接下来几行缩进的情况。
2. 居中的一些连续单行,如果高度相同,那么可能是一个段落。
"""
for page_num, page in enumerate(pdf_info_dict.values()):
page_paras = page['para_blocks']
new_layout_bbox = new_layout_of_pages[page_num]
__connect_middle_align_text(page_paras, new_layout_bbox, page_num, lang)
__merge_signle_list_text(page_paras, new_layout_bbox, page_num, lang)
logger.info(f"连接了第{i-1}页和第{i}页的段落")

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@@ -7,7 +7,7 @@ from magic_pdf.dict2md.ocr_mkcontent import (
ocr_mk_nlp_markdown,
ocr_mk_mm_markdown,
ocr_mk_mm_standard_format,
ocr_mk_mm_markdown_with_para, ocr_mk_mm_markdown_with_para_and_pagination, ocr_mk_nlp_markdown_with_para,
ocr_mk_mm_markdown_with_para, ocr_mk_mm_markdown_with_para_and_pagination,
)
from magic_pdf.libs.commons import (
read_file,
@@ -510,8 +510,7 @@ def ocr_pdf_intermediate_dict_to_markdown_with_para(jso: dict, debug_mode=False)
pdf_intermediate_dict = jso["pdf_intermediate_dict"]
# 将 pdf_intermediate_dict 解压
pdf_intermediate_dict = JsonCompressor.decompress_json(pdf_intermediate_dict)
# markdown_content = ocr_mk_mm_markdown_with_para(pdf_intermediate_dict)
markdown_content = ocr_mk_nlp_markdown_with_para(pdf_intermediate_dict)
markdown_content = ocr_mk_mm_markdown_with_para(pdf_intermediate_dict)
jso["content"] = markdown_content
logger.info(
f"book_name is:{get_data_source(jso)}/{jso['file_id']},markdown content length is {len(markdown_content)}",

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@@ -54,8 +54,8 @@ def convert_to_train_format(jso: dict) -> []:
n_bbox = {"category_id": 10, "bbox": inter_equation["bbox"]}
bboxes.append(n_bbox)
for footnote in v['bak_footer_note_bboxes']:
n_bbox = {"category_id": 5, "bbox": footnote["bbox"]}
for footnote_bbox in v["bak_footer_note_bboxes"]:
n_bbox = {"category_id": 5, "bbox": list(footnote_bbox)}
bboxes.append(n_bbox)
info["bboxes"] = bboxes