UnisMindMap/mineru/backend/hybrid/hybrid_analyze.py

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# Copyright (c) Opendatalab. All rights reserved.
import os
import time
from collections import defaultdict
import cv2
import numpy as np
from loguru import logger
from mineru_vl_utils import MinerUClient
from mineru_vl_utils.structs import BlockType
from tqdm import tqdm
from mineru.backend.hybrid.hybrid_model_output_to_middle_json import result_to_middle_json
from mineru.backend.pipeline.model_init import HybridModelSingleton
from mineru.backend.vlm.vlm_analyze import ModelSingleton
from mineru.data.data_reader_writer import DataWriter
from mineru.utils.config_reader import get_device
from mineru.utils.enum_class import ImageType, NotExtractType
from mineru.utils.model_utils import crop_img, get_vram, clean_memory
from mineru.utils.ocr_utils import get_adjusted_mfdetrec_res, get_ocr_result_list, sorted_boxes, merge_det_boxes, \
update_det_boxes, OcrConfidence
from mineru.utils.pdf_classify import classify
from mineru.utils.pdf_image_tools import load_images_from_pdf
os.environ['PYTORCH_ENABLE_MPS_FALLBACK'] = '1' # 让mps可以fallback
os.environ['NO_ALBUMENTATIONS_UPDATE'] = '1' # 禁止albumentations检查更新
MFR_BASE_BATCH_SIZE = 16
OCR_DET_BASE_BATCH_SIZE = 16
not_extract_list = [item.value for item in NotExtractType]
def ocr_classify(pdf_bytes, parse_method: str = 'auto',) -> bool:
# 确定OCR设置
_ocr_enable = False
if parse_method == 'auto':
if classify(pdf_bytes) == 'ocr':
_ocr_enable = True
elif parse_method == 'ocr':
_ocr_enable = True
return _ocr_enable
def ocr_det(
hybrid_pipeline_model,
np_images,
results,
mfd_res,
_ocr_enable,
batch_radio: int = 1,
):
ocr_res_list = []
if not hybrid_pipeline_model.enable_ocr_det_batch:
# 非批处理模式 - 逐页处理
for np_image, page_mfd_res, page_results in tqdm(
zip(np_images, mfd_res, results),
total=len(np_images),
desc="OCR-det"
):
ocr_res_list.append([])
img_height, img_width = np_image.shape[:2]
for res in page_results:
if res['type'] not in not_extract_list:
continue
x0 = max(0, int(res['bbox'][0] * img_width))
y0 = max(0, int(res['bbox'][1] * img_height))
x1 = min(img_width, int(res['bbox'][2] * img_width))
y1 = min(img_height, int(res['bbox'][3] * img_height))
if x1 <= x0 or y1 <= y0:
continue
res['poly'] = [x0, y0, x1, y0, x1, y1, x0, y1]
new_image, useful_list = crop_img(
res, np_image, crop_paste_x=50, crop_paste_y=50
)
adjusted_mfdetrec_res = get_adjusted_mfdetrec_res(
page_mfd_res, useful_list
)
bgr_image = cv2.cvtColor(new_image, cv2.COLOR_RGB2BGR)
ocr_res = hybrid_pipeline_model.ocr_model.ocr(
bgr_image, mfd_res=adjusted_mfdetrec_res, rec=False
)[0]
if ocr_res:
ocr_result_list = get_ocr_result_list(
ocr_res, useful_list, _ocr_enable, bgr_image, hybrid_pipeline_model.lang
)
ocr_res_list[-1].extend(ocr_result_list)
else:
# 批处理模式 - 按语言和分辨率分组
# 收集所有需要OCR检测的裁剪图像
all_cropped_images_info = []
for np_image, page_mfd_res, page_results in zip(
np_images, mfd_res, results
):
ocr_res_list.append([])
img_height, img_width = np_image.shape[:2]
for res in page_results:
if res['type'] not in not_extract_list:
continue
x0 = max(0, int(res['bbox'][0] * img_width))
y0 = max(0, int(res['bbox'][1] * img_height))
x1 = min(img_width, int(res['bbox'][2] * img_width))
y1 = min(img_height, int(res['bbox'][3] * img_height))
if x1 <= x0 or y1 <= y0:
continue
res['poly'] = [x0, y0, x1, y0, x1, y1, x0, y1]
new_image, useful_list = crop_img(
res, np_image, crop_paste_x=50, crop_paste_y=50
)
adjusted_mfdetrec_res = get_adjusted_mfdetrec_res(
page_mfd_res, useful_list
)
bgr_image = cv2.cvtColor(new_image, cv2.COLOR_RGB2BGR)
all_cropped_images_info.append((
bgr_image, useful_list, adjusted_mfdetrec_res, ocr_res_list[-1]
))
# 按分辨率分组并同时完成padding
RESOLUTION_GROUP_STRIDE = 64 # 32
resolution_groups = defaultdict(list)
for crop_info in all_cropped_images_info:
cropped_img = crop_info[0]
h, w = cropped_img.shape[:2]
# 直接计算目标尺寸并用作分组键
target_h = ((h + RESOLUTION_GROUP_STRIDE - 1) // RESOLUTION_GROUP_STRIDE) * RESOLUTION_GROUP_STRIDE
target_w = ((w + RESOLUTION_GROUP_STRIDE - 1) // RESOLUTION_GROUP_STRIDE) * RESOLUTION_GROUP_STRIDE
group_key = (target_h, target_w)
resolution_groups[group_key].append(crop_info)
# 对每个分辨率组进行批处理
for (target_h, target_w), group_crops in tqdm(resolution_groups.items(), desc=f"OCR-det"):
# 对所有图像进行padding到统一尺寸
batch_images = []
for crop_info in group_crops:
img = crop_info[0]
h, w = img.shape[:2]
# 创建目标尺寸的白色背景
padded_img = np.ones((target_h, target_w, 3), dtype=np.uint8) * 255
padded_img[:h, :w] = img
batch_images.append(padded_img)
# 批处理检测
det_batch_size = min(len(batch_images), batch_radio*OCR_DET_BASE_BATCH_SIZE)
batch_results = hybrid_pipeline_model.ocr_model.text_detector.batch_predict(batch_images, det_batch_size)
# 处理批处理结果
for crop_info, (dt_boxes, _) in zip(group_crops, batch_results):
bgr_image, useful_list, adjusted_mfdetrec_res, ocr_page_res_list = crop_info
if dt_boxes is not None and len(dt_boxes) > 0:
# 处理检测框
dt_boxes_sorted = sorted_boxes(dt_boxes)
dt_boxes_merged = merge_det_boxes(dt_boxes_sorted) if dt_boxes_sorted else []
# 根据公式位置更新检测框
dt_boxes_final = (update_det_boxes(dt_boxes_merged, adjusted_mfdetrec_res)
if dt_boxes_merged and adjusted_mfdetrec_res
else dt_boxes_merged)
if dt_boxes_final:
ocr_res = [box.tolist() if hasattr(box, 'tolist') else box for box in dt_boxes_final]
ocr_result_list = get_ocr_result_list(
ocr_res, useful_list, _ocr_enable, bgr_image, hybrid_pipeline_model.lang
)
ocr_page_res_list.extend(ocr_result_list)
return ocr_res_list
def mask_image_regions(np_images, results):
# 根据vlm返回的结果在每一页中将image、table、equation块mask成白色背景图像
for np_image, vlm_page_results in zip(np_images, results):
img_height, img_width = np_image.shape[:2]
# 收集需要mask的区域
mask_regions = []
for block in vlm_page_results:
if block['type'] in [BlockType.IMAGE, BlockType.TABLE, BlockType.EQUATION]:
bbox = block['bbox']
# 批量转换归一化坐标到像素坐标,并进行边界检查
x0 = max(0, int(bbox[0] * img_width))
y0 = max(0, int(bbox[1] * img_height))
x1 = min(img_width, int(bbox[2] * img_width))
y1 = min(img_height, int(bbox[3] * img_height))
# 只添加有效区域
if x1 > x0 and y1 > y0:
mask_regions.append((y0, y1, x0, x1))
# 批量应用mask
for y0, y1, x0, x1 in mask_regions:
np_image[y0:y1, x0:x1, :] = 255
return np_images
def normalize_poly_to_bbox(item, page_width, page_height):
"""将poly坐标归一化为bbox"""
poly = item['poly']
x0 = min(max(poly[0] / page_width, 0), 1)
y0 = min(max(poly[1] / page_height, 0), 1)
x1 = min(max(poly[4] / page_width, 0), 1)
y1 = min(max(poly[5] / page_height, 0), 1)
item['bbox'] = [round(x0, 3), round(y0, 3), round(x1, 3), round(y1, 3)]
item.pop('poly', None)
def _process_ocr_and_formulas(
images_pil_list,
results,
language,
inline_formula_enable,
_ocr_enable,
batch_radio: int = 1,
):
"""处理OCR和公式识别"""
# 遍历results,对文本块截图交由OCR识别
# 根据_ocr_enable决定ocr只开det还是det+rec
# 根据inline_formula_enable决定是使用mfd和ocr结合的方式,还是纯ocr方式
# 将PIL图片转换为numpy数组
np_images = [np.asarray(pil_image).copy() for pil_image in images_pil_list]
# 获取混合模型实例
hybrid_model_singleton = HybridModelSingleton()
hybrid_pipeline_model = hybrid_model_singleton.get_model(
lang=language,
formula_enable=inline_formula_enable,
)
if inline_formula_enable:
# 在进行`行内`公式检测和识别前,先将图像中的图片、表格、`行间`公式区域mask掉
np_images = mask_image_regions(np_images, results)
# 公式检测
images_mfd_res = hybrid_pipeline_model.mfd_model.batch_predict(np_images, batch_size=1, conf=0.5)
# 公式识别
inline_formula_list = hybrid_pipeline_model.mfr_model.batch_predict(
images_mfd_res,
np_images,
batch_size=batch_radio*MFR_BASE_BATCH_SIZE,
interline_enable=True,
)
else:
inline_formula_list = [[] for _ in range(len(images_pil_list))]
mfd_res = []
for page_inline_formula_list in inline_formula_list:
page_mfd_res = []
for formula in page_inline_formula_list:
formula['category_id'] = 13
page_mfd_res.append({
"bbox": [int(formula['poly'][0]), int(formula['poly'][1]),
int(formula['poly'][4]), int(formula['poly'][5])],
})
mfd_res.append(page_mfd_res)
# vlm没有执行ocr需要ocr_det
ocr_res_list = ocr_det(
hybrid_pipeline_model,
np_images,
results,
mfd_res,
_ocr_enable,
batch_radio=batch_radio,
)
# 如果需要ocr则做ocr_rec
if _ocr_enable:
need_ocr_list = []
img_crop_list = []
for page_ocr_res_list in ocr_res_list:
for ocr_res in page_ocr_res_list:
if 'np_img' in ocr_res:
need_ocr_list.append(ocr_res)
img_crop_list.append(ocr_res.pop('np_img'))
if len(img_crop_list) > 0:
# Process OCR
ocr_result_list = hybrid_pipeline_model.ocr_model.ocr(img_crop_list, det=False, tqdm_enable=True)[0]
# Verify we have matching counts
assert len(ocr_result_list) == len(need_ocr_list), f'ocr_result_list: {len(ocr_result_list)}, need_ocr_list: {len(need_ocr_list)}'
# Process OCR results for this language
for index, need_ocr_res in enumerate(need_ocr_list):
ocr_text, ocr_score = ocr_result_list[index]
need_ocr_res['text'] = ocr_text
need_ocr_res['score'] = float(f"{ocr_score:.3f}")
if ocr_score < OcrConfidence.min_confidence:
need_ocr_res['category_id'] = 16
else:
layout_res_bbox = [need_ocr_res['poly'][0], need_ocr_res['poly'][1],
need_ocr_res['poly'][4], need_ocr_res['poly'][5]]
layout_res_width = layout_res_bbox[2] - layout_res_bbox[0]
layout_res_height = layout_res_bbox[3] - layout_res_bbox[1]
if (
ocr_text in [
'204号', '20', '2', '2号', '20号', '','204',
'(cid:)', '(ci:)', '(cd:1)', 'cd:)', 'c)', '(cd:)', 'c', 'id:)',
':)', '√:)', '√i:)', 'i:)', ':' , 'i:)',
]
and ocr_score < 0.8
and layout_res_width < layout_res_height
):
need_ocr_res['category_id'] = 16
return inline_formula_list, ocr_res_list, hybrid_pipeline_model
def _normalize_bbox(
inline_formula_list,
ocr_res_list,
images_pil_list,
):
"""归一化坐标并生成最终结果"""
for page_inline_formula_list, page_ocr_res_list, page_pil_image in zip(
inline_formula_list, ocr_res_list, images_pil_list
):
if page_inline_formula_list or page_ocr_res_list:
page_width, page_height = page_pil_image.size
# 处理公式列表
for formula in page_inline_formula_list:
normalize_poly_to_bbox(formula, page_width, page_height)
# 处理OCR结果列表
for ocr_res in page_ocr_res_list:
normalize_poly_to_bbox(ocr_res, page_width, page_height)
def get_batch_ratio(device):
"""
根据显存大小或环境变量获取 batch ratio
"""
# 1. 优先尝试从环境变量获取
"""
c/s架构分离部署时建议通过设置环境变量 MINERU_HYBRID_BATCH_RATIO 来指定 batch ratio
建议的设置值如如下以下配置值已考虑一定的冗余单卡多终端部署时为了保证稳定性可以额外保留一个client端的显存作为整体冗余
单个client端显存大小 | MINERU_HYBRID_BATCH_RATIO
------------------|------------------------
<= 6 GB | 8
<= 4.5 GB | 4
<= 3 GB | 2
<= 2.5 GB | 1
例如
export MINERU_HYBRID_BATCH_RATIO=4
"""
env_val = os.getenv("MINERU_HYBRID_BATCH_RATIO")
if env_val:
try:
batch_ratio = int(env_val)
logger.info(f"hybrid batch ratio (from env): {batch_ratio}")
return batch_ratio
except ValueError as e:
logger.warning(f"Invalid MINERU_HYBRID_BATCH_RATIO value: {env_val}, switching to auto mode. Error: {e}")
# 2. 根据显存自动推断
"""
根据总显存大小粗略估计 batch ratio需要排除掉vllm等推理框架占用的显存开销
"""
gpu_memory = get_vram(device)
if gpu_memory >= 32:
batch_ratio = 16
elif gpu_memory >= 16:
batch_ratio = 8
elif gpu_memory >= 12:
batch_ratio = 4
elif gpu_memory >= 8:
batch_ratio = 2
else:
batch_ratio = 1
logger.info(f"hybrid batch ratio (auto, vram={gpu_memory}GB): {batch_ratio}")
return batch_ratio
def _should_enable_vlm_ocr(ocr_enable: bool, language: str, inline_formula_enable: bool) -> bool:
"""判断是否启用VLM OCR"""
force_enable = os.getenv("MINERU_FORCE_VLM_OCR_ENABLE", "0").lower() in ("1", "true", "yes")
if force_enable:
return True
force_pipeline = os.getenv("MINERU_HYBRID_FORCE_PIPELINE_ENABLE", "0").lower() in ("1", "true", "yes")
return (
ocr_enable
and language in ["ch", "en"]
and inline_formula_enable
and not force_pipeline
)
def doc_analyze(
pdf_bytes,
image_writer: DataWriter | None,
predictor: MinerUClient | None = None,
backend="transformers",
parse_method: str = 'auto',
language: str = 'ch',
inline_formula_enable: bool = True,
model_path: str | None = None,
server_url: str | None = None,
**kwargs,
):
# 初始化预测器
if predictor is None:
predictor = ModelSingleton().get_model(backend, model_path, server_url, **kwargs)
# 加载图像
load_images_start = time.time()
images_list, pdf_doc = load_images_from_pdf(pdf_bytes, image_type=ImageType.PIL)
images_pil_list = [image_dict["img_pil"] for image_dict in images_list]
load_images_time = round(time.time() - load_images_start, 2)
logger.debug(f"load images cost: {load_images_time}, speed: {round(len(images_pil_list)/load_images_time, 3)} images/s")
# 获取设备信息
device = get_device()
# 确定OCR配置
_ocr_enable = ocr_classify(pdf_bytes, parse_method=parse_method)
_vlm_ocr_enable = _should_enable_vlm_ocr(_ocr_enable, language, inline_formula_enable)
infer_start = time.time()
# VLM提取
if _vlm_ocr_enable:
results = predictor.batch_two_step_extract(images=images_pil_list)
hybrid_pipeline_model = None
inline_formula_list = [[] for _ in images_pil_list]
ocr_res_list = [[] for _ in images_pil_list]
else:
batch_ratio = get_batch_ratio(device)
results = predictor.batch_two_step_extract(
images=images_pil_list,
not_extract_list=not_extract_list
)
inline_formula_list, ocr_res_list, hybrid_pipeline_model = _process_ocr_and_formulas(
images_pil_list,
results,
language,
inline_formula_enable,
_ocr_enable,
batch_radio=batch_ratio,
)
_normalize_bbox(inline_formula_list, ocr_res_list, images_pil_list)
infer_time = round(time.time() - infer_start, 2)
logger.debug(f"infer finished, cost: {infer_time}, speed: {round(len(results)/infer_time, 3)} page/s")
# 生成中间JSON
middle_json = result_to_middle_json(
results,
inline_formula_list,
ocr_res_list,
images_list,
pdf_doc,
image_writer,
_ocr_enable,
_vlm_ocr_enable,
hybrid_pipeline_model,
)
clean_memory(device)
return middle_json, results, _vlm_ocr_enable
async def aio_doc_analyze(
pdf_bytes,
image_writer: DataWriter | None,
predictor: MinerUClient | None = None,
backend="transformers",
parse_method: str = 'auto',
language: str = 'ch',
inline_formula_enable: bool = True,
model_path: str | None = None,
server_url: str | None = None,
**kwargs,
):
# 初始化预测器
if predictor is None:
predictor = ModelSingleton().get_model(backend, model_path, server_url, **kwargs)
# 加载图像
load_images_start = time.time()
images_list, pdf_doc = load_images_from_pdf(pdf_bytes, image_type=ImageType.PIL)
images_pil_list = [image_dict["img_pil"] for image_dict in images_list]
load_images_time = round(time.time() - load_images_start, 2)
logger.debug(f"load images cost: {load_images_time}, speed: {round(len(images_pil_list)/load_images_time, 3)} images/s")
# 获取设备信息
device = get_device()
# 确定OCR配置
_ocr_enable = ocr_classify(pdf_bytes, parse_method=parse_method)
_vlm_ocr_enable = _should_enable_vlm_ocr(_ocr_enable, language, inline_formula_enable)
infer_start = time.time()
# VLM提取
if _vlm_ocr_enable:
results = await predictor.aio_batch_two_step_extract(images=images_pil_list)
hybrid_pipeline_model = None
inline_formula_list = [[] for _ in images_pil_list]
ocr_res_list = [[] for _ in images_pil_list]
else:
batch_ratio = get_batch_ratio(device)
results = await predictor.aio_batch_two_step_extract(
images=images_pil_list,
not_extract_list=not_extract_list
)
inline_formula_list, ocr_res_list, hybrid_pipeline_model = _process_ocr_and_formulas(
images_pil_list,
results,
language,
inline_formula_enable,
_ocr_enable,
batch_radio=batch_ratio,
)
_normalize_bbox(inline_formula_list, ocr_res_list, images_pil_list)
infer_time = round(time.time() - infer_start, 2)
logger.debug(f"infer finished, cost: {infer_time}, speed: {round(len(results)/infer_time, 3)} page/s")
# 生成中间JSON
middle_json = result_to_middle_json(
results,
inline_formula_list,
ocr_res_list,
images_list,
pdf_doc,
image_writer,
_ocr_enable,
_vlm_ocr_enable,
hybrid_pipeline_model,
)
clean_memory(device)
return middle_json, results, _vlm_ocr_enable