主要是做文档类图像的版面分析。具体来说,就是分析给定的文档类别图像(论文截图、研报等),定位其中类别和位置,如标题、段落、表格和图片等各个部分。
目前支持以下场景的版面分析:
model_type |
版面类型 | 模型名称 | 支持类别 |
---|---|---|---|
pp_layout_table |
表格 | layout_table.onnx |
["table"] |
pp_layout_publaynet |
英文 | layout_publaynet.onnx |
["text", "title", "list", "table", "figure"] |
pp_layout_cdla |
中文 | layout_cdla.onnx |
['text', 'title', 'figure', 'figure_caption', 'table', 'table_caption', 'header', 'footer', 'reference', 'equation'] |
yolov8n_layout_paper |
论文 | yolov8n_layout_paper.onnx |
['Text', 'Title', 'Header', 'Footer', 'Figure', 'Table', 'Toc', 'Figure caption', 'Table caption'] |
yolov8n_layout_report |
研报 | yolov8n_layout_report.onnx |
['Text', 'Title', 'Header', 'Footer', 'Figure', 'Table', 'Toc', 'Figure caption', 'Table caption'] |
yolov8n_layout_publaynet |
英文 | yolov8n_layout_publaynet.onnx |
["Text", "Title", "List", "Table", "Figure"] |
yolov8n_layout_general6 |
通用 | yolov8n_layout_general6.onnx |
["Text", "Title", "Figure", "Table", "Caption", "Equation"] |
PP模型来源:PaddleOCR 版面分析
yolov8n系列来源:360LayoutAnalysis
模型下载地址为:link
由于模型较小,预先将中文版面分析模型(layout_cdla.onnx
)打包进了whl包内,如果做中文版面分析,可直接安装使用
$ pip install rapid-layout
import cv2
from rapid_layout import RapidLayout, VisLayout
# model_type类型参见上表。指定不同model_type时,会自动下载相应模型到安装目录下的。
layout_engine = RapidLayout(conf_thres=0.5, model_type="pp_layout_cdla")
img = cv2.imread('test_images/layout.png')
boxes, scores, class_names, elapse = layout_engine(img)
ploted_img = VisLayout.draw_detections(img, boxes, scores, class_names)
if ploted_img is not None:
cv2.imwrite("layout_res.png", ploted_img)
$ rapid_layout -h
usage: rapid_layout [-h] -img IMG_PATH
[-m {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}]
[--conf_thres {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}]
[--iou_thres {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}]
[--use_cuda] [--use_dml] [-v]
options:
-h, --help show this help message and exit
-img IMG_PATH, --img_path IMG_PATH
Path to image for layout.
-m {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}, --model_type {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}
Support model type
--conf_thres {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}
Box threshold, the range is [0, 1]
--iou_thres {pp_layout_cdla,pp_layout_publaynet,pp_layout_table,yolov8n_layout_paper,yolov8n_layout_report,yolov8n_layout_publaynet,yolov8n_layout_general6}
IoU threshold, the range is [0, 1]
--use_cuda Whether to use cuda.
--use_dml Whether to use DirectML, which only works in Windows10+.
-v, --vis Wheter to visualize the layout results.
- 示例:
$ rapid_layout -v -img test_images/layout.png
- 因为版面分析模型输入图像尺寸固定,故可使用
onnxruntime-gpu
来提速。 - 因为
rapid_layout
库默认依赖是CPU版onnxruntime
,如果想要使用GPU推理,需要手动安装onnxruntime-gpu
。 - 详细使用和评测可参见AI Studio
pip install rapid_layout
pip uninstall onnxruntime
# 这里一定要确定onnxruntime-gpu与GPU对应
# 可参见https://onnxruntime.ai/docs/execution-providers/CUDA-ExecutionProvider.html#requirements
pip install onnxruntime-gpu
import cv2
from rapid_layout import RapidLayout
from pathlib import Path
# 注意:这里需要使用use_cuda指定参数
layout_engine = RapidLayout(conf_thres=0.5, model_type="pp_layout_cdla", use_cuda=True)
# warm up
layout_engine("images/12027_5.png")
elapses = []
img_list = list(Path('images').iterdir())
for img_path in img_list:
boxes, scores, class_names, elapse = layout_engine(img_path)
print(f"{img_path}: {elapse}s")
elapses.append(elapse)
avg_elapse = sum(elapses) / len(elapses)
print(f'avg elapse: {avg_elapse:.4f}')