library_name: transformers
license: apache-2.0
pipeline_tag: image-segmentation
DIT-base-layout-detection
We present the model cmarkea/dit-base-layout-detection, which allows extracting different layouts (Text, Picture, Caption, Footnote, etc.) from an image of a document. This is a fine-tuning of the model dit-base on the DocLayNet dataset. This model can jointly predict masks and bounding boxes for documentary objects. It is ideal for processing documentary corpora to be ingested into an ODQA system.
This model allows extracting 11 entities, which are: Caption, Footnote, Formula, List-item, Page-footer, Page-header, Picture, Section-header, Table, Text, and Title.
Performance
In this section, we will assess the model's performance by separately considering semantic segmentation and object detection. We did not perform any post-processing
for the semantic segmentation. As for object detection, we only applied OpenCV's findContours without any further post-processing.
For semantic segmentation, we will use the F1-score to evaluate the classification of each pixel. For object detection, we will assess performance based on the Generalized Intersection over Union (GIoU) and the accuracy of the predicted bounding box class. The evaluation is conducted on 500 pages from the PDF evaluation dataset of DocLayNet.
| Class | f1-score (x100) | GIoU (x100) | accuracy (x100) |
|---|---|---|---|
| Background | 94.98 | NA | NA |
| Caption | 75.54 | 55.61 | 72.62 |
| Footnote | 72.29 | 50.08 | 70.97 |
| Formula | 82.29 | 49.91 | 94.48 |
| List-item | 67.56 | 35.19 | 69 |
| Page-footer | 83.93 | 57.99 | 94.06 |
| Page-header | 62.33 | 65.25 | 79.39 |
| Picture | 78.32 | 58.22 | 92.71 |
| Section-header | 69.55 | 56.64 | 78.29 |
| Table | 83.69 | 63.03 | 90.13 |
| Text | 90.94 | 51.89 | 88.09 |
| Title | 61.19 | 52.64 | 70 |
Benchmark
Now, let's compare the performance of this model with other models.
| Class | f1-score (x100) | GIoU (x100) | accuracy (x100) |
|---|---|---|---|
| cmarkea/dit-base-layout-detection | 90.77 | 56.29 | 85.26 |
| cmarkea/detr-layout-detection | 84.23 | 43.84 | 71.98 |
Direct Use
import torch
from transformers import AutoImageProcessor, AutoModel
img_proc = AutoImageProcessor.from_pretrained(
"cmarkea/dit-base-layout-detection"
)
model = AutoModel.from_pretrained(
"cmarkea/dit-base-layout-detection"
)
with torch.inference_mode():
input_ids = img_proc(img, return_tensors='pt')
segmentation = model(**input_ids)
segmentation_mask = img_proc.post_process_semantic_segmentation(
segmentation,
target_sizes=[img.size[::-1]]
)
Citation
@online{DeDitLay,
AUTHOR = {Cyrile Delestre},
URL = {https://huggingface.co/cmarkea/dit-base-layout-detection},
YEAR = {2024},
KEYWORDS = {Image Processing ; Transformers ; Layout},
}