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ICIP 2022: Adaptive Radial Projection on Fourier Magnitude Spectrum for Document Image Skew Estimation
https://github.com/phamquiluan/jdeskew

deskew document-image-skew-correction skew-correction text-skew-estimation

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ICIP 2022: Adaptive Radial Projection on Fourier Magnitude Spectrum for Document Image Skew Estimation

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# Document Image Skew Estimation

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**Table of Contents**

- [Document Image Skew Estimation](#document-image-skew-estimation)
- [Installation](#installation)
- [pip](#pip)
- [How-to-use](#how-to-use)
- [using python](#using-python)
- [Docker](#docker)
- [using cog](#using-cog)
- [Download Paper](#download-paper)
- [Performance Comparison on DISE 2021](#performance-comparison-on-dise-2021)
- [DISE 2021 Dataset](#dise-2021-dataset)
- [Reproducibility and Evaluation Code](#reproducibility-and-evaluation-code)
- [Citation](#citation)

Table of contents generated with markdown-toc

## Installation

### pip

```bash
pip install jdeskew
```

## How-to-use

### using python

```python
from jdeskew.estimator import get_angle
angle = get_angle(image)

from jdeskew.utility import rotate
output_image = rotate(image, angle)
```

### Docker

https://hub.docker.com/r/phamquiluan/jdeskew/tags

```bash
# build
DOCKER_BUILDKIT=1 docker build -t jdeskew .

# run
docker run -p 8000:80 jdeskew

# test
curl -v -F [email protected] localhost:8000/predict
```

### using cog

https://github.com/replicate/cog

```bash
cog build --debug
cog predict -i [email protected]

# Output:
# Running prediction...
# {
# "angle": -0.12520868113522532
# }
```

## Download Paper

Link1: https://ieeexplore.ieee.org/document/9897910

Link2: https://www.researchgate.net/publication/364320913_ADAPTIVE_RADIAL_PROJECTION_ON_FOURIER_MAGNITUDE_SPECTRUM_FOR_DOCUMENT_IMAGE_SKEW_ESTIMATION

## Performance Comparison on DISE 2021

CE: Correct Estimation rate

WE: Worst Error

| | AED | TOP80 | CE | WE |
| :------------------: | :------: | :------: | :------: | :------: |
| FredsDeskew | 10.82 | 0.09 | 0.54 | 109 |
| PypiDeskew | 16.59 | 0.24 | 0.2 | 141 |
| Koo, Hyung Il et al. | 0.22 | 0.09 | 0.48 | 9.43 |
| CMC-MSU | 0.27 | 0.11 | 0.43 | 23.2 |
| LRDE-EPITA-a | 0.14 | 0.06 | 0.66 | 10.61 |
| | | | | |
| Our (1024) | 0.11 | 0.07 | 0.67 | **1.13** |
| Our (1500) | 0.09 | 0.05 | 0.78 | **1.13** |
| Our (2048) | 0.08 | **0.04** | 0.84 | **1.13** |
| Our (3072) | **0.07** | **0.04** | **0.86** | **1.13** |
| Our (4096) | 0.08 | **0.04** | 0.83 | 1.18 |

## DISE 2021 Dataset

This datasets are built upon three other datasets: DISEC 2013, RVL-CDIP, RDCL 2017. So I urge you to respect their LICENSE.

| Dataset Name | URL |
| --------------------- | ---------------------------------------------------------------------------------- |
| DISE 2021 (45 degree) | https://drive.google.com/file/d/1a-a6aOqdsghjeHGLnCLsDs7NoJIus-Pw/view?usp=sharing |
| DISE 2021 (15 degree) | https://drive.google.com/file/d/1BLiuu-j28dbuPFi4n3C0KuV6vXGmB0qS/view?usp=sharing |

Can also download from Zenodo: https://zenodo.org/records/12570649

## Reproducibility and Evaluation Code

Check the [reproduce.ipynb](reproduce.ipynb) file

## Citation

L. Pham, H. Hoang, X.T. Mai, T. A. Tran, "Adaptive Radial Projection on Fourier Magnitude Spectrum for Document Image Skew Estimation", ICIP, 2022.

```latex
@inproceedings{pham2021dise,
title={Adaptive Radial Projection on Fourier Magnitude Spectrum for Document Image Skew Estimation},
author={Luan Pham, Hao Hoang, Toan Mai, and Tuan Anh Tran},
booktitle={2022 29th International Conference on Image Processing (ICIP)},
year={2022},
organization={IEEE}
}
```

## Star History

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