📃📄 Document unwarp

Papers

Paper	Year	Code	Unwarp	Light
DocUNet: Document Image Unwarping via A Stacked U-Net	2018	Pytorch	✅	❌
DewarpNet: Single-Image Document Unwarping With Stacked 3D and 2D Regression Networks	2019	Pytorch	✅	✅
DocProj: Document Rectification and Illumination Correction using a Patch-based CNN ⭐	2019	Pytorch	✅	✅
Rectinet: A Gated and Bifurcated Stacked U-Net Module for Document Image Dewarping	2020	Pytorch	✅	❌
RectiNet-v2: A stacked network architecture for document image dewarping	2021		✅	❌
DocTr: Document Image Transformer for Geometric Unwarping and Illumination Correction ⭐⭐	Oct 2021	Coming soon	✅	✅

Unwarp:

• Problem formulation:
  • Input: RGB image (img of 3 channels)
  • Output: Flow displacement on the x and y axis (img of 2 channels)
    • The pixel-level 2D displacement vector field between the distorted image and the corresponding corrected image.
    • Regression per pixel

Dataset

• https://www.kaggle.com/c/denoising-dirty-documents/data

Other links

• https://stackoverflow.com/questions/62492457/what-could-be-the-solution-for-automatically-document-image-unwarping-caused-by
• https://github.com/thomasjhuang/deep-learning-for-document-dewarping
• https://expressexpense.com/blog/free-receipt-images-ocr-machine-learning-dataset/
• https://way2vat.com/receipt-data-augmentation-using-virtual-people-for-real-image-analysis/
• http://kth.diva-portal.org/smash/get/diva2:1463587/FULLTEXT01.pdf