# Arbitrary-Oriented Scene Text Detection via Rotation Proposals

## TL;DR

This paper presents a rotation-based framework for detecting arbitrarily oriented text in natural scene images, utilizing rotation region proposals and a specialized pooling layer for improved accuracy and efficiency.

## Contribution

Introduction of Rotation Region Proposal Networks and a Rotation RRoI pooling layer for more accurate and efficient arbitrary-oriented scene text detection.

## Key findings

- Outperforms previous methods in accuracy and speed
- Effective in detecting various text orientations in real-world images
- Framework is computationally efficient and robust

## Abstract

This paper introduces a novel rotation-based framework for arbitrary-oriented text detection in natural scene images. We present the Rotation Region Proposal Networks (RRPN), which are designed to generate inclined proposals with text orientation angle information. The angle information is then adapted for bounding box regression to make the proposals more accurately fit into the text region in terms of the orientation. The Rotation Region-of-Interest (RRoI) pooling layer is proposed to project arbitrary-oriented proposals to a feature map for a text region classifier. The whole framework is built upon a region-proposal-based architecture, which ensures the computational efficiency of the arbitrary-oriented text detection compared with previous text detection systems. We conduct experiments using the rotation-based framework on three real-world scene text detection datasets and demonstrate its superiority in terms of effectiveness and efficiency over previous approaches.