In this paper, we introduce a novel end-end framework for multi-oriented
scene text detection from an instance-aware semantic segmentation perspective.
We present Fused Text Segmentation Networks, which combine multi-level features
during the feature extracting as text instance may rely on finer feature
expression compared to general objects. It detects and segments the text
instance jointly and simultaneously, leveraging merits from both semantic
segmentation task and region proposal based object detection task. Not
involving any extra pipelines, our approach surpasses the current state of the
art on multi-oriented scene text detection benchmarks: ICDAR2015 Incidental
Scene Text and MSRA-TD500 reaching Hmean 84.1% and 82.0% respectively. Morever,
we report a baseline on total-text containing curved text which suggests
effectiveness of the proposed approach.

本文提出了一种新的多方位场景文本检测的模型，将多级特征融合到特征提取中，将文本实例一起检测和分割，该方法有效地结合了语义分割和基于区域提议的目标检测任务，实现了在多方位场景文本检测基准测试 ICDAR2015 Incidental Scene Text 和 MSRA-TD500 上的超越，达到了分别 84.1% 和 82.0% 的 Hmean 值。

用于多方向场景文本检测的融合文本分割网络

Fused Text Segmentation Networks for Multi-oriented Scene Text Detection

In this paper, we first provide a new perspective to divide existing high
performance object detection methods into direct and indirect regressions.
Direct regression performs boundary regression by predicting the offsets from a
given point, while indirect regression predicts the offsets from some bounding
box proposals. Then we analyze the drawbacks of the indirect regression, which
the recent state-of-the-art detection structures like Faster-RCNN and SSD
follows, for multi-oriented scene text detection, and point out the potential
superiority of direct regression. To verify this point of view, we propose a
deep direct regression based method for multi-oriented scene text detection.
Our detection framework is simple and effective with a fully convolutional
network and one-step post processing. The fully convolutional network is
optimized in an end-to-end way and has bi-task outputs where one is pixel-wise
classification between text and non-text, and the other is direct regression to
determine the vertex coordinates of quadrilateral text boundaries. The proposed
method is particularly beneficial for localizing incidental scene texts. On the
ICDAR2015 Incidental Scene Text benchmark, our method achieves the F1-measure
of 81%, which is a new state-of-the-art and significantly outperforms previous
approaches. On other standard datasets with focused scene texts, our method
also reaches the state-of-the-art performance.

研究通过直接回归预测物体边界偏移量，提高了多方向场景文本检测的效率，并且通过全卷积网络和单步后处理实现了高性能的检测框架。在 ICDAR2015 测序中，本文方法的 F1 得分为 81％，在其他标准数据集中也达到了最先进的性能。