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arXiv 2001.09021cs.CV
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稠密残差网络:增强字符识别的全局稠密特征流

Dense Residual Network: Enhancing Global Dense Feature Flow for Character Recognition

Hefei University of Technology(合肥工业大学);Soochow University(苏州大学);Harbin Institute of Technology (Shenzhen)(哈尔滨工业大学(深圳));South China Normal University(华南师范大学);University of Science and Technology of China(中国科学技术大学)

Zhao Zhang, Zemin Tang, Yang Wang, Zheng Zhang, Choujun Zhan, Zhengjun Zha, Meng Wang

摘要:

深度卷积神经网络(CNN),如密集卷积网络(DenseNet),通过发现深层层次信息,在图像表示方面取得了巨大成功。然而,大多数现有的网络只是简单地堆叠卷积层,因此无法完全发现层之间的局部和全局特征信息。本文主要探讨如何充分利用所有卷积层的分层特征来增强局部和全局密集特征流。从技术上讲,我们提出了一个高效的CNN框架,即,快速密集残差网络(FDRN),用于文本识别。为了构造FDRN,我们提出了一种新的快速残差稠密块(f-RDB),它保留了原RDB的局部特征融合和局部残差学习能力,同时减少了计算量。在充分学习局部稠密残差特征后,利用求和运算和多个f-RDB定义一个新的块,称为全局稠密块(global dense block,GDB),通过模仿稠密块的构造,以整体的方式自适应地学习全局稠密残差特征。最后,我们使用两个卷积层来构造下采样块,以减少全局特征大小并提取更深的特征。大量的仿真实验表明,与其他相关模型相比,FDRN获得了更好的识别效果。

英文摘要:

Deep Convolutional Neural Networks (CNNs), such as Dense Convolutional Networks (DenseNet), have achieved great success for image representation by discovering deep hierarchical information. However, most existing networks simply stacks the convolutional layers and hence failing to fully discover local and global feature information among layers. In this paper, we mainly explore how to enhance the local and global dense feature flow by exploiting hierarchical features fully from all the convolution layers. Technically, we propose an efficient and effective CNN framework, i.e., Fast Dense Residual Network (FDRN), for text recognition. To construct FDRN, we propose a new fast residual dense block (f-RDB) to retain the ability of local feature fusion and local residual learning of original RDB, which can reduce the computing efforts at the same time. After fully learning local residual dense features, we utilize the sum operation and several f-RDBs to define a new block termed global dense block (GDB) by imitating the construction of dense blocks to learn global dense residual features adaptively in a holistic way. Finally, we use two convolution layers to construct a down-sampling block to reduce the global feature size and extract deeper features. Extensive simulations show that FDRN obtains the enhanced recognition results, compared with other related models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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