Attentional decoder networks for chest X-ray image recognition on high-resolution features.

Journal: Computer methods and programs in biomedicine
Published Date:

Abstract

BACKGROUND AND OBJECTIVE: This paper introduces an encoder-decoder-based attentional decoder network to recognize small-size lesions in chest X-ray images. In the encoder-only network, small-size lesions disappear during the down-sampling steps or are indistinguishable in the low-resolution feature maps. To address these issues, the proposed network processes images in the encoder-decoder architecture similar to U-Net families and classifies lesions by globally pooling high-resolution feature maps. However, two challenging obstacles prohibit U-Net families from being extended to classification: (1) the up-sampling procedure consumes considerable resources, and (2) there needs to be an effective pooling approach for the high-resolution feature maps.

Authors

  • Hankyul Kang
    Department of Artificial Intelligence, Ajou University, Suwon, Republic of Korea.
  • Namkug Kim
    Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
  • Jongbin Ryu
    Department of Computer Engineering, Ajou University, Republic of Korea; Department of Artificial Intelligence, Ajou University, Republic of Korea. Electronic address: jongbinryu@ajou.ac.kr.