棱锥(几何)
计算机科学
人工智能
分割
背景(考古学)
特征(语言学)
图像分割
卷积神经网络
模式识别(心理学)
特征提取
计算机视觉
图层(电子)
深度学习
数学
生物
几何学
哲学
古生物学
语言学
有机化学
化学
作者
Guanghui Yue,Siying Li,Runmin Cong,Tianwei Zhou,Baiying Lei,Tianfu Wang
出处
期刊:IEEE Transactions on Instrumentation and Measurement
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:72: 1-13
被引量:10
标识
DOI:10.1109/tim.2023.3244219
摘要
Recently, deep convolutional neural networks (C-NNs) have provided us an effective tool for automated polyp segmentation in colonoscopy images. However, most CNN-based methods do not fully consider the feature interaction among different layers and often cannot provide satisfactory segmentation performance. In this paper, a novel attention-guided pyramid context network (APCNet) is proposed for accurate and robust polyp segmentation in colonoscopy images. Specifically, considering that different network layers represent the polyp in different aspects, APCNet first extracts multi-layer features in a pyramid structure, then utilizes an attention-guided multi-layer aggregation strategy to refine the context features of each layer by utilizing the complementary information of different layers. To obtain abundant context features, APCNet employs a context extraction module that explores the context information of each layer via local information retainment and global information compaction. Through the top-down deep supervision, our APCNet implements a coarse-to-fine polyp segmentation and finally localizes the polyp region precisely. Extensive experiments on two in-domain and four out-of-domain experiments show that APCNet is comparable to 19 state-of-the-art methods. Moreover, it holds a more appropriate trade-off between effectiveness and computational complexity than these competing methods.
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