基于Transformer的胃癌显微高光谱图像分割方法

doi:10.3964/j.issn.1000-0593(2025)02-0551-07

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Abstract Gastric cancer is the third leading cause of cancer-related deaths globally, posing a serious threat to human life and health. Therefore, early identification of gastric cancer lesions is crucial for early diagnosis of gastric cancer. As an emerging technique, microscopic hyperspectral imaging technology can simultaneously obtain rich spectral information and spatial information of biological tissues at the microscopic level, providing a new approach for early pathological slice diagnosis. In this paper, gastric cancer microscopic hyperspectral images in the range of 400~1 000 nm were collected using a microscopic hyperspectral imaging system. The gastric cancer microscopic hyperspectral dataset containing 230 images was constructed through preprocessing, such as spectral calibration. Although spatial attention-based methods have achieved significant results in image classification, segmentation, and other fields, they still face challenges of high computational complexity and insufficient utilization of spectral information when dealing with hyperspectral images. Therefore, this paper proposes a backbone network model based on convolution and attention mechanism called Mixing Dual-Branch Transformer (MDBT). This model achieves spatial and channel feature aggregation between blocks and within blocks by alternately applying spatial and channel mixing modules. Specifically, this paper designs window attention, convolution dual branches, and spatial and channel interaction structures. This design not only reduces computational complexity but also achieves window-to-window information interaction and feature fusion through convolutional interaction, overcoming the limitation of window attention's receptive field and further improving the global modeling ability of the Transformer. In the image segmentation experiments, we adopt the UperNet model as the decode head network to reconstruct the features extracted by the backbone network to obtain the final segmentation results. Five-fold cross-validation experiments were conducted on the collected gastric cancer hyperspectral dataset, and the results show that the average priceand mIoU of this paper's model reach 85.39 and 74.66, respectively, outperforming mainstream image segmentation network models such as UNet, Swin, PVT, and VIT. Meanwhile, ablation experiments are designed to verify the optimization effects of the proposed spatial and channel dual mixing modules, convolution, window attention dual branches, and other structures on experimental results. Experimental results demonstrate that the proposed MDBT model can effectively utilize hyperspectral images' rich spatial and spectral information, improve the accuracy of gastric cancer image segmentation, and prove the research significance and application value of microscopic hyperspectral imaging technology in gastric cancer diagnosis.

Key words：Microscopic hyperspectral; Image segmentation; Deep learning; Transformer

Received: 2024-03-27 Accepted: 2024-07-05

ZTFLH:

TP183/R735.2

Corresponding Authors: PING Jin-liang E-mail: pjl0173@163.com

Cite this article:

ZHANG Ran,JIN Wei,MU Ying, et al. Transformer-Based Method for Segmentation of Gastric Cancer Microscopic Hyperspectral Images[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2025, 45(02): 551-557.

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https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2025)02-0551-07 OR https://www.gpxygpfx.com/EN/Y2025/V45/I02/551

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