A colorectal polyp image segmentation method, system, electronic device and medium

By using a colorectal polyp segmentation neural network based on the EfficientNet-B0 and U-Net frameworks, combined with probability distribution images and class activation heatmaps, the contradiction between high accuracy and low latency in existing technologies is resolved, enabling efficient and accurate polyp segmentation on clinical edge devices.

CN122415642APending Publication Date: 2026-07-17INST OF MEDICAL INFORMATION CHINESE ACAD OF MEDICAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF MEDICAL INFORMATION CHINESE ACAD OF MEDICAL SCI
Filing Date
2026-04-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing colorectal polyp segmentation algorithms struggle to simultaneously meet the requirements of high accuracy, low computational complexity, and low latency in real-time clinical deployments. Mainstream models incur high computational overhead and have long inference times, while lightweight models lack sufficient accuracy when handling small polyps or ambiguous boundaries, failing to reach clinically reliable levels.

Method used

A polyp segmentation neural network built using the EfficientNet-B0 encoder and the U-Net framework achieves pixel-level segmentation prediction and interpretable feature extraction through a single forward propagation, generating polyp probability distribution images and class activation heatmaps. This avoids additional gradient backpropagation or secondary network calls. Combined with binarized masks and heatmap outputs, it provides verifiable visual interpretations.

Benefits of technology

With low computational complexity and low latency, high colorectal polyp segmentation accuracy is achieved, meeting the real-time requirements of clinical edge devices and providing interpretable visual aids for diagnosis, thus improving the effective accuracy of the lightweight model.

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Abstract

本申请实施例提供了一种结直肠息肉图像分割方法、系统、电子设备及介质,本方法中,二值化掩码的生成直接基于网络输出的概率分布图像,类激活热力图则复用已计算的中间层特征,进一步的,通过将分割结果与热力图联合输出,在不增加模型参数量和推理复杂度的前提下,提供可验证的视觉解释依据;最后,由于热力图直接来源于用于生成概率分布图像的同一组语义特征,其空间聚焦程度与分割决策相关联,因而能够在极小的额外计算代价下,实现对息肉区域关注度的量化评估,在保证低计算复杂度和低延迟的前提下实现较高的结直肠息肉分割精度。
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