Cross-domain semantic segmentation method based on multi-element knowledge distillation

By constructing a joint optimization framework that guides the student network through a teacher network, and utilizing feature enhancement modules and multi-level distillation strategies, the problem of performance degradation in high-definition domain testing during cross-domain semantic segmentation was solved, achieving efficient cross-domain knowledge transfer and accurate segmentation of high-definition images.

CN122416033APending Publication Date: 2026-07-17TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies in cross-domain semantic segmentation suffer from problems such as decreased segmentation performance in high-definition domain testing and poor segmentation of edge regions and small targets. Traditional methods cannot effectively utilize the knowledge trained on compressed images for high-definition domain transfer, and methods based on super-resolution preprocessing and adversarial learning have problems with high computational overhead and stability.

Method used

A joint optimization framework is constructed to guide the student network through a teacher network. By combining feature enhancement modules, feature distillation, logits distillation, and structural distillation with a curriculum-based compressed training strategy and a quality-aware adaptive distillation strategy, multi-level knowledge transfer is achieved, thereby improving the semantic segmentation accuracy and generalization ability of the student model on high-definition images.

Benefits of technology

It effectively improves the semantic segmentation accuracy and boundary quality of the model on high-definition raw images, reduces the dependence on high-definition labeled data, alleviates cross-domain distribution shift, and enhances the model's adaptability and segmentation performance.

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Abstract

本发明提出一种基于多元知识蒸馏的跨域语义分割方法,属于计算机视觉及图像处理领域,首选构建教师模型和与教师模型结构相似的学生模型;将混合数据集输入冻结的教师模型和待训练的学生模型,教师模型输出其深层特征和logits,学生模型则通过骨干网络和特征增强模块生成增强后的特征,并解码得到logits;采用课程式和质量感知彼此耦合的联合训练机制,从而形成“课程推进—质量感知—蒸馏增强”相互作用的闭环训练过程。训练完成后,在推理阶段仅保留学生模型,将待分割的原始高清图像输入训练好的学生模型,输出最终语义分割结果。通过上述方法,能够有效提高模型在高清原始图像上的语义分割精度、边界质量和泛化能力。
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