Few-shot semantic segmentation (FSS) offers immense potential in the field of medical image analysis, enabling accurate object segmentation with limited training data. However, existing FSS techniques heavily rely on annotated semantic classes, rendering them unsuitable for medical images due to the scarcity of annotations. To address this challenge, multiple contributions are proposed: First, inspired by spectral decomposition methods, the problem of image decomposition is reframed as a graph partitioning task. The eigenvectors of the Laplacian matrix, derived from the feature affinity matrix of self-supervised networks, are analyzed to estimate the distribution of the objects of interest from the support images. Secondly, we propose a novel self-supervised FSS framework that does not rely on any annotation. Instead, it adaptively estimates the query mask by leveraging the eigenvectors obtained from the support images. This approach eliminates the need for manual annotation, making it particularly suitable for medical images with limited annotated data. Thirdly, to further enhance the decoding of the query image based on the information provided by the support image, we introduce a multi-scale large kernel attention module. By selectively emphasizing relevant features and details, this module improves the segmentation process and contributes to better object delineation. Evaluations on both natural and medical image datasets demonstrate the efficiency and effectiveness of our method. Moreover, the proposed approach is characterized by its generality and model-agnostic nature, allowing for seamless integration with various deep architectures. The code is publicly available at \href{https://github.com/mindflow-institue/annotation_free_fewshot}{\textcolor{magenta}{GitHub}}.

借鉴谱分解方法，将图像分解问题视为图划分任务，并通过特征亲和力矩阵的拉普拉斯矩阵的特征向量分析来估计感兴趣对象的分布；提出一种新颖的自监督式FSS框架，不依赖于任何标注，并通过利用从支持图像获得的特征向量自适应地估计查询掩码，从而消除了手动注释的需求，特别适用于具有有限标注数据的医学图像；引入了多尺度大卷积核注意力模块，进一步提高了对支持图像提供的信息进行查询图像解码的能力，通过选择性地强调相关特征和细节，改善了分割过程并有助于更好的物体勾边；在自然和医学图像数据集上的评估结果展示了我们方法的高效性和有效性。

自监督少样本语义分割：一种无需标注的方法