手法を比較

	弱教師あり拡散モデル	弱教師あり意味セグメンテーション
分野	深層学習	深層学習
系統	Machine learning	Machine learning
提唱年	2022–2024	2014–2016
提唱者	Ho et al. (DDPM foundation); weak supervision integration by multiple groups, 2022–2024	Multiple contributors; Class Activation Mapping (Zhou et al., 2016) is foundational
種類	Generative model with imperfect supervision	Pixel-level classification with image-level or coarse supervision
原典	Ho, J., Jain, A., & Abbeel, P. (2020). Denoising Diffusion Probabilistic Models. Advances in Neural Information Processing Systems (NeurIPS), 33, 6840–6851.	Zhou, B., Khosla, A., Lapedriza, A., Oliva, A., & Torralba, A. (2016). Learning Deep Features for Discriminative Localization. In Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pp. 2921–2929.
別名	WS-Diffusion, weakly supervised DDPM, label-efficient diffusion model, noisy-label diffusion training	WSSS, weak-label segmentation, image-level supervised segmentation, weakly-labeled pixel classification
関連	6	4
概要	A weakly supervised diffusion model trains or conditions a denoising diffusion probabilistic model using coarse, noisy, or incomplete supervision signals — such as image-level class labels, bounding boxes, or crowd-sourced annotations — instead of pixel-precise ground truth. This allows high-quality generative and discriminative outputs in annotation-scarce settings where full labeling is infeasible or prohibitively expensive.	Weakly Supervised Semantic Segmentation (WSSS) trains pixel-level scene parsers using only cheap, coarse annotations — typically image-level class tags — instead of costly dense pixel masks. By generating proxy pseudo-labels from a classification network (via Class Activation Maps or similar localisation cues) and iteratively refining them, WSSS brings full-supervision accuracy within reach at a fraction of the annotation cost.