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	背景差分	分水嶺セグメンテーション
分野	コンピュータビジョン	コンピュータビジョン
系統	Machine learning	Machine learning
提唱年	1999	1979
提唱者	Stauffer and Grimson	Serge Beucher and Christian Lantuéjoul
種類	Temporal image analysis	Morphological image segmentation
原典	Stauffer, C., & Grimson, W. E. L. (1999). Adaptive background mixture models for real-time tracking. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 246–252.	Meyer, F. (1994). Topographic distance and watershed lines. Signal Processing, 38(1), 113–125.
別名	Foreground detection, Video segmentation	Watershed transform, Water shedding segmentation
関連	5	5
概要	Background subtraction is a video processing technique that separates moving foreground objects from a static or slowly changing background by comparing each frame to a learned or estimated background model. Widely used in video surveillance and motion detection, background subtraction enables robust foreground detection even in complex scenes with illumination changes.	Watershed segmentation is a morphological image processing technique that automatically segments an image into distinct regions by treating image intensity as a topographic landscape where each object corresponds to a valley. Introduced by Beucher and Lantuéjoul in 1979 and refined by Meyer, the watershed algorithm is particularly effective for separating touching or overlapping objects.