遠端偵測人的移動與其動作辨識，包括：

• 前景與背景顏色相近時，前景影像獲取
• 陰影偵測與干擾消除
• 隨前景人體移動或靜止而調整之適應性背景模型建構
• 搭配上述人體動作辨識系統，進行人體追蹤與動作辨識
• 偵測範圍：人體高度 10 pixels 以上

• We can extract the foreground image reliably when the foreground color is similar to the background color.
• We utilize the HSV color space to build the background model.
• It is also helpful to remove shadow.
• The background model is also adaptive to the change of scene containing newly moving or stationary person.
• The module can be integrated into a robust Human Activity Recognition System.