使用 OpenCV 實現零延遲動作追蹤
Zero-Latency Motion Tracking with OpenCV
作者以純 Python 和 OpenCV 開發即時動作追蹤流程，逐格擷取畫面並計算絕對差異。差異經模糊處理以減少雜訊，輪廓面積門檻設為 9200 pixels，用來辨認有效移動；整個流程不使用 API 呼叫。
Heavy machine learning models don't work everywhere, especially not on the edge where computing power is not as good. I have recently developed a simple and fast working procedure to achieve motion tracking in real time with raw Python and OpenCV.
The steps would involve grabbing frame by frame and calculating the absolute difference which is then blurred to reduce noise. The limitation is to set the contour area threshold to 9200 pixels which allows the software output spot the legitimate movement.
No API calls used. No excess work done. Only pure and fast execution.
Back to the code.
來源：DEV Community · dev.to