Extraction of Moving Objects Using Frame Differencing, Ghost and Shadow Removal

This paper proposes a technique for extracting moving object based on temporal differencing, ghost removal and shadow removal using NCC, while using a non-static Pan-Tilt-Zoom (PTZ) camera. To detect moving object in current image, the previous frame, ft-1, is compensated with respect to the current image. The subtraction of pixel intensity is done between the two aligned images. The used of temporal differencing resulting an appearance of 'ghost'. This paper proposes a technique to remove it by using the other previous image, ft-2. The resultant output is then cleaned up using morphological opening operator, before shadow removal is done. Each pre-defined foreground pixels are verified whether it is shadow pixel or foreground pixel. The results show the moving objects are extracted without shadow or other noises.

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