Observation System capable of masking privacy zone and method to setting masking zone

摘要

Provided is a surveillance system for masking a privacy zone and a method of setting up a mask zone. The surveillance system comprises a photographing unit (100), a zone setting unit (140), a display unit (120) and an image signal processor (110). The photographing photographs a surveillance zone. The zone setting unit (140) sets up a mask zone that masks a privacy zone at least partly comprised within the surveillance zone. The display unit (120) displays vertices of the mask zone and the process of connecting the vertices according to the mask zone setting. The image signal processor (110) signal processes image signals corresponding to the surveillance zone and mask image signals corresponding to the mask zone. Accordingly, a user can confirm the process of connecting the points of a mask zone, thereby creating a correct mask zone.