SURVEILLANCE SYSTEM AND SURVEILLING METHOD

摘要

A surveillance system includes two cameras and a processing unit. The two cameras capture a scene to obtain a low resolution image and a high resolution image. The processing unit checks the low resolution image to find a reference image in the low resolution image to determine coordinates of the reference image in the low resolution image. The processing unit further determines coordinates of the reference image in the high resolution image to select a portion in the second image correspondingly. The processing unit crops and resizes an image size of the selected reference image according to a ratio of an image size between the low resolution image and the high resolution image, and replaces the reference image in the low resolution image with the cropped and resized reference image to obtain a new image. The new image is for being identified.