| 摘要 |
<p>A method of identifying objects of interest within a scene from an image thereof, the method comprising the steps of; taking a current image of the scene I now using an imager; calculating a difference image I diff between the current image of the scene I now and a reference image I ref , the difference image I diff comprising a plurality of image pixels each having an intensity level; determining an optimum noise level in the difference image I diff and setting a noise threshold T n above said optimum noise level; and comparing the magnitude of the intensity level of each pixel within the difference image I diff with the noise level T n and providing a binary mask image I mask which labels continuous areas of pixels (blobs) in the image as either object or background.</p> |
