1. A method performed by a processor associated with one or more cameras, the method comprising: locating, using the processor, an image portion that represents a human body part in an image representing a portion of a page of a document; expanding, using the processor, the located image portion that represents a human body part to include additional image portions representing the human body part; determining, using the processor, whether the expanded image portion is in a particular portion of the image; and issuing, using the processor, a signal to re-scan the page when the located image portion that represents a human body part is determined to be in a particular portion of the image.