1. A method for scanning a digital image for detecting the representation of an object, the method comprising: identifying an original digital image; downsampling the original image in a first dimension and in a second dimension to obtain a downsampled image; performing a first scan of the downsampled image to detect the representation of an object within the downsampled image; dividing the original digital image into at least two image blocks, each image block containing a portion of the original digital image and further each image block containing an overlapping portion of at least one of the other image blocks; and performing a second scan of each of the at least two image blocks to detect the representation of the object within each of the at least two image blocks; and determining starting points for the second scan of each of the at least two image blocks such that only a single scan of the overlapping portion is performed.