1. A vision system for determining saddle point-like structures in an image comprising: a vision system camera assembly configured to acquire the image of an object within a field of view; a vision system processor comprising an anti-correlation process constructed and arranged to operate on a plurality of neighborhoods of pixels within the image and identify saddle point candidates within the neighborhoods, wherein the anti-correlation process is constructed and arranged to apply to each of the neighborhoods a 90-degree rotated kernel of each of the neighborhoods, respectively, the vision system processor being further constructed and arranged to sample at least one of the identified saddle point candidates to verify ID information and to generate a binary and clipped image of the ID information based upon at least one of the identified saddle point candidates.