1. A method for identifying objects in an electronic image, comprising the steps of: using a camera for providing an electronic source image generated with an array of pixels; using a processor for: electronically processing the electronic source image to identify edge pixels that make up edge segments of the electronic source image; providing an electronic representation of the edge pixels that make up corresponding edge segments of the electronic source image; and processing the electronic representation of the edge pixels to identify valid edge center pixels in at least one row and provide an electronic representation of the valid edge center pixels, wherein each valid edge center pixel is the approximate horizontal center of a horizontal edge segment of essentially contiguous edge pixels having a target width.