Grayscale barcode reading apparatus system including translating device for translating a pattern image into a sequence of bar widths and transition directions

摘要

A system for verifying an object of interest, includes a grayscale one-dimensional bar pattern coupled to the object, an illumination and imaging system using a one-dimensional imaging device for reading the pattern coupled to the object and for producing a pattern image, a device for translating the pattern image into a sequence of bar widths and transition directions representing a detected code, a device for comparing the detected code with a predetermined code, and a device for indicating one of the detected code and acceptance or rejection of the detected code based on comparison of the detected code with the predetermined code.