Patent ID: 6078683
Filing Date: 2000-06-20
Classification: G06K,G07D

Abstract:
A method of detecting the denomination of a currency note transported along a path of travel, the method comprising:receiving position and skew data detected by external sensors for sensing the position and skew of the note;assembling a first data image of pixel data representing a two-dimensional image of substantially all of the note while averaging the pixel data in groups for further processing;adjusting the first data image to account for anomalies in the pixel data in said first data image;correcting the first data image based on the skew data to eliminate skew; andrelating the first data image to a plurality of pre-defined data images according to a mathematical function to determine whether the first data image can be classified as matching any one of the pre-defined plurality of data images corresponding to a specific currency denominations;wherein the adjusting step includes testing each pixel to detect absence of note material, and when an absence of note material is detected, the pixel data is set to a neutral value to identify the absence of note material in order to facilitate comparison of the first data image to each of the plurality of pre-defined data images to determine the specific currency denomination.