Thresholding the courtesy amount of brazilian bank checks using a local methodology

Abstract

This paper presents a new thresholding methodology for complex background images with an application to the courtesy amount of Brazilian bank checks. Courtesy amount images present a complex background and the proposal of an automatic thresholding process brings benefits to other steps in bank check clearance, such as the Optical Character Recognition (OCR). Experimental results showed that the proposed methodology yields good results, with average accuracy over 95%, superior to standard methods from the literature.