A new algorithm to threshold the courtesy amount of Brazilian bank checks
Renata F. P. Neves, C.A.B. Mello, M.S. Silva, Byron Leite Dantas Bezerra · Conference proceedings/Conference proceedings - IEEE International Conference on Systems, Man, and Cybernetics · 2008
This paper describes a new algorithm for thresholding the courtesy amount of Brazilian bank checks. These images have complex backgrounds which is a problem for an automatic recognition system. The new approach is based on Tsallis entropy to find the best threshold value. Histogram specification is also used for preprocessing some images. The bi-level images are analyzed through several quantitative measures and it achieved the best results when compared with the images produced by other classical thresholding algorithms.