1. A computational approach to edge detection;Canny;IEEE Trans. Pattern Anal. Machine Intell.,1986
2. Davis, G.W., Brandt, J.R., 1999. Compensation for scan line variation in a bar code scanner system. US Patent 09/394, 339.
3. The Viterbi algorithm;Fornay;Proc. IEEE,1973
4. Wavelet transform and edge detection;Grossmann,1986
5. Deblurring of bilevel waveforms;Joseph;IEEE Trans. Image Process.,1993