A multiresolution approach to computer verification of handwritten signatures
Yingyong Qi, B.R. Hunt · IEEE Transactions on Image Processing · 1995
We took a multi-resolution approach to the signature verification problem. The top-level representation of signatures was the global geometric features. A multi-resolution representation of signatures was obtained using the wavelet transformation. We built VQ and network classifiers to demonstrate the advantages of the multi-resolution approach. High verification rates were achieved based on a limited database.