The invention relates to histology analyses, and in particular, to the assessment of pathological tissues to aid in the diagnosis of disease characterized by specific pathologies, for example cancer. Handwritten input is received in training mode and run through several base recognizers to generate several alternate lists. The computer program further includes logic configured to verify that the rows of the initial structure are linearly independent and logic configured to apply an orthonormalization procedure to the initial structure to obtain a space-time structure. The PPAN matching process is able to perform query and match at the same time to accelerate the PPAN matching process, and also enables complex services to be represented by generic structured documents. When a control method is changed beforeafter the registration sensor in this manner, the speeding-up and noise reduction of the sheet feed operation are realized.