METHOD FOR CHECKING SEAL IMPRESSION

摘要

PURPOSE:To improve the accuracy for discriminating the true of one's seal impression from the false by discriminating the factor of positional shear between respective specific points by the size of the calculated data value between the specific points. CONSTITUTION:The allowable value between specific points is previously and experimentally found, the calculated data between a pair of specific points is compared with the allowable value and the ratio of data exceeding the allowable value to the number of whole data is calculated to discriminate the true of one's seal impression from the false on the basis of the calculated result. Therefore the positional shear between the specific points due to stained seal-ink can be discriminated as data and effective data are selected by removing said data, so that the accuracy for discriminating the true of the seal impression from the false can be improved.