A METHOD FOR THE ASSESSMENT OF THE QUALITY AND USABILITY OF DIGITAL CHEQUE IMAGES

摘要

The present invention descries methods of providing compact and efficient localised descriptors of cheque data to build virtual images of cheques. A virtual image is an abstract representation that describes the appearance of a cheque in mathematical terms; it does not necessarily correspond to an actual, real image of a cheque. The descriptors are able, by means of a small number of parameters, to describe both the range of the kinds of features that may occur on the documents in question and also the range in appearance that those features can take, brought about by variation in the printing and scanning processes. The virtual images have smaller amounts of data than the raw rasterised formats i.e. the mathematical abstract representation is more compact than the rasterised format, leading to computational efficiencies.