DATA REPRESENTATION AND ACCESS METHOD

摘要

A method of representing and accessing an array of data is disclosed. Preferably, the array of data is an image. This involves determining a series of subsamples (21 to 28) of the array in which the subsamples (21 to 28) are of increasing granularity. The collection of the series of subsamples (21 to 28) substantially covers the whole of the data array. The series of subsamples (21 to 28) are then stored in order of granularity from coarsest to finest granularity. Thus, in reading out the stored data, only the corresponding subsamples (21 to 28) need be read out.