DIGITAL MAP SHAPE VECTOR ENCODING METHOD AND POSITION INFORMATION TRANSFER METHOD

摘要

Digital map position information is encoded with a small data amount by utilizing the compression encoding technique.In a method for encoding data representing a shape vector on a digital map,a node string representing the shape vector and position information representing a shape are subjected to arithmetic processing so as to be represented in statistically deflected data and the statistically deflected data is encoded to reduce the data amount.Thus,it is possible to significantly reduce the transfer data amount when transferring a vector shape of a digital map.