Abstract: The present disclosure provides methods and systems for compressing map data. Provided here is a system for reducing network traffic by compressing map data, comprising: a data set receiver configured to obtain first two or more values associated with first two or more pixels; a prediction difference recorder configured to: (a) predict a next value associated with a next pixel based on the first two or more values, wherein the next pixel is immediately adjacent to one of the first two or more pixels; (b) predict a further next value associated with a further next pixel based on previous two or more values associated with previous two or more pixels, wherein the further next pixel is immediately adjacent to one of the previous two or more pixels; and (c) record an error in the predicted next value and in the predicted further next value; a render engine configured to encode the recorded error into colors.

Abstract: The present disclosure provides methods and systems for providing a real-time viewshed visualization. Provided here is a method for generating viewshed map for one or more client nodes, comprising (a) receiving a first set light source data associated with an area; (b) obtaining a set of elevation data associated with the area; (c) generating a shadow map based at least in part on the first set light source data and the elevation data associated with the area; (d) receiving interactive position data from the one or more client nodes; and (e) generating a real-time viewshed map visualization of the area by rendering the shadow map based on the interactive position data.