US Patent 10282821 Observational data processing and analysis

Processing and analyzing observational data is disclosed. A set of data comprising at least a first tile and second tile is received. A first determination is made, for a first pixel position, which tile has a pixel with the highest value for that first pixel position. A second determination is made, for a second pixel position, which tile has a pixel with the highest value for that second pixel position. A composite image is generated using data obtained from the respective tiles in accordance with the two determinations.