The process of reducing image data set size by representing a group of pixels with a single pixel. Thus, pixel count is lowered, individual pixel size is increased, and overall image geographic extent is retained. Resampled images are “coarse” and have less information than the images from which they are taken. Conversely, this process can also be executed in the reverse. In ArcInfo, the GRID function RESAMPLE supports resampling of raster data using Cubic Convolution, Bilinear Interpolation, Nearest Neighbor Assignment, and custom “Nearest Data” assignment methods