resampling

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 ARC/INFO, the GRID function RESAMPLE supports resampling of raster data using Cubic Convolution, Bilinear Interpolation, Nearest Neighbor Assignment, and custom "Nearest Data" assignment methods.

1. In television technology, the process of converting image information from one format (standard) to another. Note: The conversion may, for example, affect (involve) the frame rate, the number of lines per frame, the analog resolution per scanning line, or (in digital systems) the number of pixels per scanning line. 2. In video post-production, the process of changing the image size (e.g., by cropping, zooming, or distorting the image geometrically). Note: The altered video signal is sampled and the samples are then processed by a suitable algorithm and a new set of samples is generated that is compatible with the specifications of the target system. [After SMPTE]