Glossary for Geospatial Science

aspect ratio:  The ratio of horizontal scale to vertical scale for printing or display.  For graphics and image processing, square cells/pixels are best (aspect 1:1).  Some display devices have a non-square aspect, which causes images to appear stretched or distorted.  Standard broadcast video has an aspect ratio of 4:3, which must be corrected in any framegrabbing or other digitization process.