a method and apparatus for converting polar format radar video data into a horizontal raster format output to a tv monitor . radar video data comprises radar video pixels each having an associated intensity value and a polar coordinate in a raster display . the tv monitor includes a display screen including a plurality of pixels wherein each pixel has a corresponding x , y address . the apparatus and method of the invention comprises steps or apparatus for storing the radar video pixels , translating x , y addresses into corresponding angular and radial coordinates , scanning the storage means using the translated x , y address and interpolating a radar intensity value for the translated x , y address . the radar video pixels are indexed by radial and angular coordinates . the scanning process includes accessing at least four radar video pixels surrounding the translated x , y address . in the preferred embodiment of the invention , the scan conversion of the x , y addresses is accomplished in a seven stage scan converter pipeline .