| 摘要 |
PCT No. PCT/SE82/00365 Sec. 371 Date Jun. 16, 1983 Sec. 102(e) Date Jun. 16, 1983 PCT Filed Nov. 2, 1983 PCT Pub. No. WO83/01718 PCT Pub. Date May 11, 1983.A method and a device for correcting distortion in an image recorded electronically and built up of picture elements along lines. The distortion arises due to the fact that in a field of view scanned along curved lines (31, 33, 35), the picture elements situated vertically below each other when represented on parallel straight lines are displaced horizontally relatively to each other. The picture elements obtained by scanning the field of view are stored in a memory (10) and fed out to a video screen (20). The picture elements on the representation line associated with the shortest scanning line are fed out unchanged while on lines corresponding to longer scanning lines additional picture elements are inserted at definite distance from each other. The distance is selected in such a manner that the number of inserted picture elements per line is proportional to the difference between the length of the respective line and the length of the shortest line (FIG. 5). |
