| 摘要 |
A data compression system for a television image has (i) a "space contour extractor" 3 for detecting those points of the image which differ in brightness from spatially-adjacent points, and (ii) a "moving detector" 4 for detecting those points whose brightness has changed in time. Information pertaining to a given point need be transmitted only if the point is detected at both (i) and (ii) (or, alternatively, if it is detected at either (i) or (ii)). The "space contour extractor" 3 selects a given point if a) that point differs from two adjacent points, or b) if that point differs from one adjacent point and the next point also differs from one adjacent point. <IMAGE> |
