| 摘要 |
PCT No. PCT/GB93/00402 Sec. 371 Date Sep. 29, 1994 Sec. 102(e) Date Sep. 29, 1994 PCT Filed Feb. 26, 1993 PCT Pub. No. WO93/17520 PCT Pub. Date Sep. 2, 1993In a digital video display system, a composite time-compensated video picture, generated from a plurality of input fields, includes discontinuities, e.g. aliases resulting from relative movement of a foreground object and a background. These discontinuities are the results of time-projections from the sequential input fields or frames, which include movement of objects between the respective instants of the frames. These discontinuities are detected and are smoothed by a softening filter, in order to improve the quality of the resulting output image. In a preferred embodiment, the filtering is applied directionally, based on the nature of the discontinuity detected. |
