| 摘要 |
In KVM systems for comparing new video frames to reference frames to update video, a method of reducing the effects of noise comprising (i) determining the differences between the sets of pixel values for new and reference pixels to produce a difference set of difference elements for each pixel; (ii) weighting the absolute value of each difference element within the difference set (iii) summing the weighted difference elements over all of the pixels of the horizontal line of the sub-block to produce a weighted difference element sum; (iv) determining whether the weighted difference element sum exceeds a predetermined sum threshold; (v) if yes, determining that the sub-block has changed so as to require updating.
|
