| 摘要 |
A method for reducing noise in a reference frame of video information by determining the mean absolute difference, MADo, between each block in the reference frame and identically located blocks in adjacent frames. If MADo is <A, the block in an adjacent frame is held for averaging with the block in the reference frame, but if MADo for the block is >A, a search is made for a block in the adjacent frame that matches the block in the reference frame. This is labelled MADmin. If MADo for the block in the adjacent frame is <BMADmin, the matching block is not used in the average. If MADo is not <BMADmin, the matching block can be used in the average, but preferably this is not done if MADmin exceeds a value C. The values of A, B and C are determined by experience for the block size used.
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