Method for converting interlaced video signals into non-interlaced video signals and video signal converter for implementing this method

摘要

Method for converting interlaced video signals into non-interlaced video signals, the said video signals being available in the form of successive digital samples associated with each point of a starting image. This method comprises: a. a first operation for detecting inter-image motion; b. a second operation for estimating motion by searching, for each block of the current frame, for the best possible correlation between the current block considered in this current frame and a series of blocks considered in succession in the preceding frame T-1, the estimated motion then being that which leads to the said current block from the block of frame T-1 and for which the correlation is effectively the best; c. a third operation of vertical interpolation for the generation within the current frame of intermediate lines between the existing lines; d. a fourth operation for selecting the value to be associated with each point of the lines to be generated in each block of the current frame, from three specified values; e. a fifth operation of final image reconstruction. Application: video signal converters for high-definition television.