METHODS,SYSTEM AND APPARATUS FOR PROVIDING IMPROVED DEFINITION VIDEO

A method is provided for deinterlacing pixels in a video display system operable to display images as a plurality of pixels arranged in first and second fields of interlaced rows, at least one video component level quantified by a numerical video component value characterizing each pixel in an image with the video component levels for the pixels in the first and second fields being updated on alternate scans. A global mean video component value is computed from the video component values generated for a previous scan of at least one of the first and second fields. A global standard deviation is computed for the global mean. A local mean video component value is computed from the video component values generated for a plurality of pixels being updated as part of the current scan of the first field and defining a neighborhood of a pixel in the second field being deinterlaced. A local standard deviation is computed form the local mean video component value. The local standard deviation is compared with a selective multiple of the global standard deviation and if the local standard deviation is less than the selected multiple of the global standard deviation, the video component value generated for the pixel being deinterlaced as part of the previous scan of the second field is carried forward and if the local standard deviation exceeds the selected multiple of the global standard deviation then the video component value for the pixel being deinterlaced is set to the computed local mean video component value.