Video de-interlacer using motion residue compensation

A video de-interlace system, comprising:

• an in-field generation circuit which averages odd lines of interlaced information and which averages even lines of said interlaced information to determine first and second in-field frames;
• a residue generation circuit which determines a residue frame comprising differences between even and odd lines of said interlaced information;
• a residue processing circuit which determines a motion metric of said residue frame and which filters said residue frame based on said motion metric to provide a filtered residue frame;
• and
• a combiner which combines said first and second in-field frames with said filtered residue frame to provide a corresponding progressive video frame.

A de-interlacer device, comprising:

• a memory;
• an input interface, coupled to said memory, which receives and stores interlaced information into said memory;
• an output interface, coupled to said memory, which outputs progressive information stored in said memory;
• an in-field generation circuit, coupled to said memory, which averages odd lines of said interlaced information and which averages even lines of said interlaced information to determine first and second in-field information stored in said memory;
• a residue generation circuit, coupled to said memory, which determines differences between said odd and even lines of said interlaced information to determined residue information stored in said memory;
• a residue processing circuit, coupled to said memory, which determines a motion metric of said residue information and which filters said residue information using filter coefficients determined based on said motion metric to provide filtered residue information;
• and
• a combiner, coupled to said memory, which combines said first and second in-field information with said filtered residue information to provide said progressive information.