Patent ID: 8289452

Claim:
A method for determining a video deinterlacing scheme, comprising: subtracting a plurality of pixels in a (i+2)th field from corresponding pixels in an ith field to obtain a difference field, wherein the difference field is divided into a plurality of scan lines, and a plurality of pixels of each scan line are transferred in series: locating a part region of the difference field to obtain a specific check-area, wherein the specific check-area is defined according to a plurality of pixel values of the pixels of each scan line and a preset time length during which the plurality of pixel values would exceed a predetermined threshold; combining the ith field with a (i+1)th field or combining the (i+1)th field with the (i+2)th field into a specific frame; and checking a combing phenomenon of the specific check-area in the specific frame to determine the video deinterlacing scheme for pixels in the specific check-area, wherein i is a natural number; wherein the step of â€œlocating a part region of the difference field to obtain a specific check-areaâ€ comprises: when the pixel values of the pixels of each scan line start to exceed a first preset value, an area which exceeds the first preset value plus two extension ranges respectively having the preset time length and located prior to and following the area is defined as the specific check-area; wherein a pre-deinterlacing scheme according to the difference field is judged in advance.