Abstract: A method for a 3:2 pull-down film source detection. First, a source is received. Then, field differences of two fields of the same type in the source and an average field difference according to the field difference corresponding to at least one prior field in the source are calculated. The source is established as a 3:2 pull-down film source by checking whether a 3:2 pull-down signature is in the source according to the field difference and the average field difference, and a bad editing point is detected according to an interlaced frame information of the source.

Abstract: An edge-oriented interpolation method for deinterlacing with sub-pixel accuracy. To interpolate a missing pixel of a first scan line, first, a first pixel group of a second scan line and a second pixel group of a third scan line in a first orientation are provided, and a third pixel group of the second scan line and a fourth pixel group of the third scan line in a second orientation are provided. Then, a first sub-pixel of the second scan line is calculated according to the first pixel group and the third pixel group, and a second sub-pixel of the third scan line is calculated according to the second pixel group and the fourth pixel group by employing a linear interpolation method or an ideal interpolation function based on the sampling theorem. Thereafter, the missing pixel is interpolated according to the first sub-pixel and the second sub-pixel.

Abstract: A method for detecting dynamic video pixels by using adaptive counter threshold values according to field difference value of the frame in the video, thereby to determine whether the frame is an interlaced frame or a progressive frame and to eliminate incorrect judgements resulting from field difference and to improve accuracy of frame determination.