Patent ID: 7116715
Filing Date: 2006-10-03
Classification: H04N

Abstract:
1. A video coding apparatus for coding a video picture by either a field structure or a frame structure, the video coding apparatus comprising: means for discriminating whether each of sequentially input video pictures is an interlaced video picture or a non-interlaced video picture; and means for coding by the field structure in response to discriminating that the video picture is an interlaced video picture and for coding by the frame structure in response to discriminating that the video picture is a non-interlaced video picture, wherein in order to discriminate whether the input video picture is an interlaced video picture or a non-interlaced video picture, the spatial correlation of pixels continuous in a vertical direction at an arbitrary position inside the video picture is measured, so that the video picture is discriminated to be an interlaced video picture if the correlation between the same fields is higher than the correlation between different fields.