A New Method for Region-Based Depth Ordering in a Video Sequence: Application to Frame Interpolation
✍ Scribed by Jenny Benois-Pineau; Henri Nicolas
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 555 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1047-3203
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✦ Synopsis
Region-based interpolation schemes for video sequences have grown in popularity with the introduction of the new object-based representation of video such as in the MPEG4 standard. A new method of a region-based interpolation of missing frames in video sequences for a rate up-conversion is proposed. The method allows an interpolation of both original video frames and segmentation maps for objectbased content manipulation. The method uses a 2 1 2 D model of video scene content corresponding to the depth ordering of plane motion-homogeneous regions along the depth axis. A method for determining the depth order of regions in a frame is developed based on a motion analysis in occluding areas and an optimal graph search. This depth order is used for a motion-compensated interpolation based on an affine motion model. Results in real video sequences in CCIR601 format for upconversion of video rate are obtained, showing a good quality compared to a B-frame interpolation scheme of MPEG 1,2 standards.