Approximating optical flow within the MPEG-2 compressed domain.
Miguel T. CoimbraMike DaviesPublished in: IEEE Trans. Circuits Syst. Video Technol. (2005)
Keyphrases
- compressed domain
- optical flow
- motion vectors
- motion estimation
- compressed video
- motion field
- image sequences
- video objects
- video analysis
- inter frame
- dct domain
- dct coefficients
- moving object segmentation
- compression standards
- bitstream
- compressed images
- shot boundary detection
- motion model
- flow field
- computer vision
- video coding
- moving object extraction
- moving objects
- motion compensation
- macroblock
- image resizing
- block matching
- motion compensated
- pixel domain
- block dct
- bit rate
- video sequences
- rate distortion
- coding scheme
- activity recognition