An enhanced, off-line, segment-based rate control approach is proposed for controlling the distortion variation across successive segments of a video sequence when encoding With single-layer (MPEG-4 Baseline, MPEG-4 AVC) and wavelet. video codecs. Consistent quality is achieved by a time-efficient, predictive rate-distortion modeling per segment. The individual segments are either shots or sub-shots, that are defined based oil shot segmentation and activity analysis techniques. The rate control method solves the quality stability problem of state-of-the-art codecs. especially for less mature rate control modules (such as present in MPEG-4 AVC). The processing overhead compared to classical two-pass VBR encoding is limited while the distortion variation is significantly reduced.
|Publication status||Published - 24 Oct 2004|
|Event||IEEE International Conference on Image Processing (2004) - Singapore, Singapore|
Duration: 4 Oct 2004 → …
|Conference||IEEE International Conference on Image Processing (2004)|
|Period||4/10/04 → …|
- viedo encoding
Overmeire, L., Verdicchio, F., Barbarien, J., Schelkens , P., & Nachtergaele, L. (2004). Constant quality rate-control for video encoding based on activity segmentation. 1133-1136 . Paper presented at IEEE International Conference on Image Processing (2004), Singapore, Singapore. http://ieeexplore.ieee.org/iel5/9716/30677/01419503.pdf?arnumber=1419503