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Research >> Digital Video Transcoding
DescriptionThe advances in digital video coding are pushing the bounds of video delivery to larger and more versatile applications such as digital cinema. The requirements for such applications, however, include high dynamic range content with very high spatial resolutions, which give rise to the need for bit-depth scalability at the codec level and parallel decoding of spatially localized regions of the picture.
Our projects:
Transcoding: In this project, we investigate the transcoding options of a high resolution H.264/AVC encoded video stream into multiple lower resolution H.264/AVC streams each of which produces a spatially-localized section of the original video display. The benefit of such transcoding lies in the ability to distribute the projection load in digital cinema over multiple projectors with varying intensity levels so as to generate a high dynamic range projected display. Moreover, we are exploring new compression schemes for the high dynamic range video content which falls outside the existing standard specifications (e.g., H.265).
Selected Publications:
- Q. Tang and P. Nasiopoulos, “Efficient Motion Re-Estimation with Rate-Distortion Optimization for MPEG-2 to H.264/AVC Transcoding”, IEEE Transactions on Circuits and Systems for Video Technology, Vol. 20, No. 2, pp. 262-274, 2010.
- Q. Tang, P. Nasiopoulos, R. Ward, "Fast Block-Size Partitioning Using Empirical Rate-Distortion Models for MPEG-2 to H.264/AVC Transcoding, ", accepted to be presented at the IEEE International Symposium on Circuits and Systems (ISCAS 2010), May 2010.
- Q.Tang, P. Nasiopoulos, R. Ward, "Efficient Motion Vector Re-Estimation for MPEG-2 to H.264 Transcoding with Arbitrary Down-Sizing Ratios," the IEEE International Conference on Image Processing (ICIP) 2009, Cairo, Egypt, pp. 3689-3692, November 2009.
- D. Xu and P. Nasiopoulos, “Logo Insertion Transcoding for H.264/AVC Compressed Video”, the IEEE International Conference on Image Processing (ICIP) 2009, pp. 3693-3696, November 2009.
- Q. Tang, P. Nasiopoulos and H. Mansour, “Bit-Rate Estimation for Bit-Rate Reduction H.264/AVC Video Transcoding in Wireless Networks”, International Symposium on Pervasive Computing (ISWPC) 2008, pp. 464 – 467, May 2008.
- Q. Tang, P. Nasiopoulos and R. Ward, “Fast Block Size Prediction for MPEG-2 to H.264/AVC Transcoding”, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2008, pp. 1029 – 1032, Las Vegas, April 2008.
- Q. Tang, P. Nasiopoulos and R. Ward, “Compensation of Re-quantization and Interpolation Errors in MPEG2 to H.264/AVC Transcoding,” IEEE Transactions on Circuits and Systems for Video Technology, Vol. 18. No. 3, pp. 314 - 325, March 2008.
- Q. Tang, P. Nasiopoulos and R. Ward, “Efficient Chrominance Compensation for MPEG2 to H.264 Transcoding,” IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2007, pp. I.1129 - I.1132, Honolulu, Hawaii, April 2007.
- Q. Tang, R. Ward, P. Nasiopoulos, “An Efficient MPEG2 to H.264/AVC Half-Pixel Motion Compensation Transcoding,” IEEE International Conference on Image Processing (ICIP) 2006, pp. 865-868, Atlanta, October 2006.
- Q. Tang, P. Nasiopoulos, R. Ward, “An Efficient Re-quantization Error Compensation for MPEG2 to H.264 Transcoding” IEEE International Symposium on Signal Processing and Information Technology (ISSPIT) 2006, pp. 530 - 535, Vancouver, August 2006.