TY - GEN
T1 - Amotion-augmented super-resolution scheme for very low-bit-rate video enhancement
AU - Ivanovski, Zoran A.
AU - Karam, Lina
AU - Abousleman, Glen P.
PY - 2005
Y1 - 2005
N2 - This paper presents a video enhancement scheme for very lowbit-rate compressed video. High compression ratios introduce visible compression artifacts and blurring. To enhance the quality of the compressed video, a super-resolution (SR) scheme is employed. However, the effectiveness of the SR process depends heavily on the amount of subpixel motion that exists between frames in a video sequence, and on the accuracy of the motion vectors. To increase the effectiveness of the SR process, we introduce the concept of added motion prior to video compression. The parameters of this added motion are sent to the receiver with the compressed bit-stream. The proposed SR scheme also exploits existing motion between frames, by estimating motion vectors for each pixel using the original (uncompressed) video. However, since transmitting the pixel-based motion vectors is not practical due to the resulting significant increase in side information, the proposed scheme selects and sends only a very small set of motion vectors based upon their significance in the super-resolution enhancement. The results obtained show a significant improvement in the visual quality of the video sequences, as well as improvement in PSNR.
AB - This paper presents a video enhancement scheme for very lowbit-rate compressed video. High compression ratios introduce visible compression artifacts and blurring. To enhance the quality of the compressed video, a super-resolution (SR) scheme is employed. However, the effectiveness of the SR process depends heavily on the amount of subpixel motion that exists between frames in a video sequence, and on the accuracy of the motion vectors. To increase the effectiveness of the SR process, we introduce the concept of added motion prior to video compression. The parameters of this added motion are sent to the receiver with the compressed bit-stream. The proposed SR scheme also exploits existing motion between frames, by estimating motion vectors for each pixel using the original (uncompressed) video. However, since transmitting the pixel-based motion vectors is not practical due to the resulting significant increase in side information, the proposed scheme selects and sends only a very small set of motion vectors based upon their significance in the super-resolution enhancement. The results obtained show a significant improvement in the visual quality of the video sequences, as well as improvement in PSNR.
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U2 - 10.1109/ICASSP.2005.1415479
DO - 10.1109/ICASSP.2005.1415479
M3 - Conference contribution
AN - SCOPUS:33646761327
SN - 0780388747
SN - 9780780388741
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 613
EP - 616
BT - 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05 - Proceedings - Image and Multidimensional Signal Processing Multimedia Signal Processing
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05
Y2 - 18 March 2005 through 23 March 2005
ER -