Duplicate video system using alternate temporal subsampling

Cheul-hee Hahm; Jae S. Lim

doi:10.1117/12.411599

28 December 2000 Duplicate video system using alternate temporal subsampling

Cheul-hee Hahm, Jae S. Lim

Proceedings Volume 4115, Applications of Digital Image Processing XXIII; (2000) https://doi.org/10.1117/12.411599
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

In this paper, we propose a new method to improve the performance of a duplicate video transmission system. The proposed method is based on an alternate temporal sub-sampling approach, which is to transmit the encoded even-numbered and odd-numbered pictures through separate channels. At the receiver, the decoded pictures from both channels are combined by alternately choosing one from each channel. The proposed method uses the full capacity of both regular and backup channels for failure-free video transmission. Experimental results show that the proposed alternate temporal sub-sampling method gives about 1.0 to approximately 4.0 dB improvements in PSNR over the conventional simulcast one at the bit rates of 2 to approximately 15 Mbps/channel for failure-free video transmission.

Citation Download Citation

Cheul-hee Hahm and Jae S. Lim "Duplicate video system using alternate temporal subsampling", Proc. SPIE 4115, Applications of Digital Image Processing XXIII, (28 December 2000); https://doi.org/10.1117/12.411599

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