Efficient hybrid DCT-domain algorithm for video spatial downscaling
EURASIP Journal on Advances in Signal Processing
In-network adaptation of video streams using network processors
Advances in Multimedia
A fast arbitrary-ratio downscaling algorithm for video transcoding
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
An Efficient H.264 transcoder with spatial downscaling for wireless communications
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Conversion scheme for DCT-Domain transcoding of MPEG-2 to H.264/AVC
ICIAP'05 Proceedings of the 13th international conference on Image Analysis and Processing
DCT block conversion for H.264/AVC video transcoding
Euro-Par'05 Proceedings of the 11th international Euro-Par conference on Parallel Processing
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When delivering video over communication networks, it is required to transcode the precoded video content to meet the demands of a broad range of end users with different bandwidths and resource constraints. One solution to transmit video over bandwidth-constrained channels is to reduce the spatial resolution of video frames and transmit a low-resolution version of the video as a tradeoff for the bit rate. In this paper, an arbitrary downsizing algorithm is proposed. This arbitrary downsizing algorithm is processed directly in the discrete cosine transform domain. Experimental results show that the proposed method can achieve a satisfactory performance. Compared to the existing methods, this algorithm is not only applicable to an intracoding frame but also to an intercoding frame. This is one of the crucial features of this method.