Real Time Layered Video Compression using
SIMD Computation
Morten Vadsk r Jensen and Brian Nielsen
Aalb org University
Department of Computer Science
Fredrik Ba jersvej E
DK Aalb org Denmark
fmvj bnielseng cs auc dk
Abstract We present the design and implementation of a high p erfor
mance software layered video codec designed for deployment in band
width heterogeneous networks The co dec facilitates layered spatial and
SNR signal to noise ratio co ding for bit rate adaption to a wide range
of receiver capabilities The co dec uses a wavelet subband decomp osi
tion for spatial layering and a discrete cosine transform combined with
rep eated quantization for SNR layering
Through the use of the Visual Instruction Set on SUN s UltraSPARC
platform we demonstrate howSIMDparallel image pro cessing enables
layered real time software enco ding and deco ding The co dec partitions
ers at a sp eed of our bit test video stream into lay