Scalable implementation of H.263 video encoder on a parallel DSP system

A parallel implementation of H.263 video encoder is presented for video conferencing applications. The parallel mapping has low communication and memory requirements and is scalable, which allows encoding of any of the five standard H.263 picture formats in real-rime. The presented parallelization method is implemented in a linearly expandable multiprocessor system called PARNEU, which includes very versatile communication topology. With the prototype system using four ADSP-21062 DSPs, a real-time encoding is achieved with QCIF sized picture. Performance estimations given for a larger system show very good speed-up figures