block-level/mode-level co-reordering approach for intra prediction in 4kx2 k H.264/AVC video encoder
- W. Y. Lo, Lun, D.P.-K, W. C. Siu, W. Wang, J. Song
- IEEE 17th Asia and South Pacific on Design…
This study presents a parallel very large scale integrated circuits architecture for an intra-predictor based on a fast 4 × 4 algorithm. For real-time scheduling, the proposed algorithm overcomes the data dependency between intra-prediction and intracoding, thereby improving coding performance and reducing the number of coding cycles. The high-speed architecture for intraprediction includes configurable computation cores to process YUV components using 10 pixel parallelism. Prediction for one macro-block (MB) coding (luminance: 4 × 4 and 16 × 16 block modes; chrominance: 8 × 8 block modes) can all be completed within 256 cycles. The proposed architecture achieves throughput of 410 kMB/s, suitable for 1920 × 1080/35 Hz 4:2:0 HDTV encoder at a working frequency of 105 MHz.