Title :
An efficient H.264 video encoder based on BF548 DSP
Author :
Chou-Chen Wang ; Hsiang-Chun Wang ; Yi-Chieh Tsai ; Jin Feng
Author_Institution :
Dept. of Electron. Eng., I-Shou Univ., Kaohsiung, Taiwan
Abstract :
In this paper, an efficient H.264 encoder based on ADI BF548 DSP is proposed. In order to speed up the process of encoding in H.264, we propose an efficient algorithm for early detecting all-zero integer cosine transform (ICT) coefficient blocks (AZB) by combining Parseval energy conservation theorem and the successive elimination algorithm (SEA). A mathematical inequality is derived from Parseval theorem and applying SEA for motion estimation (ME). An initial standard compliant raw-C encoder has been optimized in speed for target processor. In addition, the parallelism between algorithm execution and data movement has been fully exploited using DMA. Experimental results demonstrate that the encoding rate can reach above 30 fps as using QCIF video.
Keywords :
encoding; transforms; video codecs; video coding; ADI BF548 DSP; AZB; H.264 encoder; H.264 encoding; H.264 video encoder; ICT; Parseval theorem; QCIF video; SEA; coefficient blocks; encoding rate; initial standard compliant raw-C encoder; integer cosine transform; mathematical inequality; motion estimation; parseval energy conservation theorem; successive elimination algorithm; Algorithm design and analysis; Digital signal processing; Encoding; Optimization; Quantization (signal); Standards; Video coding;
Conference_Titel :
Next-Generation Electronics (ISNE), 2013 IEEE International Symposium on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4673-3036-7
DOI :
10.1109/ISNE.2013.6512328