A reversible color transform for 16-bit-color picture coding
Proceedings of the 12th annual ACM international conference on Multimedia
Practical real-time video codec for mobile devices
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 3 (ICME '03) - Volume 03
A new diamond search algorithm for fast block-matching motion estimation
IEEE Transactions on Image Processing
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With the rapid development of wireless networks and consumer electronics, various mobile applications have emerged. However, due to some constraints such as weak computational power, limited memory and small display screen, traditional video coding applications can not work well on mobile devices. In this paper, we proposed a software-based video codec framework and its implementation which is suitable for real-time video coding applications on mobile devices. Some key optimizing techniques, such as fast predictive motion estimation (ME), zero-coefficients prejudgment and multiplierless integer discrete cosine transform (DCT), are used in our codec. Experimental results demonstrate the flexibility of our framework and the good speedup we achieved while video quality degradation is negligible. The codec is suitable for scenarios where low-complexity computing is required.