Abstract
We propose a rate–distortion optimization algorithm that selects the quantization parameter and adjusts the level of the quantized DCT coefficients based on a rate–distortion measurement to achieve better video quality under a bit-rate constraint. The bit streams generated by the algorithm conform to the standards. The results show that the algorithm can achieve up to about 2.5-dB peak signal-to-noise ratio improvement compared to H.263+ TMN8 at the same bit rate.
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