| 摘要 |
There is provided an improved latency rate distortion optimization apparatus comprising a forward quantize unit (1200) for processing input coefficients (Wij), an inverse quantize unit (1300) coupled to the forward quantize unit (1200), and at least one look-up-table (150) of quantize values for use by the forward (1200) and inverse (1300) quantize units, wherein the at least one look-up-table (150) of quantize values further includes any one or more of the following modified quantize multiplication factors: negative forward quantize multiplication factors (−MF); pre-shifted forward quantize multiplication factors (MFps); negative pre-shifted forward quantize multiplication factors (−MFps); negative inverse quantize multiplication factors (−V); pre-shifted inverse quantize multiplication factors (Vps); or negative pre-shifted inverse quantize multiplication factors (−Vps), and the forward quantize unit (1200) is arranged to operate on the input coefficients (Wij) using one of the modified forward quantize multiplication factors, and the inverse quantize unit (1300) is arranged to operate on the output of the forward quantize unit (1200) using one of the modified inverse quantize multiplication factors.
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