| 摘要 |
An encoder/decoder for a moving picture and a method thereof is provided to compensate for the global movement of the entire screen image to obtain high-efficiency compression performance. An encoder includes a prediction/compensation part, a subtracter, a transform/quantization part(110), and an encoding part(190). The prediction/compensation part compensates for the global movement of a screen image derived from camera movement by using a reference image signal based on camera motion parameters. The subtracter outputs a difference between a present video signal and an image subject to motion compensation. The transform/quantization part(110) transforms the difference into a frequency band to perform quantization. The encoding part(190) encodes the quantized result.
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