运动估算是视频信号的帧间预测编码中的一个重要环节,其效率和精度直接影响到编码器的性能。
Motion estimation is a very important part in the inter prediction technical of video coding, and the performance of a video coder largely depends on the efficiency and precision of motion estimation.
这些公共运动参数用于在不需要将相关的运动参数从编码器传输至解码器的情况下,生成默认时间预测。
These common motion parameters are used for generating a default temporal prediction without the need to transmit related motion vectors from the encoder to the decoder.
该算法主要包括三个特色技术:基于纹线局部走向的分类预测、体现指纹微观纹理的扩展上下文以及基于成像仪器的分类熵编码器概率模型初始化。
There are mainly three distinguishing features in our proposed algorithm:local direction-based prediction, extended context for micro texture and histogram initialization based on imaging apparatus.
此外,所述上预测性编码器和下预测性编码器可有利地包括B帧和多重预测运动补偿。
Further, the top and bottom predictive coders can advantageously include B-frames and multiple prediction motion compensation.
在CELP编码器中,通常用延迟为抽样间隔整数倍的长项预测器表征浊音语音的准周期性。
The CELP Coder usually USES a long-term predictor that the delay is the integer multiples of sampling interval to exploit the quasi-periodic structure of speech.
这样,在编码器上就能提供对故障预测有价值的数据。
In this way, data useful for the prediction of encoder failure, etc. is provided.
由于目前常用的编码器普遍采用“预测-残差”方式进行编码,因此一旦传输发生错误,不仅会影响当前帧的重建,更会造成空间及时间上的误差蔓延。
The corrupted parts of the bit-streams may not only affect the reconstruction effect of the current frames, but also cause the error propagation problems both spatially and temporally.
由于目前常用的编码器普遍采用“预测-残差”方式进行编码,因此一旦传输发生错误,不仅会影响当前帧的重建,更会造成空间及时间上的误差蔓延。
The corrupted parts of the bit-streams may not only affect the reconstruction effect of the current frames, but also cause the error propagation problems both spatially and temporally.
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