reference bit

In the process of motion estimation for very low bit rate video coding, a macroblock is partitioned adaptively with a pattern which matches the shape of edges of the objects in the macroblock, and two time differential reference frames are used.

在极低码率视频编码运动估值过程中，针对视频对象的边缘形状特征，将宏块按不同形状的模板自适应地进行分割，同时引入近期、远期2个参考帧进行块匹配。

Simulations for bit-error-rate on an additive white gaussian noise channel showed that at the threshold of visibility the required E_b/ N_0 was only 3.4 dB, which is 1.8 dB better than the reference schemes.

在加性高斯白噪声信道下的误码率性能仿真证明：在视觉门限下该方案所需的比特信噪比Eb/N0仅为3.4dB，比参考方案有约1.8dB的增益。