...文件中,以供第二次运算 参考,第二次运算的时候,编码器会根据第一次压缩时获得的信息以及我们指定的目标码率(Target Bitrate) ,目标码率也就是最终文件的平均码率, 。
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实验结果表明,该方法能更加接近目标码率,并获得更高的视觉质量和PSNR。
As shown in experiments, the proposed algorithm achieves a bit rate closer to the target, and provides an improved visual quality and the higher PSNR.
对于视频通信来说,由于通信带宽有限,必须将码率控制在一定的范围,以达到在给定目标码率的条件下,尽可能达到高质量的解码图像。
Since the bandwidth is limited in video communications, we must control the bit rate in a certain range to improve the quality of decoded pictures under the predefined target bit rate.
实验结果表明,与JVT-H017提案相比,改进算法可以更精确地分配目标比特和控制码率,并能获得较高的PSNR。
Simulation results show that, comparing with JVT-H017, the proposed method can allocate the target bits and control the rate more accurately, and obtain a higher PSNR.
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