H．264兼容的全景视频编码方法

在拍摄全景视频时,摄像头往往仅在水平方向上移动。由于在水平移动中偶尔有轻微的上下抖动,以及传感器采集引入的噪声,直接对其进行H.264编码,编码效率不高。针对全景视频拍摄和H.264编码的特点,提出了一种对全景视频高效的H.264编码方法,首先将原始全景视频合成一张全景图;然后再把全景图直接转换为标准H.264码流。实验结果表明,采用该方法对其编码,与直接编码原始视频相比,编码效率大大提高。

A H. 264 Compatible Encoding Scheme for Panoramic Video

When capturing panoramic scene,the camera usually moves only in the horizontal direction.If we encode the captured panoramic video directly,the encoding efficiency will be low dueto the possible light dithering of the camera in the vertical direction and noise introduced by sensor.This paper presents a highly efficient algorithm for encoding panoramic video with H.264 standard according to its special characteristics.First,we convert the original panoramic video to a panoramic image.Then we can convert the panoramic image to H.264 bit-stream directly.Compared to the encoding of the original panoramic video, the algorithm we present highly improve the encoding efficiency.