4K数字电影剪辑技术研究及应用

发布时间：2018-03-04 18:19

本文选题：4K电影　切入点：非线性编辑软件　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：在电影后期生产领域,一款多能的非线性编辑系统比需要庞大机构和众多交互系统的电影后期系统更加的实用,这是由广播影视行业的特点所决定的。在4K非编设计之初就坚定的贯彻一个理念:以一款全面高效的软件来支持4K的全部后期流程应用,以一款全功能的非编来一站式解决大部分后期难题。本文主要研究在编辑4K数字电影的过程中,一站式的进行非线性编辑软件后期包装生产过程中保持与早期的HD(高清晰度)在电影制作领域所产生的一致性,深入探讨了直接在非线性编辑软件中编辑4K原质量视频、特效以及音频的包装生产。具体来说,本文阐述了在非线性编辑软件中高效编辑4K数字电影技术,给出了一种4K原质量视频处理的算法,并使用LUT(Look-Up Table)色彩管理查找表对4K原质量视频进行色彩校正,以及多声道音频的编辑和解码。在4K数字电影剪接中,本文首先将文件原格式导入就完全直接剪辑,而无需转码或者重新解码生成。如果文件的格式、帧速率、编解码器仍存在尺寸的不同。则在调色过程中,使用LUT解决90%的曝光、白平衡、色差及饱和度微调等。通过使用LUT可以快速实现电影的质感和色彩,不需做任何节点调节,也不必改变对颜色校正;在原始文件不同显示设备的情况下,如果不对原来图像进行处理,不会造成任何损伤,且能节约大量渲染时间,同时也可满足不同需求的色调,而且流程操作简单省时。针对音频编辑,各种变换,如淡入、淡出、音量调节等,测试表明,通过数字滤波算法进行的变换,如高通、低通滤波器,支持多达48个音轨,15个低轨道,更多的采样率和比特率,并在320 Kbps的数据速率的ITU-R可等效为7.1声道的传输高质量的音乐。
[Abstract]:In the field of late film production, a multi-functional nonlinear editing system is more practical than a post-movie system that requires a large number of institutions and many interactive systems. This is determined by the characteristics of the radio, film and television industry. At the beginning of the 4K non-editing design, the firm implementation of the idea: a comprehensive and efficient software to support all 4K later process applications, In this paper, we mainly study the process of editing 4K digital movie. One-stop non-linear editing software in the process of packaging production to maintain the early HD( high definition) in the field of film production, in-depth discussion of editing 4K original quality video directly in the non-linear editing software. The special effects and audio packaging production. Specifically, this paper describes the efficient editing of 4K digital film technology in the non-linear editing software, and gives an algorithm of 4K video processing with original quality. The color management look-up table of LUT(Look-Up is used to correct the 4K original quality video, and to edit and decode the multi-channel audio. In the 4K digital movie splicing, this paper first imports the original format of the file to complete the direct editing. If the file format, frame rate, codec still exist size difference. Then in the color adjustment process, using LUT to solve the exposure of 90%, white balance, Color difference and saturation fine-tuning. By using LUT can quickly achieve film texture and color, without any node adjustment, do not have to change the color correction; in the case of different display devices in the original file, If the original image is not processed, it will not cause any damage, and can save a lot of rendering time, at the same time, it can also meet the different needs of the hue, and the operation of the process is simple and time-saving. For audio editing, all kinds of transformations, such as fade in, fade out, Volume adjustment and so on, tests show that by digital filtering algorithms such as high-pass, low-pass filters, support up to 48 tracks, 15 low tracks, more sampling rate and bit rate, And at 320 Kbps the data rate of the ITU-R can be equivalent to 7.1 channels of transmission of high quality music.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：J932;TP391.41

【参考文献】