高清电视摄像机及拍摄技术  

High-definition television camera and shooting technology

作　　者：李育林[1] LI Yulin(School of journalism and communication,Huanggang Normal College,Huanggang 438000,China)

机构地区：[1]黄冈师范学院新闻与传播学院,湖北黄冈438000

出　　处：《电视技术》2018年第12期143-147,151,共6页Video Engineering

摘　　要：介绍了高清电视摄像机及高清电视技术标准,采取与标清电视摄像机对比的办法,分析了高清摄像机精准聚焦、控制曝光及艺术构图的技术要求。结合目前我国高标清同播的实际,提出了高清拍摄不仅要在景深控制、伽玛曲线理解、拐点位置选取等方面更加深入外,还要考虑兼顾标清电视画幅比例、3种不同类型(左右挤压、上下加边、左右切边)下变换模式的影响因素,使高清电视摄像机拍摄的电视画面适合在高清电视及标清电视上收看。High-definition TV cameras and high-definition TV technology standards are introduced#compared with standard definition TV cameras way to,analyzes the high-definition cameras precise focus,exposure control and the art of composition of technical requirements.Combined with the current our country starts with the actual,put forward the high definition shooting should not only in the understanding of the depth of field control,gamma curve,inflection point location selection etc.Further,consider both proportion of standard definition TVformat,three different types(about extrusion,the plus side,left and right edges)under the influencc factors of transformation patterns,high-definition television camera television images for watch in hd and standard definition TV.

关 键 词：高清电视摄像机 聚焦 景深 伽玛曲线 拐点 

分 类 号：TN948[电子电信—信号与信息处理]