标准动态范围和高动态范围转换方法研究与测试  

Study and Test on Conversion Methods Between SDR and HDR

作　　者：周芸[1] 郭晓强[1] 王亚明 Zhou Yun;Guo Xiaoqiang;Wang Yaming(Academy of Broadcasting Science,NRTA,Beijing 100866,China;Yutian Socam AV System Corp,Beijing 100020,China)

机构地区：[1]国家广播电视总局广播科学研究院,北京100866 [2]北京宇田索诚科技股份有限公司,北京100020

出　　处：《广播与电视技术》2021年第1期43-48,共6页Radio & TV Broadcast Engineering

摘　　要：在高清SDR向4K HDR过渡阶段,涉及多种复杂的SDR和HDR转换场景,包括SDR到HDR转换、HDR到SDR转换、SDR-HDR-SDR往返转换等,不同厂家的转换设备在转换效果上参差不齐,不利于超高清视频产业高质量发展。本文在跟踪研究国内外SDR和HDR转换技术发展的基础上,结合应用现状,重点分析了场景参考(SR,SceneReferred)映射和显示参考(DR,Display Referred)映射两类SDR和HDR转换方法和转换流程,测试评估了不同转换方法的转换效果,给出了不同应用场景下转换方法的选择建议,为SDR和HDR转换应用提供技术参考。During the transition phase from HD SDR to 4K HDR, there are multiple complex SDR and HDR conversion scenarios, including SDR to HDR conversion, HDR to SDR conversion, SDR-HDR-SDR round-trip conversion, etc. Conversion effects of conversion equipment from different manufacturers are uneven, which is not conducive to high-quality development of ultra-high-definition video industry. On the basis of tracking and studying the development of SDR and HDR conversion technologies at home and abroad, and combined with application status, this paper focuses on the analysis of two types of SDR and HDR conversion methods and procedure, including scene-referred mapping and display-referred mapping, tests and evaluated the effects of different methods, and gives suggestions on selection of conversion methods in different application scenarios, which provide technical references for the application of SDR and HDR conversions.

关 键 词：高动态范围 标准动态范围 BT.709 BT.2020 转换 

分 类 号：G221[文化科学] TN94[电子电信—信号与信息处理]