中华民族文化资源丰富、种类繁多且艺术形式多样，源于民族，植根民间，承载着历史记忆，延续着文化血脉，是中华民族的根与魂。文化遗产分布广、流传年代长，具有多样性、独特性和不可再生性等特点，是研究古代人类文明发展的珍贵资料。目前随着信息技术的迅猛发展以及全球化的冲击，其传承形式发生了根本性变化，特别是非物质文化遗产的人际传承方式，因此亟待在资源与媒介、内容与技术之间搭建技术的桥梁，支撑中华文化遗产的数字化传承。本文基于先进的智能计算、数字媒体和虚拟现实/增强现实技术，结合文化遗产的传播过程和艺术特点，对文化遗产收集理解、虚实结合智能展示交互和智慧化平台建设等活化关键技术的发展现状、前沿动态、热点问题和发展趋势进行分析和综述。在文化遗产收集理解方面，针对复杂文物数字化所存在的瓶颈问题，介绍数字化采集与重建关键技术；介绍文化遗产元素、主题和风格等特征提取算法，分析文化遗产的构图特征、分布特征、色彩特征和造型特征等数字化模拟过程中的关键技术，介绍基于语义特征分析、理解和识别的文化遗产理解及建设关键技术。对比和分析传统图形图像处理和深度学习方法在民族文化数字化仿真过程的优缺点，比较算法特点和算法效率，阐述存在的问题和难点，并对民族文化数字化仿真进行展望。在虚实结合智能展示交互方面，针对文化遗产的实体化展示和虚拟化展示特点，结合前沿信息技术，以多模态图像处理、小样本学习以及风格化图像生成方法为技术手段，基于多源异构大数据分析、知识图谱及深度学习等研究，综述文化遗产数字化修复的关键技术。面向文化遗产3D交互展示的需求，结合文本、音频、视频、语义和故事检索，介绍基于内容的自然人机交互技术；通过实时逼真、虚实融合渲染以及基于增强现实技术介绍相应的数字展品虚拟交互展示新技术。在智慧化平台建设方面，针对目前文化遗产智慧化平台系统管理分散导致业务协同不畅、数据缺乏统一规范导致数据难以共享，系统维护难度大、管理成本高以及用户使用不便等诸多问题，介绍文化遗产大数据模型与私有云架构关键技术研究以及相关的智慧平台建设项目。通过以上文化遗产活化的关键技术主动融入国家发展重大战略，有利于挖掘和提升民族文化遗产保护传承技术，促进文化遗产活化技术的合理利用，扩大传播影响，对弘扬中华文明、促进文化繁荣、建设少数民族示范区以及构筑文化自信具有重要意义。

The Chinese nation culture, which is of abundant resources, various categories and art styles, origins from the Chinese nation and is deeply rooted in ordinary people, has kept a long record of the historical memory and continued the cultural vein. Indeed, the Chinese nation culture is the foundation and the soul of the Chinese nation. The cultural heritage, which has the trait of widespread dissemination, long history, various styles, unique form of expression and being nonrenewable, is the precious information for exploring the development of the ancient human civilization. Nowadays, with the rapid development of information technology and the widespread impact of globalization, the formation of cultural inheritance has changed fundamentally, especially in the way of interpersonal inheritance style of the non-material cultural heritage. Therefore, there is an urgent need to construct bridges between the resource and the media, the content and the technology in order to sustain the digital inheritance of the Chinese cultural heritage. This paper is organised based on the advanced intelligent computing, digital media and virtual reality/augmented reality technology, and combines the dissemination process and artistic characteristics of the cultural heritage. From the perspective of the development status, frontier trends, hot issues and development trends, the key activation technologies are analyzed and summarized in terms of the collection of cultural heritage, the combination of virtual and real intelligent display and interaction, and the construction of intelligent platforms. Firstly, in the aspect of the collection of cultural heritage, in the view of the bottleneck problems that exist in the digitization of complex cultural relics, the key technologies of digital collection and reconstruction are introduced; the feature extraction algorithms of cultural heritage elements, themes, styles, etc., as well as the key technologies in the process of digital simulation to analyze the compositional features, distribution features, color features, and modeling features of cultural heritage are summarized; the key technologies of cultural heritage understanding and construction that are based on semantic feature analysis, understanding and recognition are introduced; the advantages and disadvantages of traditional image processing and deep learning methods in the process of digital simulation of national culture are analysed and discussed, and the characteristics and efficiency of the current algorithms are compared. Besides, the existing problems and difficulties are expounded, and an insight into the future of digital simulation of national culture is provided. Next, in the aspect of the combination of virtual and real intelligent display and interaction, for the characteristics of physical display and virtual display of cultural heritage, the key technologies of digital restoration of cultural heritage are reviewed. The important role of cutting-edge information technology including multi-modal image processing, few-shot learning and stylized image generation methods is introduced. Meanwhile, the cutting-edge research based on multi-source heterogeneous big data analysis, knowledge graph and deep learning in the digital restoration of cultural heritage are also reviewed. To satisfied the interactive 3D display needs of cultural heritage, the content-based natural human-computer interaction technology is introduced, which is combined with text, audio, video, semantics and story retrieval of cultural history. Virtual interactive presentation of new technologies is introduced in terms of real-time realistic technology, virtual-real fusion rendering, and augmented reality technology. Last but not least, in the aspect of intelligent platform construction, there still remains many problems at present, such as the decentralized system management of the cultural heritage intelligent platform, which leads to poor business collaboration, and due to the lack of unified data, it is still difficult to share data mutually. Also, the problems of the difficulty in system maintenance, the high management costs, and the inconvenience for users still need to be solved. In the view of the above mentioned problems, the key technology research of the cultural heritage big data model and the private cloud architecture and the related intelligent platform construction projects are introduced. The above key activation technologies of cultural heritage are actively integrated into the major national development strategies, and these technologies are conducive to excavating and improving the protection and inheritance technology of national cultural heritage, promoting their rational use, and expanding their dissemination influence, which is of great significance to carry forward Chinese civilization, promote cultural prosperity, build demonstration areas for ethnic minorities and enhance cultural confidence.