新一代视频编码标准HEVC正被广泛应用，但与之相应的信息安全技术如版权保护、内容认证等相关研究甚少。为进一步提高视频编码质量，本项目拟对HEVC标准中的相关技术进行深入剖析，使用全相位双正交变换(APBT)替代原标准中的离散余弦变换(DCT)，来提升视频编码增益。为解决HEVC视频版权保护和内容认证问题，研究基于HEVC的视频水印技术。针对目前大多数的水印算法不能抵抗重压缩问题，结合APBT和奇异值分解(SVD)，提出一种可抵抗HEVC重压缩的视频水印算法。同时，为提高算法的运行效率，采用基于GPU的并行计算技术，对所提算法进行加速。本项目理论上有较大创新，所提视频压缩算法不改变HEVC编码原有框架即可提升编码性能，可广泛用于视频存储、智能监控、移动互联网等领域；所提视频水印算法突破了现有大多数算法不能抵抗重压缩以及实时性差等局限，将推动我国视频水印技术和信息安全产业的健康持续发展。

As the new generation of video coding standard, the high efficiency video coding (HEVC) is being widely used in our daily lives. However, there are few researches on the information security technology for the video encoded by HEVC, such as copyright protection, content authentication and other related researches. To further improve the quality of video coding, this project will make an in-depth analysis for the related technologies in HEVC standard. The all phase biorthogonal transform (APBT) is used to replace the discrete cosine transform (DCT) in original video coding standard to promote video coding gains. Considering the problem of video copyright protection and content authentication, this project aims to research the video watermarking scheme for HEVC standard. Given the fact that most video watermarking schemes cannot resist recompression, this project proposes a novel video watermarking algorithm by combining with APBT and singular value decomposition (SVD), which can resist HEVC compression effectively. At the same time, the GPU-based parallel computing is adopted in the algorithms to improve the operation efficiency of the algorithms. This project has great innovation in theory and the proposed video compression algorithm can improve the coding performance without changing the original framework of HEVC. Therefore, it can be broadly used in video storage, intelligent surveillance, mobile internet, and so on. In addition, the proposed video watermarking scheme breaks the limitations of the most existing algorithms which cannot resist recompression and have bad real-time performance. In conclusion, this project can promote the healthy and sustainable development of the video watermarking technology and information security industry.