The Internet of Multimedia Things (IoMT) orchestration enables the integration of systems, software, cloud, and smart sensors into a single platform. The IoMT deals with scalar as well as multimedia data. In these networks, sensor-embedded devices and their data face numerous challenges when it comes to security. In this paper, a comprehensive review of the existing literature for IoMT is presented in the context of security and blockchain. The latest literature on all three aspects of security, i.e., authentication, privacy, and trust is provided to explore the challenges experienced by multimedia data. The convergence of blockchain and IoMT along with multimedia-enabled blockchain platforms are discussed for emerging applications. To highlight the significance of this survey, large-scale commercial projects focused on security and blockchain for multimedia applications are reviewed. The shortcomings of these projects are explored and suggestions for further improvement are provided. Based on the aforementioned discussion, we present our own case study for healthcare industry: a theoretical framework having security and blockchain as key enablers. The case study reflects the importance of security and blockchain in multimedia applications of healthcare sector. Finally, we discuss the convergence of emerging technologies with security, blockchain and IoMT to visualize the future of tomorrow's applications.

多媒体物联网 (IoMT) 编排支持将系统、软件、云和智能传感器集成到一个平台中。IoMT 处理标量以及多媒体数据。在这些网络中，传感器嵌入式设备及其数据在安全方面面临着众多挑战。在本文中，在安全和区块链的背景下，对 IoMT 的现有文献进行了全面回顾。提供了关于安全的所有三个方面的最新文献，即身份验证、隐私和信任，以探索多媒体数据所面临的挑战。针对新兴应用讨论了区块链和物联网以及支持多媒体的区块链平台的融合。为了突出本次调查的意义，审查了以多媒体应用安全和区块链为重点的大型商业项目。探讨了这些项目的不足之处，并提出了进一步改进的建议。基于上述讨论，我们提出了我们自己的医疗保健行业案例研究：一个以安全和区块链为关键推动力的理论框架。该案例研究反映了安全和区块链在医疗保健领域多媒体应用中的重要性。最后，我们讨论了新兴技术与安全、区块链和物联网的融合，以可视化未来应用程序的未来。我们提出了我们自己的医疗保健行业案例研究：一个以安全和区块链为关键推动力的理论框架。该案例研究反映了安全和区块链在医疗保健领域多媒体应用中的重要性。最后，我们讨论了新兴技术与安全、区块链和物联网的融合，以可视化未来应用程序的未来。我们提出了我们自己的医疗保健行业案例研究：一个以安全和区块链为关键推动力的理论框架。该案例研究反映了安全和区块链在医疗保健领域多媒体应用中的重要性。最后，我们讨论了新兴技术与安全、区块链和物联网的融合，以可视化未来应用程序的未来。