SBIR Phase I: Authentication of Mobile Video Recordings (MVRs) Based on Real-time Hybrid Digital Watermarking

该小型企业创新研究(SBIR)第一阶段项目旨在开发一种能够部署数字移动视频录制(MVR)系统的身份验证技术。MVR数据每天由全国执法部门运营的一支非常庞大的巡逻车车队收集，记录涉及与平民接触的事件。由于与操作当前的模拟、非索引系统相关的惊人成本，对计算机化的数字MVR技术有着巨大的需求。然而，它的部署受到法律接受的阻碍，因为数字媒体很容易被更改。身份验证通过提供有效手段来保护MVR内容的完整性，从而发挥关键的使能作用。本研究项目的目标是开发一个实时MVR认证软件原型，基于一种新的、与现有数字基础设施无缝集成的混合水印算法。该算法是专门为满足下一代MVR系统提出的严格操作要求而设计的。通过纠错签名编码和率失真引导比特嵌入法，在单个水印中实现了渐变的稳健性。它结合了脆弱水印定位内容篡改的能力和稳健水印表征内容更改严重程度的能力。SBIR项目中设想的MVR身份验证为全国执法机构部署数字MVR系统提供了一种使能技术，该系统比当前的模拟系统更有效，操作成本也更低。该公司的技术受到新泽西州警察MVR项目一系列现实和具体要求的启发和模仿，其纯软件解决方案旨在轻松、无缝地与其数字基础设施集成。它提供了一种安全、经济的机制来保护MVR内容的完整性，对巡逻人员和MVR管理员的日常工作影响最小。新泽西州警察局和全国各地的类似机构可以很容易地采用这项技术，通过部署数字MVR系统来实现巨大的成本节约。

This Small Business Innovation Research (SBIR) Phase I project is aimed at developing an authentication technology that enables the deployment of a digital Mobile Video Recordings (MVR) system. MVR data are collected daily by a very large fleet of patrol vehicles operated by the law enforcement community across the country that record events involving contact with civilians. Due to staggering costs associated with operating current analog, non-indexing systems, there is an overwhelming need for a computerized digital MVR technology. Its deployment, however, is hindered by legal acceptance, because a digital medium can be easily altered. Authentication plays a critical enabling role by providing an effective means to safeguard the integrity of MVR content. The objective of this research project is to develop a prototype for real-time MVR authentication software, based on a novel, hybrid watermarking algorithm, that integrates seamlessly with existing digital infrastructure. This algorithm is specifically designed to meet stringent operational requirements set forth by next generation MVR system. It achieves progressively varying robustness in one single watermark by means of error-correcting signature coding and rate-distortion guided bit embedding. It combines fragile watermark's ability to localize content tampering and robust watermark's ability to characterize the severity of content alteration.The MVR authentication, envisioned in this SBIR project, provides an enabling technology for the deployment of a digital MVR system for law enforcement agencies across the country that is more effective and much less costly to operate than the current analog system. The company's technology is inspired by and modeled after a set of realistic and specific requirements of the MVR program of the New Jersey (NJ) State Police, and its software-only solution is designed to integrate easily and seamlessly with its digital infrastructure. It provides a secure and economical mechanism for safeguarding MVR content integrity that is minimally invasive to the daily routines of patrol officers and MVR administrators. This NJ State Police and similar agencies across the country can easily adapt this technology so as to realize enormous cost saving through the deployment of a digital MVR system.