SBIR Phase II: Ballistics Matching Using Three Dimensional Images of Bullets and Cartridge Cases

*9861361海恩斯这个小型企业创新研究第二阶段项目将开发一个系统，用于测量子弹和弹壳上的条纹深度，并将这些数据用于计算机化的弹道匹配分析。当开枪时，子弹上的划痕形成了一个独特的签名，可以与同一把枪发射的其他子弹相匹配。目前的条纹匹配技术是专有的“RotoScan”机器，它使用子弹图像的二维亮度数据。其糟糕的错误匹配率源于这样一个事实，即即使是从同一支枪发射的子弹，也往往只在子弹表面的一小部分匹配。第一阶段确定了三维测量和深度数据用于弹道匹配的可行性。第二阶段将在自动弹道匹配作业中整合条纹深度数据，并将这些数据格式化，以便在区域或全国弹道数据库中使用。预计将在测量硬件和分析软件方面进行商业应用，以实现有效的新执法工具。用户将包括各级政府法医实验室的枪支检查员。***

*** 9861361 Haynes This Small Business Innovation Research (SBIR) Phase II project will develop a system for depth measurement of striations on bullets and cartridge cases and for using these data in computerized ballistics matching analysis. When a gun is fired, the scratches made on a bullet create a unique signature which can be matched with other bullets fired from the same gun. The current striation-matching technology is the proprietary "RotoScan" machine, which uses two-dimensional luminance data from bullet images. Its poor false match rate arises from the fact that bullets fired from even the same gun will often match only over a small portion of a bullet's surface. Phase I established the feasibility of three-dimensional measurement and the utility of depth data for ballistics matching. Phase II will implement the integration of striation depth data in automated ballistics matching operations and format these data for use in regional or nationwide ballistics databases. Commercial applications are expected in the measurement hardware and analytical software for an efffective new law enforcement tool. Users would include Firearms Examiners in forensics laboratories at all levels of government. ***