Contraband Detection in Prisons Using Safe, Continuous, Passive Terahertz Imaging (SafeJail)

英国和全球的监狱正面临着持续且日益严重的毒品和违禁品问题。2017年，英格兰和威尔士的监狱至少没收了1.5万部手机或SIM卡(每六名囚犯中就有一名，三年内增长了50%)。2017年，英格兰和威尔士的监狱里发现了13,119次毒品(每天35起以上，比2014年增加了3倍)，走私者求助于无人机等技术进行运送。工作人员走私也加剧了这种情况。根据监狱官员协会的数据，英国监狱毒品市场的价值估计为1亿GB。所有这一切都导致了监狱的动荡，危及囚犯的健康，危及所有监狱利益相关者的安全。迫切需要增强扫描技术，以便在不中断正常监狱日常工作的情况下，每天对囚犯进行安全和非侵入性的扫描。现有的解决方案要求囚犯在扫描过程中保持静止，非常耗时，而且无法检测出小于5厘米乘5厘米的违禁品。SafeJail是一个为期18个月的项目，旨在开发和演示一种新技术，用于在囚犯、访客和工作人员进行正常活动时对他们进行安全和连续的无中断扫描。该项目将开发一种被动(非发射)成像相机，具有由机器学习算法提供的稳健的对象识别能力。该技术的成功开发将使该技术在市场上投放市场6年后累计收入5800万GB。

Prisons in the UK and globally are facing continued and increasing drug and contraband problems. At least 15,000 mobile phones or SIM cards were confiscated in English and Welsh prisons in 2017 (one for every six inmates, a 50% increase in 3 years). Drugs were found 13,119 times in prisons in England and Wales in 2017 (35+ incidents per day, 3x increase from 2014), with smugglers resorting to technologies such as drones for delivery. Staff smuggling is also exacerbating the situation. The value of UK prison drug market is an estimated £100m, according to the Prison-Officers-Association. All this is leading to unrest in prisons, compromising prisoners' health and compromising the safety of all prison stakeholders.There is an urgent need for enhanced scanning techniques that can offer safe and non-invasive scanning of prisoners on a daily basis, without interruption to normal prison routine. Existing solutions require prisoners to be stationary during a scan, are time-consuming and cannot detect contraband items smaller than 5cm by 5cm. SafeJail is an 18-month project that seeks to develop and demonstrate a novel technique for the safe and continuous non-interruptive scanning of prisoners, visitors and staff as they carry out their normal activities. This project will develop a passive (non-emitting) imaging camera with robust object recognition capability provided by machine learning algorithms. The successful exploitation of the technology will result in cumulative revenue of £58m after 6 years in the market.