Forensic scientist Henry Lee (李昌鈺) and National Applied Research Laboratories (NARL) on Tuesday unveiled a forensic camera that can detect injuries and evidence beneath the skin that are invisible to the naked eye.
One of the most difficult aspects of collecting evidence at crime scenes is detecting invisible injuries, as it takes time for a bruise to develop, and the window between the onset of a violent incident and the detection of noticeable injuries is a period when forensic medical examination is inadequate.
NARL developed imaging technology able to detect ruptured blood vessels and blood extravasation beneath the skin by measuring blood oxygen levels with a blue and ultraviolet dual-light device, NARL researcher Mark Lin (林宇軒) said.
Photo: Chen Wei-han, Taipei Times
“Blood contains hemoglobin and bilirubin, which turn fluorescent when exposed to blue and ultraviolet lights. The light emitted by hemoglobin and bilirubin exhibits different colors depending on blood-oxygen levels,” Lin said.
“Lower blood oxygenation occurs when blood vessels are ruptured and blood congeals, so forensic scientists can determine the scope and severity of injuries beneath the skin with images taken by the device,” Lin said.
“Traditionally, investigators rely on experience and the colors of a bruise — if there is one — to determine when an injury was inflicted, but now they can estimate the time of injury with more precision by measuring blood oxygen levels,” Lee said.
The device can be used to help victims of domestic violence and sexual assaults in which injuries might be less apparent, Lee said.
The forensic camera can also take pictures of fingerprints and body fluids, and the data can then be instantly transmitted to a crime laboratory anywhere in the world, enabling data-matching to be undertaken and senior investigators to direct crime-scene investigations remotely.
Lee demonstrated a remote crime-scene investigation with the forensic camera, as he instructed two rookie investigators on what evidence to collect and where to collect it via a computer screen, with images of the scene and fingerprints displayed in real time.
That could help understaffed police units to process a crime scene in a professional manner, he said.
“Such technology can take the crime lab to the crime scene, instead of the other way around, as we are used to. The technology can also be used to fight terrorism on a global level, as images taken at a certain location can be immediately analyzed by experts around the world,” Lee said.
Police have detained a Taoyuan couple suspected of over the past two months colluding with human trafficking rings and employment scammers in Southeast Asia to send nearly 100 Taiwanese jobseekers to Cambodia. At a media briefing in Taipei yesterday, the Criminal Investigation Bureau presented items seized from the couple, including alleged victims’ passports, forged COVID-19 vaccination records, mobile phones, bank documents, checks and cash. The man, surnamed Tsai (蔡), and his girlfriend, surnamed Tsan (詹), were taken into custody last month, after police at Taiwan Taoyuan International Airport stopped four jobseekers from boarding a flight to Phnom Penh, said Dustin Lee (李泱輯),
BILINGUAL PLAN: The 17 educators were recruited under a program that seeks to empower Taiwanese, the envoy to the Philippines said The Taipei Economic and Cultural Office in the Philippines on Thursday hosted a send-off event for the first group of English-language teachers from the country who were recruited for a Ministry of Education-initiated program to advance bilingual education in Taiwan. The 14 teachers and three teaching assistants are part of the Taiwan Foreign English Teacher Program, which aims to help find English-language instructors for Taiwan’s public elementary and junior-high schools, the office said. Seventy-seven teachers and 11 teaching assistants from the Philippines have been hired to teach in Taiwan in the coming school year, office data showed. Among the first group is 57-year-old
TRICKED INTO MOVING: Local governments in China do not offer any help, and Taiwanese there must compete with Chinese in an unfamiliar setting, a researcher said Beijing’s incentives for Taiwanese businesspeople to invest in China are only intended to lure them across the Taiwan Strait, after which they receive no real support, an expert said on Sunday. Over the past few years, Beijing has been offering a number of incentives that “benefit Taiwanese in name, while benefiting China in reality,” a cross-strait affairs expert said on condition of anonymity. Strategies such as the “31 incentives” are intended to lure Taiwanese talent, capital and technology to help address China’s economic issues while also furthering its “united front” efforts, they said. Local governments in China do not offer much practical
‘ORDINARY PEOPLE’: A man watching Taiwanese military drills said that there would be nothing anyone could do if the situation escalates in the Taiwan Strait Many people in Taiwan look upon China’s military exercises over the past week with calm resignation, doubting that war is imminent and if anything, feeling pride in their nation’s determination to defend itself. After a visit to Taiwan last week by US House of Representatives Speaker Nancy Pelosi, China has sent ships and aircraft across an unofficial buffer between Taiwan and China’s coast and missiles over Taipei and into waters surrounding the nation since Thursday last week. However, Rosa Chang, proudly watching her son take part in Taiwanese military exercises that included dozens of howitzers firing shells into the Taiwan Strait off