2022年7月27日

一名来自南澳大利亚大学的博士生发现了如何用无人机精确测量野生动物的心跳和呼吸频率。在遥感工程师Javaan Chahl教授的指导下，王丹义与电影摄影师Douglas Thron合作，使用信号处理技术从无人机拍摄的视频中检测斑马、黑貂羚羊、水羚和长颈鹿的生命体征。该技术由Chahl教授和他的团队在2019年首创，已被用于提取无人机远距离拍摄的动物的心脏和呼吸频率。与Thron的合作是在他读到Chahl教授与阿德莱德动物园的遥感研究之后开始的。Thron使用配备红外摄像机、变焦镜头和聚光灯的专用无人机拍摄影片，以拯救受自然灾害影响的动物。2020年，世界野生动物基金会聘请他在澳大利亚毁灭性的森林大火后寻找脆弱的野生动物，之后他在澳大利亚呆了6个月。这段经历——以及在非洲马拉维进行的世界上第一次实验——被记录在一个名为“拯救道格”(Doug to the Rescue)的系列纪录片中，通过好奇心流频道在全球30多个国家播放。在马拉维的纪录片中，王和Chahl教授通过Zoom接受了采访，讨论了他们在捕捉动物胸腔微小动作时所面临的挑战，这些动作是由Thron的无人机从50多米的距离拍摄的。Chahl说:“我们必须在视频中选择合适的序列，让它足够稳定，以便我们获得心率，但我们能够做到这一点。”据王说，这只黑貂羚羊的心率处于正常范围的中间，呼吸频率处于较低的一端，这表明它非常健康，即使有无人机存在，它也完全没有压力。 Likewise, the vital signs captured from a giraffe, zebra, and waterbuck were all in the expected range. “It was exciting to work with a US-based documentary team on location in Malawi, via video conferencing from Adelaide, while Australia’s borders were closed,” Wang says. “It just shows what is possible in a research context using modern technology, even in a pandemic.” Wang was also part of the university team who worked remotely with Canadian drone manufacturer Draganfly in 2020 to create pandemic screening technology for humans. Chahl says there is significant potential to use the same technology to monitor the health of wildlife globally, particularly endangered animals, and assist conservation efforts. “We have demonstrated that a drone can be used to film wildlife at long distances without disturbing or stressing them, and then use AI techniques to successfully extract cardiopulmonary signals to remotely monitor for signs of poor health,” he said. This first appeared in the subscription newsletter CommsWire on 26 July 2022. Read 4 times It's all about Webinars. Marketing budgets are now focused on Webinars combined with Lead Generation. If you wish to promote a Webinar we recommend at least a 3 to 4 week campaign prior to your event. The iTWire campaign will include extensive adverts on our News Site itwire.com and prominent Newsletter promotion https://itwire.com/itwire-update.html and Promotional News & Editorial. Plus a video interview of the key speaker on iTWire TV https://www.youtube.com/c/iTWireTV/videos which will be used in Promotional Posts on the iTWire Home Page. Now we are coming out of Lockdown iTWire will be focussed to assisting with your webinars and campaigns and assistance via part payments and extended terms, a Webinar Business Booster Pack and other supportive programs. We can also create your adverts and written content plus coordinate your video interview. We look forward to discussing your campaign goals with you. Please click the button below.