Aerial photography can create images with half-meter resolution if the plane flies at 6,000 feet or so, but more images are required, pushing up expenses.
Aerial photography can create images with half-meter resolution if the plane flies at 6,000 feet or so, but more images are required, pushing up expenses.
如果飞行高度维持在1800公尺左右，航空摄影便可以制作解析度高达半公尺的影像，但是这就需要更多影像，费用也会大幅增加。