Gigapixel big data movies provide cost‐effective seascape scale direct measurements of open‐access coastal human use such as recreational fisheries

Collecting data on unlicensed open‐access coastal activities, such as some types of recreational fishing, has often relied on telephone interviews selected from landline directories. However, this approach is becoming obsolete due to changes in communication technology such as a switch to unlisted mobile phones. Other methods, such as boat ramp interviews, are often impractical due to high labor cost. We trialed an autonomous, ultra‐high‐resolution photosampling method as a cost effect solution for direct measurements of a recreational fishery. Our sequential photosampling was batched processed using a novel software application to produce “big data” time series movies from a spatial subset of the fishery, and we validated this with a regional bus‐route survey and interviews with participants at access points. We also compared labor costs between these two methods. Most trailer boat users were recreational fishers targeting tuna spp. Our camera system closely matched trends in temporal ...针对无许可开放海岸活动（如部分休闲垂钓类型）的数据采集，过往常依托从固定电话簿中选取样本开展的电话访谈进行。然而随着通信技术变革，例如转向未登记的移动电话，此类方法正逐渐过时。诸如船坡道访谈这类其他采集手段，亦因人力成本高昂而往往难以落地。本研究尝试采用自主式超高分辨率照片采样方法，作为休闲渔业直接观测的高效低成本解决方案。我们通过一款新型软件对连续照片采样结果进行批量处理，从该渔业的空间子集区域生成"big data"时序影像，并通过区域公交线路调查以及对沿岸访问点参与者的访谈对该方法进行了验证。同时我们还对比了两种采集方法的人力成本。绝大多数拖船使用者为以金枪鱼属（tuna spp.）为目标鱼种的休闲垂钓者。本研究的摄像系统与时序...趋势高度吻合。