2020 Southwestern Ontario Orthophotography (SWOOP) Tile Index

This layer reflects the Southwestern Ontario Orthography Project (SWOOP) Tile Index from year 2020. It does not contain image files. This imagery was acquired in the spring of 2020 under the best conditions possible to achieve cloud free, snow free, ice free, smoke free, and leaf off captures. The orthophotography has a pixel resolution of 16 centimetres and is accurate to 45 centimetres on the ground at 95%. The imagery was acquired by an Vexcel UltraCamX or UCX_Prime digital cameras with airborne GPS and inertial measuring unit, and was later orthorectified using an elevation dataset generated through image correlation. Time of Capture: March 7th to May 20th, 2020 Coverage: Grey County Canopy Coverage: Leaf-Off本图层基于2020年安大略省西南部正射影像项目（Southwestern Ontario Orthography Project, SWOOP）的瓦片索引构建，未包含原始影像文件。 该影像采集于2020年春季，通过最优成像条件获取，以实现无云、无雪、无冰、无烟雾及植被落叶的拍摄效果。本正射影像的像素分辨率为16厘米，在95%置信度下的地面定位精度为45厘米。 该影像由搭载机载GPS与惯性测量单元的Vexcel UltraCamX或UCX_Prime数码相机采集，后续通过基于影像相关法生成的高程数据集完成正射校正。 拍摄时段：2020年3月7日至5月20日 覆盖范围：格雷县（Grey County） 冠层覆盖状态：落叶期