Groveland Township MrSID 2025

<p><span>This metadata record describes the 0.25-foot pixel resolution digital orthoimagery produced for Oakland County, MI by the Sanborn Map Company. The orthoimagery provided is 4-band (R, G, B, NIR), 8-bit per pixel and delivered in uncompressed TIFF/TFW format and compressed 3-band (R, G, B) MrSID mosaics (20:1, Gen3). The data was flown between April 27th and May 12th, 2025 at an altitude of 15700 feet (AMSL) using an UltraCam Osprey M3 camera and complies with the American Society for Photogrammetry and Remote Sensing Accuracy Standards (ASPRS) for Class 1, large scale maps at 1" = 50'.&nbsp; This orthoimagery is published in Michigan South State Plane, NAD83, International foot.</span></p>

本元数据记录详细介绍了由桑伯恩地图公司（Sanborn Map Company）为密歇根州奥克兰县生产的0.25英尺像素分辨率数字正射影像数据集。该正射影像具备4波段（红、绿、蓝、近红外（NIR））规格，每像素采用8比特量化，交付格式包含未压缩TIFF/TFW文件，以及压缩比为20:1的第3代3波段（红、绿、蓝）MrSID镶嵌影像。本数据采集于2025年4月27日至5月12日期间，飞行高度为15700英尺（平均海平面高度，AMSL），搭载相机为UltraCam Osprey M3，且符合美国摄影测量与遥感学会精度标准（ASPRS）中针对1英寸=50英尺比例尺的1级大型比例尺地图精度要求。该正射影像采用密歇根州南部州平面坐标系（NAD83，国际英尺）进行发布。