Orion 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>

本元数据记录介绍由桑伯恩地图公司（Sanborn Map Company）为密歇根州奥克兰县制作的0.25英尺像素分辨率数字正射影像数据集。本次提供的正射影像包含4波段（红、绿、蓝、近红外（NIR），每像素8位，交付格式包含未压缩的TIFF/TFW格式文件，以及压缩比20:1的3波段（红、绿、蓝）MrSID镶嵌影像（Gen3版本）。该数据于2025年4月27日至5月12日期间，以15700英尺（平均海平面高度（Above Mean Sea Level, AMSL））的飞行高度，使用UltraCam Osprey M3相机采集完成。本数据集符合美国摄影测量与遥感学会（American Society for Photogrammetry and Remote Sensing, ASPRS）一级大型比例尺地图精度标准，对应制图比例尺为1英寸=50英尺。本正射影像采用密歇根南州平面坐标系、NAD83及国际英尺基准。