Loudoun Imagery 2010

More Metadata Loudoun County annually obtains leaf-off, aerial imagery in the spring. Since 2004, the County has scanned this imagery to support the development of an annual digital orthophoto base. In 2010, the imagery was captured with a DMC digital camera, in 4-band (R,G,B, and NIR) format. These files contain 1-foot ground-resolution, 8-bit, 4-band orthorectified aerial image map products in GeoTIFF version 6.0 file format. GeoTIFF files are uncompressed raster images complete with TFW coordinate information. The aerial imagery project encompasses the entire land area of the County of Loudoun, VA. Images were flown during leaf-off conditions and cover 5000' by 5000' and are tiled according to the 2002 VBMP 200-scale gridding schema (Virginia Geographic Information Network).附加元数据：劳登县（Loudoun County）每年春季都会采集落叶期航空影像。自2004年起，该县便对该影像进行扫描数字化处理，以支撑年度数字正射影像底图的构建工作。2010年，该影像由DMC数码相机采集，采用4波段（红、绿、蓝及近红外（NIR））格式。此类文件采用GeoTIFF 6.0版本格式，包含1英尺地面分辨率、8位色深的4波段正射校正航空影像地图产品。GeoTIFF文件为未压缩栅格影像，附带完整的TFW坐标信息。本航空影像项目覆盖弗吉尼亚州劳登县（Loudoun County, VA）的全部陆地疆域。影像采集于落叶期，单幅影像尺寸为5000英尺×5000英尺，并按照2002年VBMP 200比例尺网格方案（弗吉尼亚地理信息网络（Virginia Geographic Information Network））进行分幅处理。