WorldView 2 Imagery - Oahu

USDA has purchased a Enterprise Premium license for this Orthoimagery dataset from DigitalGlobe, Inc. Any government, education, not-for-profit agency and public/individuals not engaged in using the "Product for Commercial Exploitation or Commercial Purposes" can use this licensed data. Use of this product for Commercial Purposes by a person/company/organization for a profit or fee is strictly prohibited. Please refer to the separately attached license from DigitalGlobe, Inc. for additional information. Digital orthoimagery combines the image characteristics of a digital image with the geometric qualities of a map. The primary dynamic digital orthophoto is a 50 centimeter ground resolution, image cast to the customer specified projection and datum defined in the Spatial Reference Information section of this metadata document. The overedge is included to facilitate tonal matching for mosaicking and ensure full coverage if the imagery is reprojected. The normal orientation of data is by lines (rows) and samples (columns). Each line contains a series of pixels ordered from west to east with the order of the lines from north to south. DigitalGlobe WorldView-2 Satellite Orthoimagery was delivered to USDA in GeoTIFF file format. USDA-NRCS-NGMC processed the DigitalGlobe delivered WorldView-2 (WV-2) Multi-Spectral/Pan data bundle to produce an 8 Band, 16 Bit Pan-Sharpen Mosaic using ERDAS 2011 in three sections. The individual sections were rescaled to 8-bit and the statistics were recalculated before merging into a seamless 8-bit full island mosaic. Bands 2, 3 & 4 were subset from the 8 band, 16-bit mosaic to create a natural color (RGB) mosaic.The resulting mosaic was rescaled from 16-bit to 8-bit depth using ERDAS 2011. The image contrast level was adjusted using the Breakpoint editor and breakpoints were saved and applied to the LUT stretched output file. LizardTech GeoExpress 8 was used to create a compressed Generation 3 MrSID from the RGB mosaic. The MrSID compressed file is delivered with a separate FGDC compliant metadata file. The composite file contains the following three Multi-Spectral bands: Band 2: Blue (450 - 510 nm) Band 3: Green (510 - 580 nm) Band 4: Yellow (585 - 625 nm) For additional information, please contact Hawaii Statewide GIS Program, Office of Planning, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; [phone]; email: [e-mail]; Website: https://planning.hawaii.gov/gis.美国农业部（USDA）已从DigitalGlobe, Inc.购置本正射影像（Orthoimagery）数据集的企业高级许可。任何政府、教育机构、非营利性组织，以及未从事"商业开发或商业用途产品"的公众/个人，均可使用该许可数据。任何个人/公司/组织为获取利润或收费而将本产品用于商业用途的行为均被严格禁止。详细信息请参阅DigitalGlobe, Inc.另行附带的许可协议。 数字正射影像兼具数字图像的影像特性与地图的几何属性。本动态数字正射影像的原始地面分辨率为50厘米，影像投影与基准面将按照本元数据文档空间参考信息章节中用户指定的内容进行设置。影像包含边缘冗余区域，以便于镶嵌时的色调匹配，并确保影像重投影后覆盖范围完整。数据的标准排布方式为行（lines）与列（samples）：各行像素按自西向东的顺序排列，各行则按自北向南的顺序排布。 DigitalGlobe WorldView-2卫星正射影像以GeoTIFF文件格式交付给USDA。USDA-NRCS-NGMC对DigitalGlobe交付的WorldView-2（WV-2）多光谱/全色数据捆绑包进行处理，通过ERDAS 2011分三个区块生成8波段、16位深度的全色锐化镶嵌影像。各区块先被重缩放至8位深度并重新计算统计信息，随后合并为无缝的8位全岛镶嵌影像。从8波段16位镶嵌影像中提取波段2、3与4，以生成自然色（RGB）镶嵌影像。 所得镶嵌影像通过ERDAS 2011将位深度从16位重缩放至8位。使用断点编辑器调整影像对比度，并保存断点并应用于查找表（LUT）拉伸输出文件。使用LizardTech GeoExpress 8将RGB镶嵌影像压缩为第三代MrSID格式文件。该MrSID压缩文件将随附单独的符合联邦地理数据委员会（FGDC）标准的元数据文件。该复合文件包含以下三个多光谱波段： 波段2：蓝色（450 - 510 nm） 波段3：绿色（510 - 580 nm） 波段4：黄色（585 - 625 nm） 如需更多信息，请联系夏威夷州全域GIS项目（Hawaii Statewide GIS Program），夏威夷州规划办公室；通讯地址：夏威夷火奴鲁鲁市PO Box 2359，邮编96804；联系电话：[phone]；电子邮箱：[e-mail]；官方网站：https://planning.hawaii.gov/gis。