WorldView 2 Imagery - Kahoolawe

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）已从数字地球公司（DigitalGlobe, Inc.）为该正射影像（Orthoimagery）数据集获取企业高级许可。任何未将本产品用于商业开发或商业用途的政府机构、教育机构、非营利组织以及公众/个人，均可使用该授权数据。任何个人、企业或组织为获取利润或收取费用而将本产品用于商业用途的行为，均被严格禁止。如需更多信息，请参阅数字地球公司另行附带的许可协议。 正射影像兼具数字图像的成像特性与地图的几何属性。本数据集的核心动态数字正射影像地面分辨率为50厘米，投影与基准面均按照本元数据文档“空间参考信息”章节中用户指定的参数设置。保留边缘冗余数据，以方便镶嵌时的色调匹配，并确保影像重投影后覆盖范围完整。 数据默认按行（lines，即rows）与列（samples，即columns）组织。每一行的像素按从西向东的顺序排列，而行的排列顺序则为从北向南。 数字地球公司的WorldView-2卫星正射影像以GeoTIFF文件格式交付给美国农业部。美国农业部-自然资源保护局-国家土壤制图中心（USDA-NRCS-NGMC）使用ERDAS 2011软件，将数字地球公司交付的WorldView-2（简称WV-2）多光谱/全色数据分三个区段进行处理，生成了8波段、16位深度的全色锐化镶嵌影像。各分区先被重采样至8位深度并重新计算统计参数，随后合并为无缝的8位全岛镶嵌影像。从8波段16位镶嵌影像中提取第2、3、4波段，生成自然色（RGB）镶嵌影像。所得镶嵌影像通过ERDAS 2011软件从16位深度重采样至8位深度。使用断点编辑器调整影像对比度，并将断点参数保存并应用于经查找表（Look-Up Table, LUT）拉伸后的输出文件。 使用LizardTech GeoExpress 8软件将RGB镶嵌影像压缩生成第三代MrSID格式文件。该MrSID压缩文件附带一份符合联邦地理数据委员会（FGDC）标准的元数据文件。复合文件包含以下三个多光谱波段：第2波段：蓝光（450-510纳米），第3波段：绿光（510-580纳米），第4波段：黄光（585-625纳米）。 如需更多信息，请联系夏威夷州规划办公室全州GIS项目组，地址：美国夏威夷州火奴鲁鲁市PO Box 2359，邮编96804；电话：[phone]；电子邮箱：[e-mail]；官网：https://planning.hawaii.gov/gis。