WorldView 2 Imagery - Niihau

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. 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.为该正射影像（Orthoimagery）数据集购买了企业高级许可。任何政府、教育机构、非营利组织，以及未从事“商业开发或商业用途产品”使用的公众/个人，均可使用该许可数据。个人、公司或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。 数字正射影像将数字图像的影像特性与地图的几何精度特性相结合。本数据集的核心动态数字正射影像地面分辨率为50厘米，已投影至本元数据文档空间参考信息部分中定义的客户指定投影与基准面。附带的边缘重叠数据可便于镶嵌作业时的色调匹配，并确保影像重投影后实现完整覆盖。数据的常规存储排列方式为按行（lines）与列（samples）组织，每行包含一系列从西向东排序的像素，行的排列顺序为从北向南。 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，使用ERDAS 2011生成了8波段、16位的全色锐化（Pan-Sharpen）镶嵌图。从该8波段16位镶嵌图中提取波段2、3和4，以创建自然色（RGB）镶嵌图。随后使用ERDAS 2011将生成的镶嵌图从16位深度重缩放至8位深度。通过断点编辑器调整图像对比度，并保存断点参数并应用于查找表（Look-Up Table，LUT）拉伸输出文件。使用LizardTech GeoExpress 8将RGB镶嵌图转换为压缩的第3代MrSID格式文件。该MrSID压缩文件附带一份单独的符合联邦地理数据委员会（Federal Geographic Data Committee，FGDC）标准的元数据文件。 本复合文件包含以下三个多光谱波段： 波段2：蓝（450 - 510 nm） 波段3：绿（510 - 580 nm） 波段4：黄（585 - 625 nm） 如需更多信息，请联系夏威夷州全域GIS项目、夏威夷州规划办公室；通信地址：夏威夷火奴鲁鲁市邮政信箱2359，邮编96804；联系电话：[phone]；电子邮箱：[e-mail]；官方网站：https://planning.hawaii.gov/gis。