WorldView 2 Imagery - Hawaii Island

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 a pan sharpen, 3 bands product (Natural Color). 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.）为本正射影像（Orthoimagery）数据集购置了企业高级授权许可。任何政府、教育、非营利机构以及未从事"产品商业开发或商业用途"的公众/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。详细信息请参阅数字地球公司另行附带的许可协议。 数字正射影像融合了数字图像的影像特性与地图的几何精度特性。本核心动态数字正射影像的地面分辨率为50厘米，可投影至本元数据文档空间参考信息章节中定义的用户指定投影与基准面。数据附带边缘冗余区域，以方便镶嵌作业的色调匹配，并确保影像重投影后覆盖完整。 数据的常规存储方向为行（lines）与列（samples）：每行包含一系列自西向东排列的像素，行的排列顺序则为自北向南。 数字地球公司WorldView-2卫星正射影像以GeoTIFF文件格式交付至美国农业部。美国农业部自然资源保护局-国家土壤测绘中心（USDA-NRCS-NGMC）对数字地球交付的WorldView-2（WV-2）多光谱/全色数据捆绑包进行处理，生成了全色锐化的3波段自然色产品。 各单独区块先被重缩放至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。波段2、3与4从8波段、16位镶嵌影像中被提取，以生成自然色（RGB）镶嵌影像。 生成的镶嵌影像通过ERDAS 2011软件从16位深度重缩放至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查找表（LUT）拉伸后的输出文件。 使用LizardTech GeoExpress 8软件将RGB镶嵌影像转换为第三代压缩MrSID格式文件。该MrSID压缩文件随附一份符合FGDC标准的独立元数据文件。 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项目组，夏威夷州规划办公室；邮政信箱2359，火奴鲁鲁，夏威夷州96804；电话：[phone]；电子邮箱：[e-mail]；官方网站：https://planning.hawaii.gov/gis。