Bronze level automatically awarded US beta

This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.

USGS High Resolution Orthoimagery Collection - Current - National Geospatial Data Asset (NGDA) High Resolution Orthoimagery

Description

USGS high resolution orthorectified images from The National Map combine the image characteristics of an aerial photograph with the geometric qualities of a map. An orthoimage is a uniform-scale image where corrections have been made for feature displacement such as building tilt and for scale variations caused by terrain relief, sensor geometry, and camera tilt. A mathematical equation based on ground control points, sensor calibration information, and a digital elevation model is applied to each pixel to rectify the image to obtain the geometric qualities of a map. A digital orthoimage may be created from several photographs mosaicked to form the final image. The source imagery may be black-and-white, natural color, color infrared, or color near infrared (4-band) with a pixel resolution of 1-meter or finer. With orthoimagery, the resolution refers to the distance on the ground represented by each pixel. There is no image overlap between adjacent files. Data received at EROS were reprojected from source projection to a standard utm projection and resolution resampled to align to the U.S. National Grid (USNG) using The National Map. The naming convention is based on the USNG, taking the coordinates of the SW corner of the orthoimage. The metadata were imported and updated for display through The National Map at http://nationalmap.gov/viewer.html Image-level metadata are provided in HTML and XML format. Data were compressed utilizing IAS software. The compression was JPEG2000 Lossy Compressed. The file format created was .jp2.

General Information

Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.

  • The rights statement is at

    http://catalog.data.gov/dataset/usgs-high-resolution-orthoimagery-collection-current-national-geospatial-data-asset-ngda-high Do you think this data is incorrect? Let us know

  • Outside the US, this data is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • There are

    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

  • The content is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • This data contains

    no data about individuals Do you think this data is incorrect? Let us know

Practical Information

  • The data appears in this collection

    http://catalog.data.gov/organization/usgs-gov Do you think this data is incorrect? Let us know

  • The accuracy or relevance of this data will

    go out of date but it is timestamped Do you think this data is incorrect? Let us know

  • The data is

    backed up offsite Do you think this data is incorrect? Let us know

Technical Information

  • The format of this data is

    a standard open format Do you think this data is incorrect? Let us know

Social Information

  • The documentation includes machine-readable data for

    title Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    description Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    identifier Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    landing page Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    release frequency Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    publisher Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    distribution(s) Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    release date Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    modification date Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    temporal coverage Do you think this data is incorrect? Let us know

  • The documentation includes machine-readable data for

    spatial/geographical coverage Do you think this data is incorrect? Let us know

  • The documentation about each distribution includes machine-readable data for

    release date Do you think this data is incorrect? Let us know

  • The documentation about each distribution includes machine-readable data for

    a URL to access the data Do you think this data is incorrect? Let us know

  • The documentation about each distribution includes machine-readable data for

    a URL to download the dataset Do you think this data is incorrect? Let us know

  • Find out how to contact someone about this data at

    http://catalog.data.gov/dataset/usgs-high-resolution-orthoimagery-collection-current-national-geospatial-data-asset-ngda-high Do you think this data is incorrect? Let us know

  • Find out how to suggest improvements to publication at

    http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/usgs-high-resolution-orthoimagery-collection-current-national-geospatial-data-asset-ngda-high Do you think this data is incorrect? Let us know