The systematic process of extracting features from imagery, such as roads, railways and water bodies, that can be displayed on maps or in a Geographic Information System (GIS).
Process of preparing a separate drawing, engraving, or negative for selected types of data in the preparation of a map or chart.
Belt of low flat ground bordering a stream channel that is flooded when runoff exceeds the capacity of the stream channel.
Lines, resembling contour lines, drawn to present a conception of the shape of the terrain without regard to a true datum or regular spacing.
Our image data is offered in different formats depending upon what kind of image application software requirements you have. The formats available for each sensor are included on each product page. Examples of formats are:
Band Interleaved by Line
Band Interleaved by Pixel
The archive header file used by the EDC Data Center is a Committee on Earth Observing Satellites (CEOS) Inventory Exchange Format (IEF) data exchange file. CEOS provides a three character abbreviation for all participating archive centers and receiving stations.
Band sequential format with simplified single header file structure. Used with Landsat and IRS data.
TIFF with geographic coordinates included in file header.
a multiband continuous image file (name is derived from Landsat).
Band sequential format with complicated file 'superstructure'. The format is seldom used but the multiple headers, leaders, descriptors and supplemental files have specialized information, including ephemeris and attitude data, useful for the orthorectification of Landsat data.
Band sequential format with complicated file 'superstructure"; includes ephemeris and attitude data, useful for the orthorectification of data.
Tag Image File Format. The most common image file format used by commercial GIS software
TIFF World (TFW)
ASCII file containing information for geocoding image data.