ISO 19115-2 (Geographic Information – Metadata Part 2)
ISO 19115-2 extends ISO 19115 specifically for imagery and gridded data. These extensions also allow for the documentation of data collected via instrumentation. The root of ISO 19115 metadata records will change from MD_Metadata to MI_Metadata when using ISO 19115-2. A new section is also added, gmi:acquisitionInformation includes the new packagage, MI_AcquisitionInformation.
MI_Acquisition includes several other new packages. MI_Operation provides information of the overall data gathering program. MI_Platform provides information about the platform from which the data were taken. MI_Instrument provides designation of the measuring instruments used to acquire the data. MI_Objective describes the characteristics and geometry of the intended object to be observed. MI_Requirement details the requirements used to derive the acquisition plan. MI_Plan details the implementation. MI_Event describes a significant even that occurred. MI_PlatformPass identifies a particular pass made by the platform during data acquisition. The spatial representation package is extended in ISO 19115-2. MD_Georectified is extended to include check point information to further specify georectification details, from MI_GCP, in MI_Georectified. MD_Georeferenceable is extended to include additional information that can be used to geolocate the data, from MI_GeolocationInformation, in MI_Georeferenceable.
Content information is extended to describe the content of a coverage. MD_Band is extended to define additional attributes for specifying properties of individual wavelength bands in MI_Band. MI_RangeElementDescription was added to provide indentification of the range of elements used in a coverage dataset. MD_ImageDescription is extended to include MI_RangeElementDescription in MI_Image Description. MD_CoverageDescription is also extended to include MI_RangeElementDescription in MI_CoverageDescription.
Data Quality was also extended in ISO 19115-2. LI_Source was extended to describe the output of a process step in LE_Source. LE_ProcessStepReport was added to identify external information about the processing steps. LE_Algorithm is added to describe the methodology used to derive the data from the source data. LE_Processing includes LE_Algorithm and adds information to describe the procedure by which the algorithm is applied to generate the product. LI_ProcessStep is extended to describe additional information on the history of algorithms used and the processing performed to produce the data in LE_ProcessStep. QE_Usability is added to provided specific quality information about a dataset’s suitability for a particular application. DQ_Result is extended to include information required to report data quality for a coverage in QE_CoverageResult. MD_SpatialRepresentation, MD_CoverageDescription, and MD_Format are added to data quality in order to describe the coverage result. MX_DataFile is added to identify a complete report of the quality of the coverage.