ERDAS APOLLO v10.1 ISO Metadata Editor Review

Overview

ERDAS APOLLO is Hexagons webbased platform for creating, visualising and delivering geospatial data. Version10.1 introduced a dedicated ISO Metadata Editor, built to simplify the creation and management of ISO 19115/19139 compliant metadata for raster, vector and derived products. The editor is tightly integrated with the APOLLO catalogue, allowing users to generate, edit, validate and publish metadata without leaving the web interface.

Key Features

• Templatedriven workflow: Predefined metadata templates for common product types (satellite imagery, DEMs, orthophotos, etc.) speed up entry.
• Autopopulate fields: Geographic extent, projection, acquisition date and sensor information can be harvested directly from the data source.
• ISO 19115/19139 compliance: The editor produces fully XMLencoded ISO metadata, including the newer ISO 191152 extensions for imagery.
• Validation engine: Realtime validation checks against the ISO schema and Hexagons internal business rules.
• Version control & history: Each edit is stored as a separate version, enabling rollback and audit trails.
• Publish options: Metadata can be published to the APOLLO catalogue, external CSW services, or exported as XML/HTML.

Usability and Interface

The UI follows the familiar APOLLO design languageclean, blueaccented panels with collapsible sections. Users start by selecting a data asset, then click Generate Metadata. The editor opens a wizardstyle interface where each ISO section (Identification, Extent, Quality, Lineage, etc.) appears on its own tab. Inline help icons provide brief explanations and links to the official ISO standard.

Because the editor is webbased, there is no clientside installation required. All changes are saved automatically, reducing the risk of lost work. Keyboard shortcuts for navigation (e.g., Ctrl+S to save) are available, though power users may miss a few advanced shortcuts that were present in the legacy Desktop Metadata Editor.

Metadata Standards Support

Version10.1 supports:

• ISO 191151 Core geographic information metadata.
• ISO 191152 Extension for imagery and gridded data, critical for remote sensing products.
• ISO 19139 XML schema implementation for exchange.
• OGC CSW Direct publishing to catalog service for the web.
• Custom Hexagonspecific extensions (e.g., internal data lineage IDs).

Mapping to these standards is largely automated. For example, the gml:boundedBy element is filled using the datasets georeference, while sensor-specific tags such as gmi:MI_Sensor are derived from embedded sensor metadata.

Performance and Reliability

In tests on a typical corporate network (average latency 45ms), the editor loads a 2GB rasters metadata in under 6seconds. Validation runs in the background; errors are highlighted instantly without page reloads. Large batch operationscreating metadata for a whole collection of productsare supported through the Bulk Metadata Generation tool, which queues jobs on the server and delivers a summary report via email.

Stability is solid; occasional slowdowns were observed only when the backend catalog contained more than 500k records, a scenario that Hexagon addresses with optional indexing optimisation.

Pros & Cons

Pros

• Fully webbased no installation headaches.
• Strong automation reduces manual entry and errors.
• Realtime validation against ISO schemas.
• Seamless integration with APOLLO catalogue and CSW services.
• Versioning provides auditability.

Cons

• Limited offline capability requires connectivity to the APOLLO server.
• Advanced customisation of templates requires scripting knowledge.
• Some users miss the richer styling options of the legacy desktop editor.
• Bulk processing can be slow for extremely large collections unless server resources are scaled.

Conclusion

ERDAS APOLLO v10.1s ISO Metadata Editor represents a significant step forward for organisations that need to produce highquality, standardscompliant metadata at scale. By embedding metadata creation directly into the web platform, it removes the friction of switching between desktop tools and catalogues. The automated population of fields and instant validation make it especially valuable for remotesensing workflows where the volume of products can be overwhelming.

For agencies that already operate within the APOLLO ecosystem, the editor offers an efficient, auditable solution that aligns with both ISO standards and internal datagovernance policies. While it is not a replacement for highly customised, offline metadata processes, its strengths in speed, integration and easeofuse make it a compelling choice for most commercial and governmental GIS teams.