Introduction
This block provides high-resolution 8-bit Hexagon aerial images, either as downloaded or streamed products. These images are acquired with Leica ADS100 and Leica DMC III large format digital airborne sensors on a yearly basis in the USA. The datasets are available starting with 2014.
Technical information
Block versions
Compatible blocks
| Compatible blocks | Compatible blocks |
|---|---|
| Advanced Water-Related Geohazards Predictor | Raster Tiling |
| Building Bounding Box Detector | Raster Zonal Statistics |
| Co-Registration | Sharpening Filter |
| Export Data (Raster) | Simularity Dynamic Range Adjustment using Histogram Equalization |
| K-means Clustering | Soil Adjusted Vegetation Index |
| NDVI | Spectral Data Converter - RGB |
| Normalized Difference Vegetation Index | Temporal Change Detection |
| Raster CRS Conversion | Vectorization |
Geographic coverage
The datasets are mostly covering urban areas from the following regions in USA:
For more information about data availability and acquisition per year, please refer to the Hexagon website.
Dataset information
| Specifications | Description |
|---|---|
| Spatial resolution | 15 cm |
| Image type | Optical |
| Acquisition mode | Mono |
| Geometric processing level | Ortho |
| Revisit frequency | Yearly |
| Data availability | 2014-present |
| Spectral bands | R G B NIR |
| File format | GeoTIFF - HxGN Content Program, 15 cm (Download) n.a. - HxGN Content Program, 15 cm (Streaming) |
| Bit depth | 8 bits per pixel |
| Coordinate system | EPSG 3857 |
| Can be reused in an UP42 workflow | No |
Limitations
The maximum AOI size is 25 km2. By default, the most recent image is returned. The streamed image or any derived dataset that contains the original pixel values cannot be downloaded. For more information about the end user license agreement of the streamed product, please refer to the marketplace.
Metadata
The acquisition date and other metadata are displayed in the file data.json, which is generated along with the downloaded Hexagon image:
How it works
| Supported JSON parameters | Default value | Min | Max | Examples | |
|---|---|---|---|---|---|
zoom_level | 20 | 3 | 20 | "zoom_level": 20 | |
bbox/intersects | null | n.a. | 25 km2 | Please check the examples from the JSON parameters. |
Disclaimer
HxGN provides all the image tiles intersecting a certain AOI or bounding box. The smaller the zoom level, the larger the tiles and the larger the credit consumption (the pricing is per km2). We strongly advise not changing the zoom level value during job configuration.
Examples
Example based on a workflow created with the data block HxGN Content Program, 15 cm (Download):
Example based on a workflow created with the data block HxGN Content Program, 15 cm (Download) and NDVI:
Example based on a workflow created with the data block HxGN Content Program, 15 cm (Streaming) and Vectorization: