Building detection

An algorithm that detects buildings in SPOT, Pléiades, or Pléiades Neo imagery and returns a probability map.


Overview

The algorithm identifies all pixels that are part of a building in SPOT, Pléiades, or Pléiades Neo imagery. The result is a GeoTIFF file that maps the probability of each pixel being part of a building.

Building detection can be used for urban planning, fire risk estimation, and land use management.

An input Pléiades image of Superior, Wisconsin (USA)

A building probability map

See more on the marketplace.

Training data and accuracy

The algorithm has been developed using semantically annotated imagery captured over the following countries:

  • United States
  • Mexico
  • France
  • Belgium
  • Portugal
  • India
  • Nepal
  • Indonesia
  • Australia

The accuracy ranges from 80% to 90% depending on input image resolution and location. For optimal results, the algorithm must be applied to imagery captured over the listed territories. You can apply it to similar areas, but the same level of performance isn’t guaranteed.

Requirements for input imagery

The STAC item must be a supported data product:

The STAC item must be CNAM-compatible. Check that the STAC item has been added to storage in 2023 or later.

Input parameters

Required parameters

Input imagery

You need to specify the STAC items you want to apply the process to.

Output title

You need to specify the title of the output objects. This title will be assigned to the resulting STAC item and STAC collection.

API input

Use the detection-buildings-spacept name ID for the processing API.

A sample input payload for the process

JSON

    {
  "inputs": {
    "title": "Processing imagery over Berlin",
    "item": "https://api.up42.com/v2/assets/stac/collections/21c0b14e-3434-4675-98d1-f225507ded99/items/23e4567-e89b-12d3-a456-426614174000"
  }
}

  
ParameterOverview
inputs.titleobject / required
The title of the output objects: STAC item and STAC collection.
inputs.itemobject / required
The STAC item link in the following format: https://api.up42.com/v2/assets/stac/collections/{collection-id}/items/{item-id}