Does Google maps use photogrammetry?

Yes, Google Maps incorporates a combination of various technologies, including photogrammetry, to create its detailed and interactive mapping platform. Photogrammetry is one of the key techniques used for capturing and processing the 3D geometry and visual information of the Earth's surface. Here's how photogrammetry contributes to Google Maps:

1. Aerial and Satellite Imagery:

   • Google Maps utilizes high-resolution aerial and satellite imagery captured from aircraft and satellites. Photogrammetric techniques are applied to process and stitch together these images, creating a seamless and detailed representation of the Earth's surface.

2. 3D Terrain Models:

   • Photogrammetry is employed to create 3D terrain models from the captured aerial and satellite imagery. This allows users to explore landscapes and urban areas in three dimensions.

3. Street View:

   • Google Street View, an immersive feature in Google Maps, provides panoramic views of streets and neighborhoods. Street View images are captured using specialized cameras mounted on vehicles, and photogrammetry is used to process and integrate these images into the map.

4. 3D Buildings:

   • Many urban areas in Google Maps feature 3D representations of buildings. Photogrammetry is used to create 3D models of structures, contributing to the visual richness of the mapping experience.

5. Depth and Elevation Data:

   • Photogrammetry can be applied to derive depth and elevation information from images. This data is used to create elevation profiles and terrain features on Google Maps.

It's important to note that while photogrammetry is a significant component, Google Maps employs a multi-faceted approach that includes data from various sources and technologies. This includes LiDAR (Light Detection and Ranging), ground-based imagery, and other mapping techniques to enhance the accuracy and completeness of the mapping platform.

Google Maps continues to evolve, and advancements in technology, including improvements in photogrammetric methods and the integration of new data sources, contribute to the platform's ability to provide up-to-date and detailed mapping information to users worldwide.