Types of Photogrammetry and their Differences: A Complete Guide

Photogrammetry is a fundamental technique in cartography, topography, mining and infrastructure, used to generate highly accurate digital terrain models. There are different types of photogrammetry depending on the image capture platform and data processing method.

At AerolaserAs specialists in aerial, terrestrial and digital photogrammetry, we use advanced technology to transform imagery into accurate geospatial information. In this article, we will explore the different types of photogrammetry, their differences, applications and advantages.

What is Photogrammetry and how has it evolved?

Photogrammetry is the science of obtaining three-dimensional information from two-dimensional images. With the advancement of technology, it has evolved from analog methods to the use of drones, LiDAR sensors and artificial intelligence.

Its classification is based on two main criteria:

1️⃣ Capture Method → Depending on the platform from which the images are taken.
2️⃣ Processing Method → According to the way in which the data are processed.

Types of Photogrammetry by Capture Method

1. Aerial Photogrammetry

This is done using images captured from drones or aircraft, allowing large areas to be modeled with high precision.

Applications:

✅ Cartography and urban planning → Creation of maps for infrastructure and land use planning.
✅ Precision agriculture → Crop analysis using multispectral imagery.
✅ Mining and geology → Quarry survey and excavation control.

Advantages:

✔️ Speed in data capture.
✔️ Coverage of large extensions of land.
✔️ Integration with LiDAR sensors for greater accuracy.

Limitations:

⚠️ Dependence on favorable weather conditions.
⚠️ High costs compared to terrestrial methods.

2. Terrestrial Photogrammetry

It is based on the use of cameras located on the ground or vehicles, providing a high level of detail in structures and buildings.

Applications:

✅ Topographic surveying → Measurement of land for construction and civil engineering.
✅ 3D reconstruction of buildings and monuments → Documentation of cultural heritage.
✅ Infrastructure control → Monitoring of bridges, roads and tunnels.

Advantages:

✔️ Greater precision in structural details.
✔️ Ideal for measuring medium-sized objects.

Limitations:

⚠️ Not suitable for large extensions of land.
⚠️ Requires more time for data capture.

3. Satellite Photogrammetry

It is carried out by means of images obtained by satellites in orbit, allowing the analysis of large territories.

Applications:

Environmental monitoring → Control of deforestation and changes in water bodies.
✅ Natural disaster management → Damage assessment after earthquakes or floods.
✅ Territorial planning → Urban growth analysis.

Advantages:

✔️ Large-scale monitoring without the need for field deployment.
✔️ Access to historical imagery for geospatial change analysis.

Limitations:

⚠️ Lower resolution compared to drones or terrestrial cameras.
⚠️ High cost of image acquisition.

Types of Photogrammetry by Processing Method

4. Analytical Photogrammetry

Method based on mathematical calculations and analogical models to process images.

Characteristics:

✅ Used before the development of digital photogrammetry.
✅ Requires manual measurement and geometric calculations.
✅ It is based on analog aerial photographs with paper references.

Limitations:

⚠️ Slow process and dependent on manual calculations.
⚠️ Lower accuracy compared to digital methods.

5. Digital Photogrammetry

It is based on automated image processing using advanced software and artificial intelligence.

Characteristics:

✅ Use of drones, LiDAR sensors and digital cameras.
✅ Generation of orthophotos, 3D models and point clouds with high accuracy.
Integration with Geographic Information Systems (GIS) for geospatial analysis.

Advantages:

✔️ Faster and more efficient processing.
✔️ Increased accuracy through automation of algorithms.

Limitations:

⚠️ Requires advanced technology and specialized software.
⚠️ Costs associated with software licenses and high-end hardware.

Comparison of Capture and Processing Methods

Conclusion

Photogrammetry has evolved with the use of advanced technology and automated methods, allowing its application in multiple industries. At AerolaserWe combine innovation and experience to offer geospatial solutions tailored to the needs of each client.

To learn more about our services and how they can optimize your project, please visit our photogrammetry services.