LiDAR Vs Photogrammetry- Which One Is Suitable For Your Project?

As technology advances, the world of surveying and mapping is no exception. Drone technology has revolutionized this field, offering a more efficient and cost-effective way to capture aerial data. Among the different types of drone-based surveying techniques, LiDAR and photogrammetry are two of the most popular.

Each of these two drone data capture techniques has its own unique set of advantages and disadvantages. In this article, we'll explore LiDAR and photogrammetry, compare the two, and help you decide which technique is better for your surveying needs.

Capturing Data With Two Best Technologies

Before we dive into the comparison between LiDAR and photogrammetry, let's briefly discuss these two cutting-edge techniques for capturing aerial data. LiDAR, which stands for Light Detection and Ranging, is a technique that uses lasers to create a detailed 3D model of the environment. On the other hand, photogrammetry uses a series of overlapping photographs taken from different angles to create a 3D model. You can ask a LiDAR surveying company for the details.

Which One Suits The Latest Trends In Technology?

The field of drone surveying and mapping is a rapidly evolving one. Many industries, including agriculture, construction, mining, and urban planning, have already used drone-based surveying for mapping and data collection. Drone-based, photogrammetry or LiDAR surveying techniques have become popular because they provide accurate measurements of larger areas in a shorter amount of time.

Photogrammetry- The Definition

Photogrammetry is a technique that involves capturing a series of overlapping photographs of a subject or area from different angles using a drone. The photographs are then stitched together using specialized software to create a 3D model of the subject or area. Photogrammetry is widespread because it is cost-effective and produces highly accurate results.

LiDAR- The Definition

LiDAR is a technique that uses lasers to measure the distance between the drone and objects on the ground. It works by emitting laser pulses, which bounce off objects and return to the drone, where they are recorded. The distance to the object is calculated based on the time the laser pulse returns. LiDAR surveying is a widespread technique because it can capture data through vegetation and create accurate 3D models.

Photogrammetry Or LiDAR- Which Suits Better For An Aerial Survey?

When it comes to surveying, both photogrammetry and LiDAR have their own set of advantages and disadvantages. A photogrammetry is an excellent option for capturing highly detailed images and producing accurate 3D models. It is also cost-effective and can be used in a variety of environments. However, photogrammetry can be affected by factors such as wind, sunlight, and shadows, which can affect the accuracy of the results.

LiDAR surveying, on the other hand, is an excellent option for capturing data through vegetation and creating accurate 3D terrain models. It is also unaffected by factors such as wind or sunlight, making it a more reliable option for surveying specific environments. However, LiDAR equipment can be more expensive, and data processing can be more time-consuming.

LiDAR- How Does It Work?

LiDAR emits laser pulses, which bounce off objects and return to the drone, where they are recorded. The time it takes for the laser pulse to return is used to calculate the distance between the drone and the object. A highly accurate 3D model of the environment can be created by capturing multiple laser pulses from different angles.

Advantages Of LiDAR You Must Know

LiDAR has several advantages over photogrammetry. For example, LiDAR is not affected by factors such as sunlight or shadows, which can affect the accuracy of photogrammetry. LiDAR can also penetrate vegetation, making it a great option for surveying forests or other areas with dense foliage. In addition, LiDAR surveying can capture highly detailed data at high speed, making it a great option for large-scale surveying projects.

Photogrammetry vs. LiDAR: Which One To Choose?

So which technique is better for aerial data capture, photogrammetry or LiDAR? The answer to that question depends on various factors, including the type of environment being surveyed, the accuracy required, and the budget available for the project.

Photogrammetry is generally a more cost-effective option, and you can use the same in a variety of environments. However, it may not be as accurate as LiDAR in certain situations and can be affected by factors such as wind or shadows.

LiDAR surveying, on the other hand, is more expensive and can be more time-consuming to process the data. However, it can capture highly accurate data in various environments, including areas with dense vegetation.

LiDAR- When To Use It?

LiDAR is generally a better option when highly accurate data is required or when surveying an area with dense vegetation. It is also the best option for large-scale projects to capture data quickly and efficiently.

Photogrammetry's Advantages- What You Must Know?

• Cost-effective: Photogrammetry is generally less expensive than LiDAR, making it a more accessible option for many surveying projects.

• High-resolution Imagery: Photogrammetry can produce high-resolution imagery that captures detailed information about an area, including texture and color.

• Flexible: Photogrammetry can be used in multiple environments and is not limited to areas with dense vegetation.

Photogrammetry- When To Use It?

Photogrammetry is generally a better option when the cost is a concern or when surveying an area that does not have dense vegetation. You can also use it to capture high-resolution imagery and utilize it for visual inspections, mapping, or creating 3D models of an area.

Photogrammetry is also practical when conducting historical surveys or capturing data over time. However, there may be better options for capturing highly accurate data or surveying areas with challenging environmental factors such as wind or shadows.

Take the Final Call

If you are still confused about choosing the surveying option, you can ask Carroll Surveying and Mapping in Oklahoma. Our team of experts will guide you through the LiDAR surveying ways and why you should go for it. Place your requirements to us as soon as possible.