Who Wins the Battle Between 3D Photogrammetry and 3D Laser Scanning?

Who Wins the Battle Between 3D Photogrammetry and 3D Laser Scanning?

If you're planning a VR/AR project or simply need 3D models, deciding between 3D Photogrammetry and 3D Laser Scanning can be difficult. Actually, the definitions and implementations aren't that tough to understand, so take a cup of tea and keep reading!
What is 3D Photogrammetry, exactly?

Let's start with a description. Photogrammetry is a technique for extracting shape measurements and other 3D information from photographs. Digital photogrammetry works by photographing items from various angles and locations using a standard digital camera and then allowing the device to detect overlapping patterns to produce a 3D reconstruction of the captured model.

Simply explained, the procedure comprises capturing a series of shots from various angles of an object — on average, 95 shots of one object — and then submitting them to software that converts photographs into 3D models (such as Autodesk ReCap, Agisoft Photoscan, and RealityCapture). By comparing pixel colours and identifying anchor points, photogrammetry software evaluates and builds 3D models of a wide range of artefacts.

3 Dimensional Laser Scanning

There are now 3D scanners. These are gadgets that use infrared light projection to scan objects and generate metric data. Laser scanners gather plane data by aiming a laser beam onto the surface and then turning the information into a point cloud.

3D Photogrammetry: Benefits and Drawbacks, as well as Applications

For starters, photogrammetry is a low-cost technology. To digitally duplicate object types using photogrammetry, you'll need a camera and a well-lit filming environment. Whether the target is human or animal, multi-camera systems are carefully positioned in a studio.

Photogrammetry enables real-time data capture, which is extremely beneficial for highlighting the finest details of the body. And, unless the object moves quickly, the final result and appearance are unchanged if the subject moves slightly.

A custom-made device, on the other hand, must be built in a studio setting, which can be difficult to organise. Shooting must be done correctly or else you will fail. Furthermore, photogrammetry methods are unable to capture translucent, glossy, flat, or one-color objects due to a lack of detectable visual patterns.

As a result, for bodies with smooth, shiny, and featureless surfaces, photogrammetry should be avoided. In actuality, this is the single significant disadvantage of photogrammetry that can be easily solved. You must muck up the surface so that it is no longer shiny. If you are not allowed to modify the subject's surface, a 3D scanner is a better choice.

In general, photogrammetry is beneficial for creating 3D representations of everyday things, persons, topographic mapping, and geology.

Academic Master is a US based writing company that provides thousands of free essays to the students all over the World. If you want your essay written by a highly professional writers, then you are in a right place. We have hundreds of highly skilled writers working 24/7 to provide quality  essay writing services  to the students all over the World.

3D Laser Scanning: Benefits and Drawbacks, as well as Applications

3D scanning, on the other hand, may be utilised on items of any colour and shape and is unaffected by lighting or body movement. Laser scanning works in the dark and can be used to search caverns or any other location where the sun does not shine. Take, for example, scanning engineering artefacts or pipe connections. It would be practically hard to take the appropriate number of pictures of all sections from all angles. To obtain the same result as a single 3D scanner, a photogrammetry room will most likely require hundreds of cameras.

Another advantage of 3D scanning over photogrammetry is improved resolution and precision. As a result, facial features acquired with a 3D scanner, as well as clothing details, are more likely to be realistic and lifelike. Despite this, most consumer 3D scanners can only scan details 1 to 2 mm in size, so if your topic has attributes smaller than that, photogrammetry is the way to go.

Let us now consider the disadvantages. It is important to perform a few scans because the results of consumer 3D scanners can be of low quality at times. Define the mesh density and coordinate the specs with the programme to achieve a faultless finish. Laser scanning is best suited for medium-sized objects, but not for little or exceptionally big ones.

Another problem is the prohibitively high cost of 3D scanners. As a result, if photogrammetry can be used to scan the object, do so.

Laser scanning is most widely employed in the construction and civil engineering industries, throughout the design phase (especially when dealing with difficult parts and shapes), in real estate, and for cultural heritage purposes.

In conclusion

3D photogrammetry and laser scanning are both excellent technologies, although they serve different purposes. Overall, understanding the requirements and applications is essential when picking between photogrammetry and 3D scanning.

However, the technology you can utilise is entirely up to you. Please post any queries in the comments section.For More amazing articles, please visit my articles