4.15.4. Photogrammetric software

There are several specialized software for photogrammetry, which could be used to analyze the 2D images captured by photogrammetric camera. Mapping or the surface creation process is also done with these photogrammetry software.

Photogrammetric software is essential for analyzing images taken by cameras designed for photogrammetry. These tools help transform captured two-dimensional photographs into three-dimensional models or maps. This is a crucial step in mapping processes, where the software does the heavy lifting of analyzing and interpreting the images to recreate the physical surfaces and topography of the earth.

Imagine a chef who uses various kitchen tools to create a dish. Just as a chef needs knives, pots, and pans to prepare a meal, photogrammetrists rely on specialized software to turn aerial images into useful maps and models.

The software can be categorized into two classes; (a) Free source, and (b) Commercial software.

Photogrammetric software comes in two primary categories: free and commercial. Free software options, such as MicMac or Meshroom, provide basic functionalities for users who may not have a budget for expensive tools, making photogrammetry more accessible. Commercial software, on the other hand, usually offers a more robust feature set and customer support, catering to professional needs.

Think about how there are both free and premium photo-editing apps available. Free apps may have essential features to edit photos, while premium apps often include advanced tools that meet professional or business requirements, similar to how free photogrammetric software gives access to basic 3D modeling tools compared to commercial options.

A comparison of some of the photogrammetry software is presented in Table 4.2.

Table 4.2 provides a comparison of various photogrammetric software in terms of quality, speed, features, and user-friendliness. This helps potential users to choose software based on what they need most—whether it's speed of processing, ease of use, or specific features for advanced tasks.

Imagine you're shopping for a smartphone. You might compare different models based on camera quality, battery life, and ease of use before deciding on which one suits your needs best. Similarly, when choosing photogrammetric software, you should compare these key attributes to find the right fit for your projects.

Some examples of free source software include MicMac, Meshroom, Visual SFM, and others, with descriptions of their features and applications.

Free source photogrammetric software options like MicMac and Meshroom provide powerful tools for 3D modeling and reconstruction from images. These software packages cater to different needs, from environmental studies to artistic projects, enabling a variety of users to engage with photogrammetry without financial investment.

It's like having access to a public library where you can borrow books for free. Just as those books provide valuable knowledge without cost, free software allows access to essential tools for photogrammetry without requiring payment, enabling anyone interested to learn and apply these techniques.

Commercial software, like Autodesk ReCap or Reality Capture, offers advanced features and support for professional use.

Commercial photogrammetric software typically provides extensive features that cater to professional needs, such as processing large datasets or integrating with other industrial applications. These tools may require a purchase or subscription, but they often come with enhanced capabilities, customer support, and regular updates.

Consider hiring a personal trainer at a gym compared to working out on your own. While it's possible to maintain fitness alone, having a trainer—just like using premium software—provides expert guidance, structured workouts, and specialized knowledge to achieve your goals more efficiently.

Various examples are given along with their specific uses, showcasing the range of applications for different software.

Different photogrammetric software packages are specialized for various tasks. For instance, some may excel at creating 3D models from drone imagery, while others focus on mapping or integrating with GIS systems. Recognizing these specialties helps users select appropriate software for their specific project needs.

This is similar to using specific tools for different tasks—like a screwdriver for screws and a hammer for nails. Just as you would choose the right tool for repairing something at home, selecting the right photogrammetric software demands understanding the unique tasks that each software excels at.

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