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Geotag Images from Any GNSS Device with REDtoolbox: A Comprehensive Guide





Download Redtoolbox: A Powerful Software for GNSS PPK and Geotagging




If you are looking for a software that can perform a highly accurate GNSS postprocessing PPK and geotagging of your drone or terrestrial images, you should download Redtoolbox. Redtoolbox is a software developed by REDcatch GmbH, a company that specializes in surveying using direct georeferencing technique from drone images. In this article, we will explain what Redtoolbox is, what it can do, how to download and use it, and why you should choose it for your projects.




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What is Redtoolbox and what can it do?




Redtoolbox is a software that performs a multi-constellation (GPS, GLONASS, Beidou, Galileo) and multichannel (L1, L2, L5) GNSS postprocessing PPK of Base-Rover configurations. Such configurations can be found in many UAV / drone applications and terrestrial 3D ImageVector device. The software can also geotag your images with the corrected GNSS path accuracy at centimeter level. Depending on the device use, the current satellite constellation and receipt quality.


Perform a multi-constellation and multichannel GNSS postprocessing PPK of Base-Rover configurations




A Base-Rover configuration is a setup where you have a base station that records the GNSS signals at a known location and a rover that records the GNSS signals at an unknown location. The rover can be a drone or a terrestrial device that carries a camera. By comparing the signals from both devices, you can calculate the precise position of the rover relative to the base station. This process is called GNSS postprocessing PPK (post-processed kinematic).


Redtoolbox can perform this process using multiple constellations (GPS, GLONASS, Beidou, Galileo) and multiple channels (L1, L2, L5) of GNSS signals. This means that it can use more satellites and frequencies to improve the accuracy and reliability of the results. The software can also handle different formats of RINEX data (the standard format for GNSS data) such as RINEX 2.x or RINEX 3.x.


Receive centimeter accurate image coordinates for direct georeferencing




After performing the GNSS postprocessing PPK, Redtoolbox can geotag your images with the corrected GNSS path accuracy at centimeter level. Geotagging means adding location information to your images such as latitude, longitude, altitude, pitch, roll, yaw, etc. This information can be used for direct georeferencing, which means that you can use the image coordinates to align and scale your images in photogrammetry software without using ground control points (GCPs) or manual measurements.


Redtoolbox can output the geotagged images as plain text files, as image EXIF data (the metadata embedded in image files), or as native files for photogrammetry software such as Agisoft Metashape (.pos), Pix4d Mapper (.p4d), RealityCapture (.csv) and more. You can also view the geotagged images on a map and check the accuracy and quality of the results.


Use output directly in photogrammetry software like Agisoft Metashape, Pix4d Mapper, RealityCapture and more




One of the main advantages of using Redtoolbox is that you can use the output directly in photogrammetry software without any additional steps. Photogrammetry is the process of creating 3D models from 2D images using computer vision and geometry. Photogrammetry software such as Agisoft Metashape, Pix4d Mapper, RealityCapture and more can use the geotagged images from Redtoolbox to create accurate and realistic 3D models of your survey area.


By using direct georeferencing technique, you can save time and money by avoiding the need for ground control points (GCPs) or manual measurements. You can also improve the accuracy and quality of your 3D models by using more images with higher resolution and better overlap. Redtoolbox can help you achieve these benefits with its powerful GNSS PPK and geotagging features.


How to download and use Redtoolbox?




If you are interested in using Redtoolbox for your projects, you can download it from the official website or buy a license key. The software is compatible with Windows 10 operating system and requires a minimum of 8 GB RAM and 10 GB free disk space. You can also try the software for free for 14 days with some limitations.


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Download Redtoolbox from the official website or buy a license key




To download Redtoolbox, you need to visit the official website of REDcatch GmbH at There you can find more information about the software, the company, the products and the services they offer. You can also contact them for any questions or inquiries.


To use Redtoolbox, you need to buy a license key that matches your device model and usage. There are different license options available such as single device, multi device, annual or perpetual. You can also choose between standard or professional versions depending on your needs. The prices range from 499 to 2999 per year. You can buy the license key online or offline through their partners.


Run Redtoolbox software and select your drone or device model




After downloading and installing Redtoolbox, you need to run the software and select your drone or device model from the list. The software supports many drones and devices from different brands and models such as DJI Phantom 4 RTK, DJI Mavic 2 Pro RTK, REDcatch ImageVector, Emlid Reach RS2, Septentrio AsteRx-m2 UAS, Trimble R10 GNSS Receiver and more. You can also add your own custom device if it is not in the list.


Load your RINEX data and trigger file from your survey




The next step is to load your RINEX data and trigger file from your survey. The RINEX data is the raw GNSS data recorded by your base station and rover during your survey. The trigger file is the file that contains the information about when each image was taken by your camera. You need to have both files in order to perform the GNSS PPK processing and geotagging.


You can load your RINEX data and trigger file by clicking on the "Load Data" button on the main window of Redtoolbox. You need to select the folder where your files are located and choose the correct file format for each file. The software will automatically detect the file names and types based on their extensions. You can also rename or edit your files if needed.


Run GNSS PPK processing and geotagging with only a few clicks




The final step is to run the GNSS PPK processing and geotagging with only a few clicks. You can do this by clicking on the "Process" button on the main window of Redtoolbox. The software will start processing your data and show you a progress bar and a log window with detailed information about each step.


The GNSS PPK processing will calculate the precise position of your rover relative to your base station using multiple constellations and channels of GNSS signals. The geotagging will add location information to your images with centimeter level accuracy using direct georeferencing technique. The whole process will take only a few minutes depending on the size of your data set.


Export your results as plain text, image EXIF data or native files




After completing the GNSS PPK processing and geotagging, you can export your results as plain text files, as image EX IF data (the metadata embedded in image files), or as native files for photogrammetry software such as Agisoft Metashape (.pos), Pix4d Mapper (.p4d), RealityCapture (.csv) and more. You can do this by clicking on the "Export" button on the main window of Redtoolbox. You need to select the folder where you want to save your files and choose the output format for each file. The software will automatically generate the files with the correct names and extensions.


You can also view your results on a map and check the accuracy and quality of the geotagging. You can do this by clicking on the "Map" button on the main window of Redtoolbox. You will see a map with your geotagged images and their coordinates. You can zoom in and out, pan, rotate, and switch between different map layers. You can also see the statistics of your results such as number of images, number of satellites, RMS error, etc.


Why choose Redtoolbox for your projects?




Redtoolbox is a powerful software that can help you perform a highly accurate GNSS postprocessing PPK and geotagging of your drone or terrestrial images. But why should you choose Redtoolbox over other software or methods? Here are some of the reasons why Redtoolbox is the best choice for your projects:


Compatible with many drones and devices from different brands and models




Redtoolbox supports many drones and devices from different brands and models such as DJI Phantom 4 RTK, DJI Mavic 2 Pro RTK, REDcatch ImageVector, Emlid Reach RS2, Septentrio AsteRx-m2 UAS, Trimble R10 GNSS Receiver and more. You can also add your own custom device if it is not in the list. This means that you can use Redtoolbox with any device that can record GNSS signals and images.


Professional support and assistance from the developers




Redtoolbox is developed by REDcatch GmbH, a company that specializes in surveying using direct georeferencing technique from drone images. The developers have years of experience and expertise in this field and they are always ready to help you with any issues or questions you may have. You can contact them through email, phone, or online chat. They also provide online tutorials, videos, manuals, and FAQs to help you learn how to use the software.


Affordable price and free trial option




Redtoolbox is available at an affordable price and you can choose between different license options depending on your device model and usage. You can also try the software for free for 14 days with some limitations. This way, you can test the software before buying it and see if it meets your expectations and needs.


Conclusion




In conclusion, Redtoolbox is a powerful software that can perform a highly accurate GNSS postprocessing PPK and geotagging of your drone or terrestrial images. It can use multiple constellations and channels of GNSS signals to improve the accuracy and reliability of the results. It can also output the geotagged images as plain text files, as image EXIF data, or as native files for photogrammetry software such as Agisoft Metashape, Pix4d Mapper, RealityCapture and more. You can also view your results on a map and check the accuracy and quality of the geotagging.


If you want to download Redtoolbox, you can visit the official website of REDcatch GmbH at or buy a license key online or offline through their partners. You can also try the software for free for 14 days with some limitations.


Redtoolbox is compatible with many drones and devices from different brands and models such as DJI Phantom 4 RTK, DJI Mavic 2 Pro RTK, REDcatch ImageVector, Emlid Reach RS2, Septentrio AsteRx-m2 UAS, Trimble R10 GNSS Receiver and more. You can also add your own custom device if it is not in the list.


Redtoolbox is developed by REDcatch GmbH, a company that specializes in surveying using direct georeferencing technique from drone images. The developers have years of experience and expertise in this field and they are always ready to help you with any issues or questions you may have.


Redtoolbox is available at an affordable price and you can choose between different license options depending on your device model and usage.


FAQs




Here are some of the frequently asked questions about Redtoolbox:


What is direct georeferencing?




Direct georeferencing is a technique that uses the image coordinates to align and scale your images in photogrammetry software without using ground control points (GCPs) or manual measurements. This technique can save time and money by avoiding the need for GCPs or manual measurements. It can also improve the accuracy and quality of your 3D models by using more images with higher resolution and better overlap.


What is RINEX data?




RINEX data is the raw GNSS data recorded by your base station and rover during your survey. RINEX stands for Receiver Independent Exchange Format and it is the standard format for GNSS data. RINEX data contains information such as time, satellite, signal, frequency, etc. You need to have RINEX data in order to perform the GNSS postprocessing PPK and geotagging.


What is a trigger file?




A trigger file is a file that contains the information about when each image was taken by your camera. A trigger file can be generated by your device or by a third-party software. A trigger file can have different formats such as .csv, .txt, .log, etc. You need to have a trigger file in order to perform the GNSS postprocessing PPK and geotagging.


How long does it take to process and geotag my images?




The processing and geotagging time depends on the size of your data set, the quality of your GNSS signals, and the performance of your computer. Generally, it takes only a few minutes to process and geotag your images with Redtoolbox. However, if you have a large data set or a poor GNSS signal quality, it may take longer.


How can I check the accuracy and quality of my results?




You can check the accuracy and quality of your results by viewing them on a map and checking the statistics of your results such as number of images, number of satellites, RMS error, etc. You can also compare your results with ground control points (GCPs) or manual measurements if you have them. You can also use photogrammetry software to create 3D models from your geotagged images and check the accuracy and quality of your 3D models. 44f88ac181


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