3DF Zephyr Photogrammetry

Ok so we keep running into that NVIDEA CUDA requirement but a vast amount of laptops only have intel or AMD graphics. This is a big problem but hey there is 3DF Zephyr which is free for personal use and is not too expensive if you go pro.

First of all the free version is only allowing 50 pictures or frames but its enough to learn and if you need more then 150 euros gets you the next level for up to 500 images or frames. The next two pricing tiers turn this software into a onestop shop for all photogrammetry and laserscan processing but it would need trialing well to warrant the expense.

Here though we are testing the basic free version on a Win10 laptop with an intel I5-4310 2.6GHz CPU with 8GB of Ram and Intel 4000 Graphics.

The Pictures have been taken with a Nikon D3200 DSLR 24 Megapixel which has now been replaced by the D3500 and can be seen here on amazon.

Ok so while typing, I have been processing a batch of photos of a memorial Trough in 3DF Zephyr (free). It took about 5 mins to install from the website https://www.3dflow.net/3df-zephyr-free/

Once installed Click File -> New Project

This will open a dialogue to upload pictures or video, remember free version is limited to 50 frames or pictures so if using a video capture camera, maximise your settings for quality as you want the most ammount of pixels in your frame. Even still you are likely to get less than 12 frames per second (standard is 24fps) so at slowest it is about 4 seconds of video. Alternatively there are many open source programs or free to use like VLC or OpenShot that will convert your video to images but some have had issues with the correct codec being recognised from their device which then requires the video converting in handbrake first but there is alway free video to JPG Converter which will work on most codecs and is simple to use although I did lose all EXIF and GPS data when I tried it. This can be a problem if creating automated Geolocated point clouds or mesh, which will require manual geolocation.

Once the images have been selected,you need to tell the software how they were taken, I took these stnading up in an Urban environment so I selected Urban with standard everything. I then click next and select what the output process will be, I selected everything as I want to export a mesh for modelling so I have to have a Dense Point cloud first. Then hit Run which is at the top of the page.

Needless to say it took a while, approx 1.5 hours, but was fully automated. I did note that it took 85% disk buffer and kept peaking out at 100% memory and CPU. Even though, it only used 15 images (called Cameras) out of the 30 selected images. This has led to issues with the final render but the below is the video of Generated Sparse Point Cloud, Dense Point Cloud, Mesh, Textured Mesh.

The results Were good considering it did not use any of the images from the back side so I think the next thing to try is a video and select the images more carefully from that.

I hope this was a good intro to 3DF Zephyr and lets try and find out how to improve the reliability of completed model output. I believe that it is in the technique so shall devote a little time to this and share when I have the answer / method.

10 thoughts on “3DF Zephyr Photogrammetry”

  1. I’m not sure why but this site is loading incredibly slow for me. Is anyone else having this issue or is it a problem on my end? I’ll check back later and see if the problem still exists.

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  2. Thankyou for the feedback. I will be updating with more software soon and have been trialing some android on the fly photogrammetry software with 2 phones with vastly differing results so please follow as I will release this soon.

    Like

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