3Dflow Academy - Videotutorial 2 - photography for photogrammetry

[@LeeMayren]

Great video! Can't wait for more. Just started in photogrammetry and your tutorials are super clear and easy to follow. I'm also very happy with the results of 3DF Zephyr. Really good software!

[@_MGPz]

Still Relevant! Such a great and informative tutorial guys. Thanks so much!

[@frankheinrichmaier277]

A very good Video ! 🤗👍

[@jurgenvantomme]

Very interesting and helpful video

[@sierraecho884]

Your Software is great and you guys are super nice and helpful through E-Mail. Can you please maybe make an other video with an in depth explanation of the use of a projector for noise pattern. I would like to capture indoor and the walls are very uniform in texture. I would like to use the projector method. Do you have a recommendation for that ?

[@Bala92635]

Shall we use green chroma background

[@Ajadhaam]

Joder macho, sois la leche! Muy bueno.

[@Nitram-xw9ei]

How does ISO noise affect the reconstruction and the texturing? Does Zephyr apply any kind of noise filtering to the images at all?

[@3DflowChannel]

Hi Nitram! ISO noise should be avoided, as it will make everything harder for zephyr (and in fact, you may see it in your textures as well). If you're dealing with very noisy image, sometime it's better to user lower presets (e.g. fast or default) or even using the advanced settings to change the resolution parameter, as that will mitigate the impact of the noise. There is no pre-processing of the images, so make sure to feed the best images you can :)

[@Nitram-xw9ei]

@@3DflowChannel Thanks for the feedback. I was shooting in a darkish forest the other day, so I had to crank up the ISO to get anything. I'll run them through Lightrooms default noise settings and see if that helps.

[@3DflowChannel]

@@Nitram-xw9ei generally speaking it's better to not pre-process the images, as it may change significantly the features of the images - so be wary of that! In dark settings, consider using a tripod and a remote.

[@Nitram-xw9ei]

@@3DflowChannel I did that too at the end of my shoot. I have a mixed batch of images so I have enough to play with and see what my results are like. Thanks for the tips.

[@3DflowChannel]

​@@Resdim Hi! You can change color balancing if you are having big texturing issues, otherwise it's better to directly change the texturing parameters. Sharpening may remove or alter image features so generally it would be better to not use it. Also note that raw files (including NEF) have a higher memory footprint and will make the process slower, we suggest converting them to JPG - raw files won't give you better results as the pixel level quality difference is not significant. Raw files are generally used only when you need to generate a 32 bit texture.

[@marzeageorgian]

Well done. Very nice and tutorial with useful and reliable information. I will wait for more.

[@3DflowChannel]

thank you :) more are coming soon :)

[@AkraStudios]

We love it, great job guys!

[@musictaster9339]

Very nice tips! I try to scan human heads - it's tricky if you don't have the expensive rig with many cameras, because you need to be fast, so the subject doesn't move too much between shots. So in my case (I only have a P30 Pro as a camera, but it's quite ok) I record a 4k video by stabily moving around the head, since that's faster than taking photos. Then the Zephyr can extract frames from it. It works quite nice, but you need to set up a good, even lighting. I'll try a softbox or a ring light soon. I'm still on the free version (50 frames limit), but it seems enough for a partial head scan. Do you have any tips on how to improve head scanning process when being an indie without the expensive multi-camera rig? Is there something that I could improve in my workflow? I'm just starting. Thanks!

[@3DflowChannel]

Hi MusicTaster! You're probably doing already all you can do with the equipment you have - make sure the subject is in focus (eventually play with the autofocus feature of your camera to find the best setting) and that there are no direct lights/shadows. Human scans are hard to do, so probably the most critical thing is to have the capture done as fast as possible so that the subject doesn't move. Make sure to give proper support to your subject (e.g. a chair with a hard back, eventually with neck/head support) so that they can be very still. If you want to share your photos with us at [e-mail] we'll be happy to take a look and give you more specific advice!

[@blackout1111]

Spin someone sitting centered in an office chair is an easy one

[@joboyogi]

Can Zephyr handle the model being on a turntable? What I want to capture to a 3d model is very small and spinning the piece on a turntable seems like it would result in sharper and more consistent photos.

[@3DflowChannel]

Hello joboyogi! Absolutely! Here is a quick tutorial www.3dflow.net/technology/documents/3df-zephyr-tutorials/tutorial-12-masking-for-turntable/

[@frank74bestmovieclips]

Excellent video, thank you very much!

[@teamdevelopers1748]

what is the camera name ?

[@3DflowChannel]

It's a Canon 1100D :)

[@user-dj1nx9xf8i]

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