Some 3D models

JH · Post by JH » Sun Apr 01, 2018 12:21 pm

I have done some 3D models, click on the links to view the models at Sketchfab.

Best regards
Jörgen Hellberg

https://skfb.ly/6xssD

https://skfb.ly/6wHWP

https://skfb.ly/6x8SS

https://skfb.ly/6uSI9

Smokedaddy · Post by **Smokedaddy** » Sun Apr 01, 2018 1:18 pm

Excellent, nice website too. What sort of physical 'setup' is needed to make shoot the orchid? I'm not asking about the software.

Regards,
-JW:

zzffnn · Post by **zzffnn** » Sun Apr 01, 2018 3:35 pm

Very nice! Thank you for sharing.

I would ask the same question that JW asked, plus how many photos were needed.

JH · Post by JH » Mon Apr 02, 2018 1:20 am

Thanks for the nice comments, and for asking.

For the Orchid I used a small camera (Olympus tg-4) to be able to place the camera close enough to cover all details. I took 386 in camera focus stacked pictures (resolution only 2400 x 3200). The camera saves the stacked picture and the first picture in the 8-picture stack. My first attempt was with al 772 pictures (stacked and first frames). This worked so I did not try to use the subsets, but my guess is that you can do this without stacking with a mobile phone.

Normally I use a Canon 5d II and try to choose distance and f value to have the entire subject in focus. The difference between the tg-4 and the 5D II is not so much in the quality of the 3D model but in the quality of the picture, have a look at this Elastolin figure for an example.

Olympus tg-4 https://skfb.ly/6wPZX
Canon 5D II https://skfb.ly/6x8SS

I use Agisoft Photoscan, the new masking options that came a few months ago is a huge help.
http://www.agisoft.com/index.php?id=48

Best regards Jörgen Hellberg

Camera positions:

zzffnn · Post by **zzffnn** » Mon Apr 02, 2018 12:49 pm

Amazing work! How did you determine those various camera positions and angles, and what /where to photograph next? Did the 3D modeling software tell you? Thank you again!

JH · Post by JH » Mon Apr 02, 2018 1:20 pm

zzffnn wrote:Amazing work! How did you determine those various camera positions and angles, and what /where to photograph next? Did the 3D modeling software tell you? Thank you again!

Normally max 10 degrees between every picture. For an object that can be turned I usually do three circles and more than 110 pictures. My experience is also that every point on the subject should be on at least 3 photos. The orchid had a lot of “hidden” areas therefore the high number of pictures.

Best regards
Jörgen Hellberg

165 photos 3 circles