Author Topic: Nut-o-grammetry  (Read 32746 times)

2022-11-17, 23:06:05
Reply #75

LuckyFox

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This batch of scans has some nice macro scans: sunflower seed, nutmeg and clove.

2022-11-18, 09:46:09
Reply #76

romullus

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Nice scans as usual. I wonder how on earth you manage to photoscan things as small as sunflower seeds? I find it's hard to keep most of the subject in focus when shooting anything smaller than a fist, even with my smaller sensor camera. Do you do focus bracketing?
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2022-11-18, 18:32:32
Reply #77

LuckyFox

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Nice scans as usual. I wonder how on earth you manage to photoscan things as small as sunflower seeds? I find it's hard to keep most of the subject in focus when shooting anything smaller than a fist, even with my smaller sensor camera. Do you do focus bracketing?
Thanks, romullus! That's right - focus stacking.

2022-11-18, 18:45:37
Reply #78

romullus

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I see, that must take helluva lot more time and effort to scan compared to usual turntable session, isn't? Perhaps you have some automated system to take photos for you?
I'm not Corona Team member. Everything i say, is my personal opinion only.
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2022-11-18, 18:58:02
Reply #79

LuckyFox

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I see, that must take helluva lot more time and effort to scan compared to usual turntable session, isn't? Perhaps you have some automated system to take photos for you?
Much more time and much much more data to process)

2022-11-18, 21:55:03
Reply #80

romullus

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I admire your dedication then :]
I'm not Corona Team member. Everything i say, is my personal opinion only.
My Models | My Videos | My Pictures

2022-11-23, 22:27:55
Reply #81

LuckyFox

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I admire your dedication then :]
Thanks a lot romullus!
And here is a next batch of 9 scans. 2 tough ones I had to deal with: potato chip - thin, translucent and fragile and second toughie was the truffle - little did I know it shrinks(dries) as it is exposed to air and heat from the lamp. Shapeshifting is a kick in the nuts for photogrammetry. Speaking of nuts - the almond that is mostly one plain color was tricky as well to get right. Currently running a Black Friday Promo on RonenBekerman with 50% discount on all my scans, be sure to check it out as it starts in 2 days!

2022-12-02, 09:35:16
Reply #82

LuckyFox

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More macro-photogrammetry this time, and a carrot that I grew in my garden.

2022-12-12, 01:08:30
Reply #83

LuckyFox

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Back to the roots of this thread, 6 years ago my 1st successful scans were walnuts. I decided to go a bit bigger this time and use 400mpx of pixel shift shots to see what comes out.
6144 total shots compiled into 384 pixel-shifted composites which resulted in 64(4 orbits of 16) focus stacked inputs for RC.
Resolution 23264x17448, that's roughly 400 Mpx - a sample of such is available here: https://we.tl/t-L2OW7qTown. 310mln mesh resulted from quite quick RC calculation, which cost me just 2186 credits(~5$).
My takeaways from this: a lot of data, the whole processing of it takes so much longer than photogrammetry scan itself and post. I doubt pixel shift added all that much quality result in respect to regular 100Mpx of GFX100S - and there are lots of chromatic aberrations and/or pixelshift artifacts.
Even though I shot in a static place on a sturdy tripod fuji's pixel shift combiner software was complaining that it registered some movement, just a dozen of shots came without warning, but there was no much sharpness difference in them either.

2023-01-08, 21:21:59
Reply #84

LuckyFox

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Start the week with some vroo...yumm!
https://www.instagram.com/zb_vision/
« Last Edit: 2023-01-09, 00:15:16 by LuckyFox »

2023-01-12, 22:36:22
Reply #85

LuckyFox

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2022 was quite productive: a total of 222 food scans released. Here are some from late December:

2023-01-16, 12:37:04
Reply #86

LuckyFox

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These are the last scans from 2022. Particularly proud of the coffee bean scan.

2023-01-20, 18:38:59
Reply #87

mferster

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That coffee bean is bonkers. What are the size of your images that you can get that kind of fidelity.

2023-01-21, 00:40:45
Reply #88

LuckyFox

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That coffee bean is bonkers. What are the size of your images that you can get that kind of fidelity.
Thanks! Lately shooting with GFX100S+120mm macro lens and focus stacking. 11646x8734
Will use this occasion to post some fresh scans from January:


2023-01-30, 10:01:22
Reply #89

LuckyFox

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Already one month gone from 2023, here is a new batch of scans from end of January.