Posted by
Herbie on
Oct 22, 2019; 7:37am
URL: http://imagej.273.s1.nabble.com/rendering-a-3D-image-from-side-views-only-tp5022558p5022561.html
Good day!
As a follow-up regarding "tomographic reconstruction", i.e. "image
reconstruction from projections", proposed on the IJ-Forum, I should
like to mention that "tomographic reconstruction" is *not* applicable in
the described case because there are no projections but only side views
of the visible (reflected light) structures. From the latter it is
impossible to obtain "tomographic reconstruction".
Regards
Herbie
::::::::::::::::::::::::::::::::::::
Am 21.10.19 um 23:47 schrieb Herbie:
> Sorry it must read:
>
> z > N * π * 0.5
>
> Regards
>
> Herbie
>
> ::::::::::::::::::::::::::::::::::::
> Am 21.10.19 um 23:29 schrieb Herbie:
>> Good day!
>>
>> This post was cross-posted to the IJ-Forum:
>> <
https://forum.image.sc/t/3d-model-without-stacks/30598>
>>
>> If you think of tomographic reconstruction you must specify the
>> maximum number N of linear independent resolution elements across the
>> diameter of your top view. Given this number, the minimum number of
>> angle increments z that is necessary for the adequate reconstruction
>> of z-slices is:
>>
>> z > N * π * 0.5
>>
>> I don't think that 360 / z = 10deg will be sufficient.
>>
>> Regards
>>
>> Herbie
>>
>> :::::::::::::::::::::::::::::::::::::::
>> Am 21.10.19 um 22:38 schrieb BananaBoy:
>>> Hi, I'm pretty new to imageJ and image analysis in general but I have a
>>> question that I cannot seem to find a clear answer to which is the
>>> following:
>>>
>>> I would like to construct a 3D model of a plant's root system by
>>> taking side
>>> views (and potentially a top view) images. For obvious reasons, I cannot
>>> create a stack of slices along the vertical axis. Is this possible?
>>>
>>> For example, I could create a setup where the plant is at a fixed
>>> position
>>> from the camera (with naked and clean roots hanging in the air). I could
>>> then rotate the plant 360 degrees in increments of 10 degrees, so 35
>>> pictures in total.
>>>
>>> Is ImageJ capable of rendering a 3D model of this root system?
>>>
>>>
>>> Thank you.
>>>
>>>
>>>
>>> --
>>> Sent from:
http://imagej.1557.x6.nabble.com/>>>
>>> --
>>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>>>
>>
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>
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