Posted by
Yongqiang Chen on
Nov 12, 2019; 8:08am
URL: http://imagej.273.s1.nabble.com/Can-anybody-provide-some-experts-s-insight-in-this-tough-image-tp5022653p5022660.html
Hi Stein,
What is your image size, sample size,
The resolution of this image is 1.9628 um per pixel. Image size is around 2 mm in diameter. Sample is a cylindrical mini-core plug with diameter of 4.67 mm and length of 14.63 mm drilled from a Berea sandstone plug. It is with a high concentration Fe in the sample mineralogy.
acceleration voltage, current, filtering, number of projections, source to detector and source to sample distance?
Acceleration voltage is 80 kV. They did not provide the current value and other information.
I can only find the above information. Please take a look and Look forward to expert's advice.
Thanks,
Yongqiang
-----Original Message-----
From: Stein Rørvik <
[hidden email]>
Sent: 11 November 2019 16:57
To:
[hidden email]
Subject: Re: Can anybody provide some experts's insight in this tough image.
It appears that you have X-Ray imaging artefacts because your sample is extending outside your field of view. When you do tomography, there must always be clear space at the left and right side of the sample at all rotation angles. Try redoing your scan at a lower magnification (zoom out).
It is always better to improve your imaging in the first place than trying to post-correct artefacts on poor quality images!
There is also no metadata in this image. What is your image size, sample size, acceleration voltage, current, filtering, number of projections, source to detector and source to sample distance? I could give advice on how to improve the imaging conditions if you provide this. There should be some file in the folder together with the images describing the imaging conditions.
What is your material? A porous rock, or a man-made composite?
Stein
-----Original Message-----
Sent: 11. november 2019 11:41
To:
[hidden email]
Subject: Can anybody provide some experts's insight in this tough image.
Hi ImageJ experts,
I did a Micro-CT scanning before using an in-house CT machine (ZEISS Xradia 500 Versa). It shows a strong artefact. I tried many methods to reduce these effects but failed. Can anybody kindly provide some help with this image?
Thank you very much.
Yongqiang
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