wire cross section diameter measurements.
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wire cross section diameter measurements.
 
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Hi all,
I would like to measure the diameter/radius to determine the circularity of the wire cross-section. Each image contains only one cross-section. I have tried this by the particle analysis in ImageJ but only find the Feret diameter. Meaning is I want to have the measurements done thru the center of mass/gravity and by a step I can define, for ex. every 10° or n radians. Is there a plugin available for doing this. Thanks in advance for your help. Kindest regards, Martin. ::DISCLAIMER:: This e-mail is confidential and intended for use by the addressee only. If you are not the intended recipient, please notify us immediately and delete this e-mail, as well as any attachment. ::DISCLAIMER:: This e-mail is confidential and intended for use by the addressee only. If you are not the intended recipient, please notify us immediately and delete this e-mail, as well as any attachment. -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html |
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Good day Martin,
you may have a look at this Forum-thread: <http://forum.imagej.net/t/measuring-wall-thickness-of-plastic-extruded-sample/9866> Regards Herbie :::::::::::::::::::::::::::::::::::::::::::::: Braekevelt Martin wrote > Hi all, > > > I would like to measure the diameter/radius to determine the circularity > of the wire cross-section. Each image contains only one cross-section. > I have tried this by the particle analysis in ImageJ but only find the > Feret diameter. Meaning is I want to have the measurements done thru the > center of mass/gravity and by a step I can define, for ex. every 10° or n > radians. > Is there a plugin available for doing this. > Thanks in advance for your help. > > Kindest regards, > Martin. > ImageJ mailing list: http://imagej.nih.gov/ij/list.html -- Sent from: http://imagej.1557.x6.nabble.com/ -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html |
Re: wire cross section diameter measurements.
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In reply to this post by Braekevelt Martin
Hi Martin,
Have you looked at the 'Set Measurement' options and ticked the shape descriptor option? That will include a circularity measurement for any selection in the results table. If you need to go through the centre of your selection and measure the diameter at various specific angles, this should be fairly straight forward with a small macro. If you could provide a sample image to illustrate what you try to achieve, that would be useful. Hope this helps, Volko ________________________________ From: Braekevelt Martin <[hidden email]> Sent: 18 July 2018 07:28:06 To: [hidden email] Subject: wire cross section diameter measurements. Hi all, I would like to measure the diameter/radius to determine the circularity of the wire cross-section. Each image contains only one cross-section. I have tried this by the particle analysis in ImageJ but only find the Feret diameter. Meaning is I want to have the measurements done thru the center of mass/gravity and by a step I can define, for ex. every 10° or n radians. Is there a plugin available for doing this. Thanks in advance for your help. Kindest regards, Martin. ::DISCLAIMER:: This e-mail is confidential and intended for use by the addressee only. If you are not the intended recipient, please notify us immediately and delete this e-mail, as well as any attachment. ::DISCLAIMER:: This e-mail is confidential and intended for use by the addressee only. If you are not the intended recipient, please notify us immediately and delete this e-mail, as well as any attachment. -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html |
Re: wire cross section diameter measurements.
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In reply to this post by Herbie
Thanks Herbie,
I did check it and also installed the polar plugin, but it seems not working, I get a vertical profile that doesn't match my wire profile, also I don't find the data to calculate the diameter, radius. Kindest regards, Martin. -----Original Message----- From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of Herbie Sent: Wednesday, July 18, 2018 8:49 AM To: [hidden email] Subject: Re: wire cross section diameter measurements. Good day Martin, you may have a look at this Forum-thread: <http://forum.imagej.net/t/measuring-wall-thickness-of-plastic-extruded-sample/9866> Regards Herbie :::::::::::::::::::::::::::::::::::::::::::::: Braekevelt Martin wrote > Hi all, > > > I would like to measure the diameter/radius to determine the > circularity of the wire cross-section. Each image contains only one cross-section. > I have tried this by the particle analysis in ImageJ but only find the > Feret diameter. Meaning is I want to have the measurements done thru > the center of mass/gravity and by a step I can define, for ex. every > 10° or n radians. > Is there a plugin available for doing this. > Thanks in advance for your help. > > Kindest regards, > Martin. > ImageJ mailing list: http://imagej.nih.gov/ij/list.html -- Sent from: http://imagej.1557.x6.nabble.com/ -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html |
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Martin,
please make sure you understand the polar-transformation. The vertical bar-like image gives you the diameter as a function of the bar height, i.e. the angle of your original image is mapped to the y-axis. Does this make sense for you? It would be helpful if you could post a typical raw image in the original TIF- or PNG-format. No JPG-format though, because JPG introduces artifacts! Regards Herbie ::::::::::::::::::::::::::::::::::::::::::::::: Braekevelt Martin wrote > Thanks Herbie, > > I did check it and also installed the polar plugin, but it seems not > working, I get a vertical profile that doesn't match my wire profile, also > I don't find the data to calculate the diameter, radius. > > Kindest regards, > Martin. > > -----Original Message----- > From: ImageJ Interest Group [mailto: > IMAGEJ@.NIH > ] On Behalf Of Herbie > Sent: Wednesday, July 18, 2018 8:49 AM > To: > IMAGEJ@.NIH > Subject: Re: wire cross section diameter measurements. > > Good day Martin, > > you may have a look at this Forum-thread: > <http://forum.imagej.net/t/measuring-wall-thickness-of-plastic-extruded-sample/9866> > > Regards > > Herbie > > :::::::::::::::::::::::::::::::::::::::::::::: > > Braekevelt Martin wrote >> Hi all, >> >> >> I would like to measure the diameter/radius to determine the >> circularity of the wire cross-section. Each image contains only one >> cross-section. >> I have tried this by the particle analysis in ImageJ but only find the >> Feret diameter. Meaning is I want to have the measurements done thru >> the center of mass/gravity and by a step I can define, for ex. every >> 10° or n radians. >> Is there a plugin available for doing this. >> Thanks in advance for your help. >> >> Kindest regards, >> Martin. >> ImageJ mailing list: http://imagej.nih.gov/ij/list.html > > > > > > -- > Sent from: http://imagej.1557.x6.nabble.com/ > > -- > ImageJ mailing list: http://imagej.nih.gov/ij/list.html > > -- > ImageJ mailing list: http://imagej.nih.gov/ij/list.html -- Sent from: http://imagej.1557.x6.nabble.com/ -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html |
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