Re: ImageJ "mean" vs Photoshop "mean"?

Posted by GRADD CO on Nov 29, 2020; 12:49am
URL: http://imagej.273.s1.nabble.com/ImageJ-mean-vs-Photoshop-mean-tp5024242p5024245.html

Simple observation...for what it's worth...your ImageJ mean is nearly
exactly double that of your Photoshop mean.
REZA KARAMOOZ

CEO, GRADD
<https://mailtrack.io/trace/link/7ad9a122c52d274bf1f241c3c5053637b5231553?url=https%3A%2F%2Fgradd.co&userId=5893829&signature=510720a1f91ee2f4>
Civic Leader | USAF AMMOS
<https://mailtrack.io/trace/link/bc8e73ac6322511137801c139ea32ad005963ab1?url=https%3A%2F%2Fwww.nellis.af.mil%2FUnits%2F57-WG%2F&userId=5893829&signature=03184a6d9a9c4ed3>,
57th Wing, Nellis AFB
7028799100 | [hidden email]
2900 Meade Ave Ste 8
Las Vegas, NV 89102
<https://mailtrack.io/trace/link/8dd2a7f4740dd769a223a120bf2ad5e7adee8378?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Fgradd%2F&userId=5893829&signature=6a09150adafa35a0>
  Click to schedule a meeting
<https://mailtrack.io/trace/link/449bd34691b16bdf68f2ab55ac5132dae98ac667?url=https%3A%2F%2Fgradd.as.me%2Fschedule.php&userId=5893829&signature=d562ff6e29b072ff>

CONFIDENTIAL COMMUNICATION: This email message and any attachment may
contain privileged and confidential information intended only for the use
of the individual or entity to which the email is addressed. If the reader
of this message is not the intended recipient or the employee or agent
responsible to deliver it to the intended recipient, that person is hereby
notified that any dissemination, distribution or copying of this
communication is prohibited.


On Sat, Nov 28, 2020 at 4:39 PM G. Esteban Fernandez <
[hidden email]> wrote:

> I’m running an old version of Photoshop (CS2) and it reports the same. Must
> be some difference in your workflows. Please post an example image and also
> your workflow for each program.
>
> -Esteban
>
>
> On Sat, Nov 28, 2020 at 12:35 PM Saalfeld, Stephan <
> [hidden email]> wrote:
>
> > Post the patch?
> >
> > On Sat, 2020-11-28 at 13:26 -0500, David Palermo wrote:
> > > I am using my scanner as a densitometer and I am measuring gray
> > > patches from a step-wedge in both Photoshop and ImageJ. The mean
> > > values are different between each program. Why is that? ImageJ's mean
> > > is 41726 and Photoshop's mean of the same patch from the same file is
> > > 20861.
> > >
> > > Thank you!
> > >
> > > David
> > >
> > > --
> > > ImageJ mailing list:
> > >
> >
> https://urldefense.com/v3/__http://imagej.nih.gov/ij/list.html__;!!Eh6p8Q!WiX2hdhTXaPkbqQs1B-O_cXIg7VI21Kut7X8jLZUGNtEbBwU9kFUZOB_vu1vx83uPgu1$
> <https://mailtrack.io/trace/link/04b6912e0be97160f39cc1ecc5d99a311d22de36?url=https%3A%2F%2Furldefense.com%2Fv3%2F__http%3A%2F%2Fimagej.nih.gov%2Fij%2Flist.html__%3B!!Eh6p8Q!WiX2hdhTXaPkbqQs1B-O_cXIg7VI21Kut7X8jLZUGNtEbBwU9kFUZOB_vu1vx83uPgu1%24&userId=5893829&signature=3f2493d71e8ba57f>
> > >
> >
> >
> > --
> > ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> <https://mailtrack.io/trace/link/9842e3cf9460dc8bbbd6a223188cf379826229e6?url=http%3A%2F%2Fimagej.nih.gov%2Fij%2Flist.html&userId=5893829&signature=ec770f6ef2ac1ec5>
> >
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> <https://mailtrack.io/trace/link/672b393203ec982ee518b42d8a91e1bf9355ce6f?url=http%3A%2F%2Fimagej.nih.gov%2Fij%2Flist.html&userId=5893829&signature=02b5eed4ee4c63dd>
>

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html