Re: Are Pixel Level Crops Possible with ImageJ?

Posted by KenO on
URL: http://imagej.273.s1.nabble.com/Are-Pixel-Level-Crops-Possible-with-ImageJ-tp5012121p5012271.html

Hi Theresa,

Reason for late response is I had a number of projects to complete.

Thanks for the tip!  "Put the cursor where you want to zoom. Press the + key repeatedly to reach the desired zoom level. Maximum zoom is 3200%"

As an ImageJ beginner I have tried to read the user guide and man but found no mention which is why I posted.  Any recommendations concerning tutorials...  

Would like to use ImageJ on different Windows PCs without installing so  a portable ImageJ is what I would like to download.

Googled using "imagej portable windows" and found "Downloads - Fiji fiji.sc/Downloads Fiji Dec 22, 2014 - ImageJ will run on any system that has a Java 6 (or later) runtime installed. ... Windows XP, Vista, 7 or 8 with Java installed from java.com; Mac OS X 10.5 "Leopard" ... ImageJ and Fiji are distributed as portable applications."

Do not know the difference between ImageJ and Fiji so went to Fiji (software) wiki  http://en.wikipedia.org/wiki/Fiji_%28software%29  and read "One of Fiji's principal aims is to make the installation of ImageJ, Java, Java 3D, the plugins, and further convenient components, as easy as possible. As a consequence, Fiji enjoys more and more active users."

As beginner this seems good to me, problem is the Windows PCs I use do not have Java 6 (or later) runtime installed.

Is there a version that has everything needed in a portable Windows app?

Thanks again for your help!

Ken





________________________________
From: "Swayne, Theresa C. [via ImageJ]" <[hidden email]>
To: KenO <[hidden email]>
Sent: Monday, March 23, 2015 4:01 PM
Subject: Re: Are Pixel Level Crops Possible with ImageJ?



Hi Ken,

Yes, you can do this.

Put the cursor where you want to zoom.
Press the + key repeatedly to reach the desired zoom level. Maximum zoom is 3200% -- more than enough to see pixels.
Make a rectangular ROI.  Use the - (minus) key to zoom out as needed and adjust the corners.
Image > Crop to complete the cropping.

Hope this helps,
Theresa

On Mar 23, 2015, at 3:17 PM, KenO <[hidden email]<mailto:[hidden email]>> wrote:

Have some ~ 40 MP JPEGs that I want to be able to zoom  right in, eg >400%,
until I can clearly see individual pixels, and then set a crop line.

Is this possible with ImageJ?

If yes would appreciate suggestions.

Thanks

Ken



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Please note:  My email address has changed to [hidden email]<mailto:[hidden email]>.

Theresa Swayne, Ph.D.
Manager
Confocal and Specialized Microscopy Shared Resource<http://hiccc.columbia.edu/research/sharedresources/confocal>

Herbert Irving Comprehensive Cancer Center
Columbia University Medical Center
1130 St. Nicholas Ave., Room 222A
New York, NY 10032
Phone: 212-851-4613


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