Re: Help?

Posted by Melissa Krueger on Jun 14, 2016; 6:39pm
URL: http://imagej.273.s1.nabble.com/Help-tp5016640p5016643.html

On Jun 14, 2016, at 09:10 , Charles Davis <[hidden email]> wrote:

>
> I'm using a Nikon D810 camera which produces large files. I need a .csv or
> .txt file w/ the brightness values. I don't want a Histogram, but the data
> behind the Histogram.


I assume that you are starting with a Nikon RAW file (.nef). What you need to use is the DCRAW plugin <https://sourceforge.net/projects/ij-plugins/files/ij-dcraw/> that I think is automatically installed with Fiji. Run the plugin either from the menu Plugins->Input-Output->DCRAW or from the Command Finder. Make sure the following two options are checked: a) Do not automatically brighten and b) Document mode without scaling. Also make the Read As popup say 16-bit linear. This should read the raw sensor data in without changing the grayscale values.

> Sorry for the long intro, getting to my question: How do I recreate another
> of those Measurements.txt files, w/ only gray brightness data in cells and
> in a 2D array?
>

From the menu, click File->Save As->Text Image... You will end up with a tab-delimited file with the grayscale values.

Melissa

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