I wonder how many implementations there were of that sort of thing. I wrote one for an HP flatbed plotter sometime in the 80s to digitize plots from papers, but I never heard of another. I don't remember the implementation, but it must have been cheaper hardware than the one shown, and only had a plastic lens as the sight. (Nowadays you have http://markummitchell.github.io/engauge-digitizer for instance.) I... - Source: Hacker News / about 3 years ago

Nice, I've used Engauge Digitizer in the past http://markummitchell.github.io/engauge-digitizer/. - Source: Hacker News / over 3 years ago

Through the use of a public domain program (ImageJ), I was able to extract different information from the image. Source: almost 2 years ago

All my users get ImageJ[https://imagej.nih.gov/ij/]. Depending on needs, they can also get OsiriX, microdicom, or training on pydicom or matlab libraries. Source: almost 2 years ago

The tool in question is called ImageJ. It's an open source piece of image analysis software, commonly used in biology for processing microscope images. It can do stuff like hyperstacks -- more than two dimensions, such as x,y, z (a microscope that scan vertically), t (time), c (multiple color channels). Source: about 2 years ago

I used an open source program called ImageJ that lets you measure things is a bunch of different ways. I took one measurement as a reference then used the program to figure out everything else. Source: almost 3 years ago