ImageJ is a Java app that was developed by the National Institute of Health (the project developer was Wayne Rasband) to perform image processing. You can download the application from its location on the NIH Website.
After installing it n my laptop at NNU, I just click the ij executable file to get ImageJ's simple to use menu to pop up.
|That's right, the ImageJ window is pretty small. Just a simple menu, really.|
It just took six total clicks to split a color image into its three channels. First, I had to open the image with File, Open, and then click on the image I wanted. After opening the image, I then used 3 more clicks to split the color image into its three RGB channels. I clicked on Image, Color, and Split Channels. The original color disappeared and was replaced with three images, one for each color.
|I like that ImageJ automatically gives each image window a name that includes its color layer.|
|The Paste Control Application showing some of its paste options in a pull down menu.|
|The red color was on the left, but it's been converted in the red layer minus the green layer with just a few clicks.|
|The Threshold application pops up in its default setting. Notice the modified red layer is displayed in the current threshold value.|
After applying a threshold and segmenting a layer, you can detect the edges of the image by clicking Process and then Find Edges.
|These are the edges of the segmented layer displayed above.|
|A three color image of the edges detected in the original color image. I don't know if this is particularly useful, but it is pretty cool looking.|