{"id":148,"date":"2012-05-10T16:19:19","date_gmt":"2012-05-10T03:19:19","guid":{"rendered":"https:\/\/blogs.otago.ac.nz\/si-geology\/?p=148"},"modified":"2012-05-10T16:19:19","modified_gmt":"2012-05-10T03:19:19","slug":"aligning-multiple-images-in-photoshop","status":"publish","type":"post","link":"https:\/\/blogs.otago.ac.nz\/si-geology\/aligning-multiple-images-in-photoshop\/","title":{"rendered":"Aligning multiple images in photoshop"},"content":{"rendered":"

We want images stacked<\/h3>\n

Sometimes we capture images of the same area (e.g. a particular part of a thin section) using different conditions (reflected light, PPL, XPL, Cathodoluminescence) . We may then want to stack the images together so that we can see how each different mineral, for instance, appears under the different conditions.<\/p>\n

THE PROBLEM<\/h3>\n

We can align objects manually because we see\u00a0recognisable\u00a0features in each image. It can be a little tedious and difficult trying to add, manually align, resize and rotate the images in software like: Adobe Illustrator, photoshop, the gimp, image j or other software.<\/p>\n

There is a semi-automated way to speed up this process in photoshop. I’m not sure of the exact conditions under which this will actually work. But it’s fairly easy to try and could save you a load of time.<\/p>\n

How to do it<\/h3>\n

The first thing we need to do is to load all the images as layers in a photoshop document.<\/p>\n