Hot answers tagged distortion
Pradeep Sekar was in the right direction but is probably using an old version of Photoshop. Using Photoshop CC, here comes a step-by-step solution : Open your sphere image in Photoshop. Here an image from http://photography.tutsplus.com/articles/using-polar-coordinates-to-turn-landscapes-into-planets-and-more--photo-9998 as example : Go to Filter > ...
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