I am trying to write up an automatic 360° panorama stitching program for my final project, in order to do so, I need to accomplish four steps:
Find the horizontal and vertical field of view for a camera, and use that camera to take pictures. Later these pictures will be stitched together to make a 360° panorama.
Using FOV to find the cylindrical projection from image coordinate to cylindrical coordinate.
Using feature detection to find features and then using the feature coordinates to find the translational relationship between every two pictures.
Composite the images using the translation.
Right now I am trying to bypass the first step, which is just calibration work. I want to focus on the math and start with images with known field of view and can be successfully turned into a panorama. Where can I find those pictures? There are so many panoramas online, but nobody is displaying the intermediate picture and their camera calibration.