![]() ![]() You might have seen “stitch lines” where control points haven’t worked as intended. The better the overlap, the smoother the join. Lighting, movement, timing and a whole host of other things (even if the fields of view lined up perfectly) make this a more complex task.Ĭontrol points are points (or regions) of two images that refer to the same point in space and are used to stitch images.īy including an overlap in each photo for each period of time, you can use these control points to create a smooth transition (stitch) between the photos. Imagine you have 6 photos taken by a 360 camera.Ĭreating a 360 projection is not as simple as putting the images side by side. Control pointsĬontrol points are the reason image overlap important. For outdoor imagery, this is not such an issue. Generally speaking, a high overlap is really only required when shooting in enclosed places (especially indoor tours). ![]() The Open Path View cameras have roughly a 20% overlap.īased on my experience, it seems for two consecutive photos to stitch easily and automatically, they must present an overlap surface of at least 15% with 20% - 30% being ideal. Simply put, the sensors (each GoPro) are catching parts of the same image (there is an overlap). Looking at horizontal field of view there is an overlap between the images taken on the Open Path VIew camera (170 * 5 = 850 degrees). I could not find data for the vertical field of view, but would estimate it being somewhere between 50 - 70 degrees. The Hero 2 cameras offer a 170 degree horizontal field of view. They’ve open-sourced all their work, including the 3D printed parts for the camera housing. The team at Open Path View built their own 360 camera using 6 GoPro Hero 2 cameras (5 facing outward, 1 upwards). Unfortunately all of this software is proprietary, but the general workflows to process images into 360 projections are all very similar. If you’re anything like me, you will have pondered how this process actually works.Īs I mentioned a few weeks ago, software is often where many manufacturers are competing, and there are some very good stitching tools that have been developed by manufacturers. On the GoPro MAX cameras we use for the Trek Pack v2 this stitching is done on the camera for photos and using the GoPro MAX Exporter software for videos. ![]() This is either done on the camera, or done using software on your computer.įor example, to stitch photos from GoPro Fusion cameras on our Trek Pack v1 we use a piece of software called GoPro Fusion Studio. Most 360 cameras have stitching software to turn the photos it has taken into panoramas. An ELI5 description of how software takes 2 or more photos to create a 360 image. ![]()
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