FAQ

A single panorama is great and allows the viewer to swipe up, down, left, and right to see all around the space from one particular point. They are made from what are called equirectangular flat images. Think of a globe being flattened out to make a flat map of the world. Using cameras that take multiple images and software that stitches them together and creates a way to view it in 360, you really get the feeling of being in the space. Viewing them VR mode with a VR headset or something like Google Cardboard makes this experience even more immersive. Labels and call-outs can also be added to these images to highlight specific features.

Many virtual tour providers create tours by linking multiple panoramas together using “hot-spots”. These are visual cues that are also clickable links which show you the next image. Think of an image that includes a doorway. If the doorway included an arrow labeled “Bedroom” and you clicked it, the panorama taken from inside the bedroom would appear, and you would now be positioned inside the bedroom and looking around from there. These tours are effective and sometimes the hotspot labels really assist in the understanding of where you are at the time. Sometimes however, these point-to-point tours give the feeling of “tele-porting” to the next area without the proper context and viewers can get disoriented to where they are. Including a floorpan of the entire space showing the positions of the hotspots can help, but if your viewer feels lost they may loose interest quickly. When made carefully, they can work well and are especially good at showing exterior areas.

A true 3-D walkthrough experience requires a bit more. The 360 panoramas are connected to a 3-d wireframe model of the space. Think of the early video games where the environment looked like a simple line drawing in which you could move around. The software matches up the panorama images to the surfaces in the 3-d model and creates a smooth transition from one viewing position to the next. This smoother transition solves the tele-porting effect. The 3-d models can be generated from infra-red scans, Lidar, the panorama images themselves, or even drawn manually. Having a 3-D model attached to the panoramas allows the software to generate a floorpan as well as the dollhouse effect that many people find valuable. These tours are great at showing interior areas but exterior views can be a challenge and require a bit of creativity, sometimes linking to other panoramas or tours that are separate from the 3-d model.