Automatic Scene Connection Feature
How to use Automatic Scene Connection?
Note: Panoramas and scenes are used interchangeably in the article
About YouVR Automatic Scene Connection Technology
YouVR Automatic Scene Connection (ASC) uses Advanced Computer Vision for estimating three-dimensional structures from a two-dimensional image to detect common feature points among panoramas.
After detecting the common feature points successfully, each panorama is mapped directly onto a 3D model and its relative position is distinguished base on the 3D model. As a result, a connection between the panoramas or scenes can be established successfully.
When creating a VR tour, ASC allows VR tour creators to save time figuring out the sequence and position of the panoramas and manually connect them. This is especially helpful when the VR tour is big and making it requires many panoramas. ASC also creates a more immersive walk-through experience for the VR tour viewers.
Best practices when taking panoramas for automatic scene connection feature
It is extremely important for anyone who wants to use ASC to follow some guidelines when capturing panoramas inside a property or outdoor. There must be sufficient common feature points between the connecting panoramas and the panoramas should be captured consistently at the same height.
An example of common feature points between two connecting panoramas.
Failure to do so will cause the panoramas to be inappropriately connected and the VR tour to be incomplete when using the ASC feature.
What are common feature points?
Common feature points are unique and easily distinguishable features, it can be a hanging light inside a house, a pillar or a piece of antique furniture inside the house.
Preparing the place
It is highly recommended that the interior of a property is fully fitted and furnished. A fully fitted and furnished house will likely produce more common feature points in panoramas.
If the interior is plain and unfurnished, we recommend that you decorate the house simply with items such as chairs, flower vase, paintings or other small furniture.
Try to capture the panoramas during the day time. Draw the curtains open and put all the lights on.
Place portable lights in poorly lighted areas such as the basement and attic.
Using the camera
We recommend using 360-degree cameras by Ricoh Theta, Samsung Gear 360 and Insta 360 to capture the panoramas.
Use a tripod or monopod when capturing panoramas with 360-degree camera.
When using a tripod or monopod, ensure that the panoramas are captured between 3.5 feet to 5 feet consistently.
When capturing panoramas, there are four important rules for the result of the automatic scene connection to be accurate and good.
Capture one panorama (360 image) every 6.5 feet to 9.5 feet apart.
For example, if a room is 33 feet by 33 feet long, you will need at least 16 panoramas.
For interiors with few common feature points, we recommend capturing one panorama every 3.5 feet to 6.5 feet apart.
When capturing panoramas, ensure that the line of sight between each panorama is unblocked.
For every doorway, capture one panorama approximately 3.5 feet to 6.5 feet before the doorway, one panorama under the doorway and one panorama approximately 3.5 feet to 6.5 feet after the doorway.
Avoid taking panoramas too near to the walls or furniture. Also avoid taking panoramas at the corners of the room.
Taking into consideration of the 4 rules mentioned above, below is an example of how to move around and capture panoramas in an apartment:
Generating VR tour
After capturing all the panoramas required to create a VR tour, download the panoramas from your 360-degree camera to your computer. Sign in to your YouVR account and upload the panoramas to YouVR server by creating a new tour.
Once you have created a new tour and uploaded the panoramas, click on the Tour Settings icon at the top right hand corner as illustrated below:
Under the Creator Type, select the “Pro” option and click Save.
Finally when you arrive at the Pro-creator interface, click on “Auto Tour Beta” at the top right corner to start generating the VR tour.
An email will be sent to you once the VR tour is generated.
Do check the result of the VR tour generation and make adjustment when necessary.
How to run Automatic Scene Connection on Tour Creator?
How to use Automatic Scene Connection with 360 Video?
What is Automatic Scene Connection (ASC) with 360 Video feature?
Automatic Scene Connection (ASC) with 360 Video is an improved technology of Automatic Scene Connection.
Instead of capturing panoramas every 2-3 meters to identify the common feature points between two 360 images, we have decided to release a feature that allows users to upload a 360 video instead.
What does it mean?
With the new ASC with 360 video feature, users are only required to capture panoramas at the desired locations, for example, one panorama per room in an apartment. However a 360 video is required to supplement for the lack of panoramas to identify common feature points for ASC.
How to capture a 360 video?
An example of the locations where panoramas were captured in an apartment. Simply follow the same path to capture 360 video.
After capturing panoramas at the desired locations in an apartment (see the image above), use the same 360-degree camera and capture a video by walking over the same path that was taken to capture the panoramas.
When capturing the 360 video, either hold the tripod with 360-degree camera or just the 360-degree camera above your head as illustrated below.
When you have finished capturing the 360 video, export the video from your 360-degree camera to your desktop.
Log in to your YouVR account and access the Pro-creator. After you clicked on the "Auto Tour Beta" icon at the top right corner of the Pro-Creator, you will be promoted to upload your 360 video as shown below:
Upload the 360 video and click upload to use the Automatic Scene Connection with 360 video feature.