What is Visual Positioning System(VPS)
A Visual Positioning System (VPS) is a technology that uses computer vision to determine the location and orientation of a device in physical space. It is often used in applications where precise positioning is required, such as augmented reality (AR), robotics, and self-driving vehicles.
VPS works by comparing the images captured by a device’s cameras to a previously generated map of the environment. The map is typically created using high-resolution images and/or laser scans of the environment and includes information about the locations and shapes of objects in the environment.
To determine its position and orientation, the device compares the images it captures to the map and uses algorithms to determine the best match. The device can then use this information to update its position and orientation in real time.
VPS has several advantages over traditional positioning systems such as GPS. For example, it can work indoors or in urban environments where GPS signals may be weak or unavailable. It is also more accurate than GPS in many cases, as it can take into account the shape and location of objects in the environment.
Overall, VPS is a powerful technology that has the potential to revolutionize a wide range of applications, from AR and robotics to self-driving vehicles and beyond.
Advantages of VPS
There are several advantages to using a Visual Positioning System (VPS) over other positioning technologies such as GPS:
- High accuracy: VPS can be more accurate than GPS in many cases, as it can take into account the shape and location of objects in the environment. This allows it to more accurately determine the position and orientation of a device.
- Indoor and urban use: VPS can work indoors or in urban environments where GPS signals may be weak or unavailable. This makes it a useful technology for applications such as augmented reality, robotics, and self-driving vehicles that need to operate in these types of environments.
- Real-time updates: VPS can provide real-time updates to the position and orientation of a device, allowing for more accurate and responsive navigation.
Comparing VPS and GPS
- Infrastructure requirements: VPS requires a previously generated map of the environment, which must be created using high-resolution images and/or laser scans. This can be time-consuming and resource-intensive.
- Limited global coverage: VPS is currently not as widely available as GPS, as it requires a map of the environment to function. This means that it may not be suitable for use in certain locations where such a map does not exist.
Advantages of GPS over VPS:
- Global coverage: GPS is available almost anywhere in the world, making it a useful technology for navigation and positioning in a wide range of locations.
- Low infrastructure requirements: GPS does not require a map of the environment, as it relies on satellite signals to determine position.
- Low cost: GPS technology is relatively cheap and widely available, making it an attractive option for many applications.
Drawbacks of GPS:
- Limited accuracy: GPS can be less accurate than VPS in certain environments, such as urban areas or indoors.
- Dependence on satellite signals: GPS can be disrupted or unavailable in certain locations, such as in deep canyons or underground, where satellite signals are weak or blocked.