KAIST team developed a technique that can correct a phone's orientation by tracking the rotation sensor in a phone. When people take document photos their smartphones become parallel to the documents on a flat surface. This intention of photographing documents can be easily recognizable because gravity falls onto the phone's surface. The current orientation can be tracked by monitoring the occurrence of significant rotation.
- International Journal of Human-Computer Studies
- Korean Government, National Research Foundation of Korea, Institute for Information &communications Technology Promotion