Phase messaging method for time-of-flight cameras
Ubiquitous light emitting devices and low-cost commercial digital cameras facilitate optical wireless communication system such as visual MIMO where handheld cameras communicate with electronic displays. While intensity-based optical communications are more prevalent in camera-display messaging, we...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Electrical and Electronics Engineers (IEEE)
2015
|
| Online Access: | http://hdl.handle.net/1721.1/92841 https://orcid.org/0000-0002-3254-3224 |
| _version_ | 1826202104175263744 |
|---|---|
| author | Yuan, Wenjia Howard, Richard E. Dana, Kristin J. Raskar, Ramesh Ashok, Ashwin Gruteser, Marco Mandayam, Narayan |
| author2 | Massachusetts Institute of Technology. Media Laboratory |
| author_facet | Massachusetts Institute of Technology. Media Laboratory Yuan, Wenjia Howard, Richard E. Dana, Kristin J. Raskar, Ramesh Ashok, Ashwin Gruteser, Marco Mandayam, Narayan |
| author_sort | Yuan, Wenjia |
| collection | MIT |
| description | Ubiquitous light emitting devices and low-cost commercial digital cameras facilitate optical wireless communication system such as visual MIMO where handheld cameras communicate with electronic displays. While intensity-based optical communications are more prevalent in camera-display messaging, we present a novel method that uses modulated light phase for messaging and time-of-flight (ToF) cameras for receivers. With intensity-based methods, light signals can be degraded by reflections and ambient illumination. By comparison, communication using ToF cameras is more robust against challenging lighting conditions. Additionally, the concept of phase messaging can be combined with intensity messaging for a significant data rate advantage. In this work, we design and construct a phase messaging array (PMA), which is the first of its kind, to communicate to a ToF depth camera by manipulating the phase of the depth camera's infrared light signal. The array enables message variation spatially using a plane of infrared light emitting diodes and temporally by varying the induced phase shift. In this manner, the phase messaging array acts as the transmitter by electronically controlling the light signal phase. The ToF camera acts as the receiver by observing and recording a time-varying depth. We show a complete implementation of a 3×3 prototype array with custom hardware and demonstrating average bit accuracy as high as 97.8%. The prototype data rate with this approach is 1 Kbps that can be extended to approximately 10 Mbps. |
| first_indexed | 2024-09-23T12:01:56Z |
| format | Article |
| id | mit-1721.1/92841 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:01:56Z |
| publishDate | 2015 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/928412022-09-27T23:39:05Z Phase messaging method for time-of-flight cameras Yuan, Wenjia Howard, Richard E. Dana, Kristin J. Raskar, Ramesh Ashok, Ashwin Gruteser, Marco Mandayam, Narayan Massachusetts Institute of Technology. Media Laboratory Program in Media Arts and Sciences (Massachusetts Institute of Technology) Raskar, Ramesh Ubiquitous light emitting devices and low-cost commercial digital cameras facilitate optical wireless communication system such as visual MIMO where handheld cameras communicate with electronic displays. While intensity-based optical communications are more prevalent in camera-display messaging, we present a novel method that uses modulated light phase for messaging and time-of-flight (ToF) cameras for receivers. With intensity-based methods, light signals can be degraded by reflections and ambient illumination. By comparison, communication using ToF cameras is more robust against challenging lighting conditions. Additionally, the concept of phase messaging can be combined with intensity messaging for a significant data rate advantage. In this work, we design and construct a phase messaging array (PMA), which is the first of its kind, to communicate to a ToF depth camera by manipulating the phase of the depth camera's infrared light signal. The array enables message variation spatially using a plane of infrared light emitting diodes and temporally by varying the induced phase shift. In this manner, the phase messaging array acts as the transmitter by electronically controlling the light signal phase. The ToF camera acts as the receiver by observing and recording a time-varying depth. We show a complete implementation of a 3×3 prototype array with custom hardware and demonstrating average bit accuracy as high as 97.8%. The prototype data rate with this approach is 1 Kbps that can be extended to approximately 10 Mbps. National Science Foundation (U.S.) (grant CNS-106546#) 2015-01-13T21:07:37Z 2015-01-13T21:07:37Z 2014-05 Article http://purl.org/eprint/type/ConferencePaper 978-1-4799-5188-8 INSPEC Accession Number: 14383061 http://hdl.handle.net/1721.1/92841 Yuan, Wenjia, Richard E. Howard, Kristin J. Dana, Ramesh Raskar, Ashwin Ashok, Marco Gruteser, and Narayan Mandayam. “Phase Messaging Method for Time-of-Flight Cameras.” 2014 IEEE International Conference on Computational Photography (ICCP) (May 2014). https://orcid.org/0000-0002-3254-3224 en_US http://dx.doi.org/10.1109/ICCPHOT.2014.6831812 2014 IEEE International Conference on Computational Photography (ICCP) Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Institute of Electrical and Electronics Engineers (IEEE) Other univ. web domain |
| spellingShingle | Yuan, Wenjia Howard, Richard E. Dana, Kristin J. Raskar, Ramesh Ashok, Ashwin Gruteser, Marco Mandayam, Narayan Phase messaging method for time-of-flight cameras |
| title | Phase messaging method for time-of-flight cameras |
| title_full | Phase messaging method for time-of-flight cameras |
| title_fullStr | Phase messaging method for time-of-flight cameras |
| title_full_unstemmed | Phase messaging method for time-of-flight cameras |
| title_short | Phase messaging method for time-of-flight cameras |
| title_sort | phase messaging method for time of flight cameras |
| url | http://hdl.handle.net/1721.1/92841 https://orcid.org/0000-0002-3254-3224 |
| work_keys_str_mv | AT yuanwenjia phasemessagingmethodfortimeofflightcameras AT howardricharde phasemessagingmethodfortimeofflightcameras AT danakristinj phasemessagingmethodfortimeofflightcameras AT raskarramesh phasemessagingmethodfortimeofflightcameras AT ashokashwin phasemessagingmethodfortimeofflightcameras AT grutesermarco phasemessagingmethodfortimeofflightcameras AT mandayamnarayan phasemessagingmethodfortimeofflightcameras |