Abstract
We present a context-aware system that simultaneously increases energy-efficiency and readability for educational videos on smartphones with OLED displays. Our system analyzes the content of each frame of the video and intelligently modifies the colors and presentations of specific regions of the frame to drastically reduce display energy consumption while retaining relevant content of the lecture video. We achieve this by leveraging the mapping between frames and electronic versions of slides used in the lecture. This enables separate manipulation of the slide area and the background. Further, since the slides can themselves be analyzed for content (e.g. text and images within) this approach provides substantive control over energy use and user experience. We evaluate the system using extensive energy measurements performed on phones using two different display technologies. Our method was able to reduce energy usage up to 59.2 % of the energy used by the display which amounts to 27 % of the total energy used by the device.
| Original language | English (US) |
|---|---|
| Title of host publication | Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST |
| Publisher | Springer Verlag |
| Pages | 396-408 |
| Number of pages | 13 |
| Volume | 131 |
| ISBN (Print) | 9783319115689 |
| DOIs | |
| State | Published - 2014 |
| Event | 10th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, MOBIQUITOUS 2013 - Tokyo, Japan Duration: Dec 2 2013 → Dec 4 2013 |
Publication series
| Name | Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST |
|---|---|
| Volume | 131 |
| ISSN (Print) | 18678211 |
Other
| Other | 10th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, MOBIQUITOUS 2013 |
|---|---|
| Country | Japan |
| City | Tokyo |
| Period | 12/2/13 → 12/4/13 |
Fingerprint
Keywords
- Energy-efficiency
- Lecture videos
- OLED
- Smartphones
ASJC Scopus subject areas
- Computer Networks and Communications
Cite this
MobiSLIC : Content-aware energy saving for educational videos on mobile devices. / Tung, Qiyam; Korp, Maximiliano; Gniady, Christopher; Efrat, Alon; Barnard, Jacobus J.
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST. Vol. 131 Springer Verlag, 2014. p. 396-408 (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST; Vol. 131).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - MobiSLIC
T2 - Content-aware energy saving for educational videos on mobile devices
AU - Tung, Qiyam
AU - Korp, Maximiliano
AU - Gniady, Christopher
AU - Efrat, Alon
AU - Barnard, Jacobus J
PY - 2014
Y1 - 2014
N2 - We present a context-aware system that simultaneously increases energy-efficiency and readability for educational videos on smartphones with OLED displays. Our system analyzes the content of each frame of the video and intelligently modifies the colors and presentations of specific regions of the frame to drastically reduce display energy consumption while retaining relevant content of the lecture video. We achieve this by leveraging the mapping between frames and electronic versions of slides used in the lecture. This enables separate manipulation of the slide area and the background. Further, since the slides can themselves be analyzed for content (e.g. text and images within) this approach provides substantive control over energy use and user experience. We evaluate the system using extensive energy measurements performed on phones using two different display technologies. Our method was able to reduce energy usage up to 59.2 % of the energy used by the display which amounts to 27 % of the total energy used by the device.
AB - We present a context-aware system that simultaneously increases energy-efficiency and readability for educational videos on smartphones with OLED displays. Our system analyzes the content of each frame of the video and intelligently modifies the colors and presentations of specific regions of the frame to drastically reduce display energy consumption while retaining relevant content of the lecture video. We achieve this by leveraging the mapping between frames and electronic versions of slides used in the lecture. This enables separate manipulation of the slide area and the background. Further, since the slides can themselves be analyzed for content (e.g. text and images within) this approach provides substantive control over energy use and user experience. We evaluate the system using extensive energy measurements performed on phones using two different display technologies. Our method was able to reduce energy usage up to 59.2 % of the energy used by the display which amounts to 27 % of the total energy used by the device.
KW - Energy-efficiency
KW - Lecture videos
KW - OLED
KW - Smartphones
UR - http://www.scopus.com/inward/record.url?scp=84910626964&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84910626964&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-11569-6_31
DO - 10.1007/978-3-319-11569-6_31
M3 - Conference contribution
AN - SCOPUS:84910626964
SN - 9783319115689
VL - 131
T3 - Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
SP - 396
EP - 408
BT - Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
PB - Springer Verlag
ER -